Summarize the following court judgment. Nos. 1694 and 1730 of 1968. Appeals from the judgment and order dated August 11	 1967 of the Calcutta High Court in Income tax Reference Nos. 106 and 215 of 1963. section R. Banerjee	 N. N. Goswamy and section N. Mukherjee	 for the appellant (in both the appeals). V. section Desai	 R. N. Sachthry and B. D. Sharma	 for the respondent (in both the appeals). A. K. Sen	 T. A. Ramachandran and D. N. Gupta	 for the intervener (in both the appeals). The Judgment of the Court was delivered by Sikri C.J. Beg J. gave a concurring but a separate opinion. These appeals have been referred by a Division Bench of this Court 'to a larger Bench as the Division Bench felt :that the decision of this Court in Travancore Titanium Product 	Ltd. vs Commissioner of Income Tax(1) might require reconsideration. The only point involved in these appeals is whether the Wealth Tax paid by the assesse	 a 'trading company is deductible as an expenditure under section 10 ( 1 ) and section 10 (2) (xv) of the Income tax Act	 1922. The facts in both the appeals are similar. They relate to two separate accounting and assessment years and two assessment orders have been challenged. We may give a few facts in one appeal The Indian Aluminium Co. Ltd.	 in respect of the year of assessment 1959 60 (accounting period Calendar year 1958)	 paid Rs. 1	59(630/ as Wealth Tax and	 claimed to deduct this amount as expense from their assessable income. Income Tax Officer allowed the deduction but the Appellate Assistant Commissioner held that the Company was not entitled to the deduction of Wealth Tax as an expense. The Appellate Tribunal upheld the order of the Appellate Assistant Commissioner. On the application of the assessee	 the following question was referred to the High Court : "Whether on the facts and circumstances of case the sum of Rs. 1	59	630/ paid by the assessee as wealth tax legally deductible as a business expense in computing the assessee 's income from business?" The High Court	 following the decision of this Court in Travancore Titanium case(1)	 answered the question against the assessee. Having obtained certificate of fitness from the High Court	 the assessee has appealed to us. Basing himself on Keshav Mills Co. Ltd. vs C.I.T.(2) it was contended by the learned counsel for the Revenue that we should not review our decision in Travancore Titanium case(1). Gajendragadkar	 C.J.	 speaking	 for the Court	 had observed in that 'case that "it is not possible or desirable	 and in any case it would be inexpedient to lay down any principles which should govern the approach of the Court in dealing with the question of reviewing and revising its earlier decisions. " He further observed "It would always depend upon several relevant considerations : What is the nature of the infirmity or error on which a plea for a review and revision of the earlier view is based ? On the earlier occasion	 did some patent aspects of the question remain unnoticed	 was the attention of the Court not drawn to any relevant and material statutory provision	 or was any previous decision of this Court bearing on the point not noticed ? Is the Court hearing such plea fairly unani mous that there is such an error in the	 earlier view ? What would be the impact of the error 'on the general administration of law or on public good ? Has the earlier decision been followed on subsequent occasions either by this Court or by the High courts ? And	 would the reversal of the earlier decision lead to public inconvenience	 hardship or mischief ?" (1) ; (2) 20 We are inclined to review our earlier decision 'in Travancore Titanium case(	 ')	 because	 as will presently appear	 certain aspects of the question were not brought to the attention of the Court and remained unnoticed	 and our decision is not likely to cause any public inconvenience	 hardship or mischief. We are all of the opinion that the decision was erroneous. The decision will affect numerous assessees. In the circumstances we think we should review the decision. Section 10 (1) of the Indian Income tax Act	 1922	 reads: "10(1) The tax shall be payable by an assessee under the he	 id profits and gains of business	 profession or vocation in respect of the profit or gains of any business	 profession or vocation carried on by him." Section 10(2) provides : "Such profits or gains shall be computed after making the following allowances	 namely	. " (xv) any expenditure not being an allowance of the nature described in any of the clauses (i) to (xiv) inclusive and not being	 in the nature of capital expenditure or personal expenses of the assessee laid out or expended wholly and exclusively for the purpose of such business	 profession or vocation. " The language seems to be simple enough but it has engendered judicial conflict not only in India but also in England Eminent Judges halve striven to formulate correct tests to determine whether an expenditure has been laid out or expended wholly and exclusively for the purposes of business or not	 but no one has been able to find a test in the application of which differences of opinion do not arise. It seems to us therefore essential that in each case	 the Courts must always keep in mind language of the section. One of the tests which have been laid down and applied by some of the Judges in England is whether the expenditure has been made in the capacity of a trader or an owner. One of the earliest cases in which this test was suggested was Strong and Company of Romsey Ltd. vs Woodfield(2). In that case the Brewing Company	 which also owned licensed houses in which they carried on the business of lnnkeepers	 incurred damages and costs on account of injustice caused to a visitor staying at one of their houses by the falling in of a chimney. The House	 of Lords (1) [1066] 3 S.C.R. 321 (2) ; 21 held that the damages and costs were not allowable as a deduction in computing the Company 's profits for Income Tax purposes. The Lord Chancellor observed: "In my opinion	 however	 it does not follow that if a loss is in any sense connected with the trade	 it must always be allowed as a deduction; for it may be only remotely connected with the trade or it may be connected with something else quite as much as or even more than with the trade. I think only such losses can be deducted as are connected with it in the sense that they are really incidental to the trade itself. They cannot be deducted if they are mainly incidental to some other Vocation	 or fall on the trader in some character other than that of trader. The	 nature of the trade is to be considered. To give an illustration	 losses sustained by a railway company in compensating passengers for accident in travelling might be deducted. on the other hand	 if a man kept a grocer 's shop	 for keeping which a house is necessary and one of the window shutters fell upon and injured a man walking. in the street	 the loss arising thereby to the grocer ought not to be deducted. Lord Davey did not apply this test and put the matter thus: I think that the payment of these damages was not money expended "for the purpose of the trade". These words are used in other rules	 and appear to me to mean for the purpose of enabling a person to carry on and earn profits in the trade	 &c. I think the disbursements permitted are such as are made for that purpose. It is not enough that the disbursement is made in the course of	 or arises out of	 or is connected with	 the trade or is made out of the profits of the trade. It must be made for the purpose of earning the p rofits." Lord Chancellor 's observations in Woodfield 's case were not accepted by Lord Atkinson in Smith vs Lion Brewery Com pany(1). The Brewery_ Company were the owners or lessees of a number of licensed premises which they had acquired as part of their business as brewers and as a necessary incident of its profitable exploitation. The licensed premises were let to tenants	 who were "tied" to purchase their beers from the company. Under the Licensing Act	 1904	 compensation Fund Charges were levied in respect of the excise "on" licences held by the tenants who paid the charges and recouped themselves by (1) 22 deduction from the rents which they paid to the company. It was claimed by the company that in computing their	 profits for assessment to Income Tax they should be allowed to deduct the sum of the amounts ultimately borne by them in respect of the Compensation Fund Charges. The Court of King 's Bench held that the deduction claimed was inadmissible. This decision was reversed in the Court of Appeal (Kennedy	 L.J.	 dissenting)	 and opinions in the House of Lords being equally divided the judgment of the Court of Appeal was sustained. Earl Halsbury	 in holding in favour of the Brewery	 observed that "lie (trader) must if he carries on that business or that trade pay this tax; it is the act of the Legislature which makes him pay it and it is not a thing that is open to his own will or option." Lord Atkinson observed "Again		 it is urged that the landlord pays his contribution as landlord and because of his proprietary interest in the premises and not as trader	 since he would be equally liable to it whether he traded or not. That	 no doubt	 is so	 but in the present case the Company have become landlords and thus liable to pay the charge	 for the purpose solely and exclusively of setting up the tied house system of trading. If the Company took under lease a plot of land to enlarge their brewery or took similarly premises in which to establish a depot to sell their beer through an agent	 the same criticism might be applied with equal force to the payment of the rent reserved by the lease. They would pay it as lessees	 not as brewers. They would pay it whether they continued to brew or not. Yet under the provisions of the very rule relied upon in this case	 they would be entitled to deduct the rent from the profits earned	 and that	 too	 utterly irrespective of whether the receiver of the rent used it to pay for his support or for his pleasure or even to set up a rival brewery. Indeed	 even in a contract made for the purchase of material such as hops or malt	 the Company would have to pay for the commodity supplied	 not because they are brewers	 but because they were contracting parties	 utterly irrespective of whether they carried on their trade or had abandoned it. Yet it can hardly be suggested that the price paid for the hops or malt under the contract should not be deducted from the receipts. There is	 therefore	 in my opinion	 nothing in this ob jection." In Usher 's Wiltshire Brewery Ltd vs Bruce(1) a brewery company were the owners or lessees of a number of licensed premises which they had acquired solely in the course of and for the purpose of their business as brewers and as a necessary incident to the more profitably carrying on of their said business. The licensed premises were let to tenants who were "tied" to purchase their beers	 etc. from the Company. The Company claimed that in the computation of their profits for assessment under Schedule D	 the following expenses incurred in connection with these tied houses should be allowed (A) repairs to tied houses; (B) differences between rents of leasehold houses or Schedule Assessment of freehold houses on the one hand and the rents received from the tied tenants on the other hand; (C) fire and licence insurance premises; (D) rates and taxes; It was held by the House of Lords that all the expenses claimed were admissible as being money wholly and exclusively laid out of expended for the purpose of the trade of the Brewery Company. In this case	 Horridge	 J. held that "on the facts found the Fire and Licence insurance Premiums	 the Rates and Taxes and the Gas and Water were all expenditure essential to the earning of the profits	 and I think they also are governed by Smith vs The Brewery Company(1) and are proper deductions. " The Court of Appeal	 regarding Rates and Taxes	 said "The next head is "D.	 Rates and Taxes pound 3 8 7s. " These are sums which the tenants were under a legal obligation to pay pursuant to their covenant in the tenancy agreement. The Company	 however	 did not	 for the reasons stated under A in the Case enforce the tenants ' covenants to pay	 and consequently paid the rates and taxes themselves. These reasons have been stated and appear in the Case	 and need not be repeated; in brief; They are commercial interest and expediency	 and avoidance of inconvenience. I am of opinion that these rates and taxes so paid are in no sense deductions which are allowable from the Company 's profits. " (1) (2) 24 The ' House of Lords	 however	 allowed these items. Lord Atkinson at page 422 of the report said "Stated broadly	 I think that that doctrine amounts to this	 	hat where a trader bona fide creates in himself or acquires a particular estate or interest in premises wholly and exclusively for the purposes of using that interest to secure a better market for the commodities which it is part of his trade to vend	 the money devoted by him to discharge a liability imposed by Statute on that estate or interest	 or upon him as the owner of it	 should be taken to have been expanded by him wholly and exclusively for the purposes of his trade;" Then regarding these items he observed: "The small items were not much contested in arguments. I concur	 however	 with Mr. Justice Horridge in thinking they ought to be allowed." Lord Parker observed: "My Lords	 the Appellants claim deductions under three other heads : (1) Fire and licence insurance premiums	 (2) Rates and taxes	 and (3) Legal and other costs. The Attorney General did not object to these deductions being allowed	 and indeed having regard to what I have already said and to the facts ad mitted in the Supplementary Statement	 p. 7	 of the Appendix	 it would be difficult to contend that they were not proper and necessary deductions in ascertaining the balance of profits and gains of the Appellants ' 	trade	 or that they are within any of the prohibitions contained in the Rules. " Lord Summer observed "The remaining items	 rates and taxes	 premiums and costs call for no special observation. In my view	 the case means to find them all to be disbursements and money "wholly and exclusively expanded for the purposes of the trade	, and that being so in fact, I ,think there is no reason why they may not be so in law. They are accordingly covered by the decision on the rent and the repairs. It may be mentioned 'that there was no express statutory provision for deduction of rates and taxes in the English Income Tax Act and yet they were allowed as a necessary deduction for the 'purpose of carrying on trade. There is no doubt that in one 25 sense when rates and taxes on property are		 paid by a trader he pays them as owner or occupier because taxes are either on possession of property or on its ownership. But when the assessee has a dual capacity	 i.e.	 he is owner cum trader	 why should it be not deductible when according to ordinary commercial principles he would be treated as paying it as trader. Take the case of taxation on a motor vehicle. The tax is levied under the Motor Vehicles Act on the possession or owner ship of a motor car	 When a owner cum trader pays the tax in respect of a vehicle used solely for the purpose of trade	 nobody doubts	 and the	 learned counsel for the Revenue did not contest the position	 that the tax would be deductibles as an expense. Now	 why is it deductible ? The only rational explanation seems to us to be that when a person has a dual capacity	 of a tradercum owner	 and he pays tax in respect of property which is used for the	 purpose of trade	 the payment must be taken to be in the capacity of a trader according to ordinary commercial principles. This aspect is also clearly brought out in Moffatt vs Webb(1)	 which was not cited before this Court then. The taxpayer was a grazier	 and during the year '1911	 carried on business	 and was still carrying on ' business as such in Victoria upon lands of the fee simple	 of which he was during the said year and still was the owner. The	 said lands comprised 17	970 acres or thereabouts	 and their unimproved value had for the purposes of the Land Tax Assessment Act 1910 of the Commonwealth of Australia been assessed at pound 44	924. He paid Commonwealth land tax amounting to pound 3 87 on the unimproved value of the Said lands. The taxpayer claimed to deduct this tax from his income as an outgoing incurred by him "as a disbursement" or expenditure being wholly and exclusively laid out or expanded for the purpose of his trade. The High Court of Australia held that the tax was properly deductible either as an outgoing actually incurred by him in production of income or a disbursement of money wholly and exclusively laid out or expanded for the purpose of trade. Griffith	 C.J.	 summed up the argument as follows : "The	 possession of land is necessarily incident to carrying on the business of a grazier the payment of land tax is it necessary consequence of the possession of land of tax	 able value	 whether the land is freehold or leasehold; the payment of land tax is therefore a ' necessary incident of carrying on the business of grazing. The case therefore	 seems to me to come within the exact words of the first paragrapher sec.9." (Sec. 9 is substantially similar to section 10(2) (xv) of the Indian Income Tax Act	 1922). Barten	 J.	 observed ". the sole use to which the appellant puts the land is for the purposes of his business as a grazier. He needs a large area of land for that purpose	 and this area of about 18	000 acres is applied to his business needs. It seems too much 'altogether to say that he would have to pay. the federal tax on this land if he did not carry on the grazing business. Somebody would be wed	 no doubt	 but would it be the appellant ? It cannot be predicated that he would own the land at all if he carried on any other business. It is scarcely an inference from the case to say that he hold ' the lands simply as an instrument essential to the proper conduct of his business : I think it is the fair meaning of the first paragraph at which we can arrive without inserting anything not imported by the words. If I am right there	 then is 'the land tax payment a disbursement or expense wholly and exclusively laid out or expanded for the purposes of the business ? It may not be so if the criterion is whether the business could be carried on without payment of the tax. But I do not think that is the criterion. Is the payment wholly and exclusively incidental to the carrying on of the business ? Well	 it is only by reason of the necessity of land for his business that he holds this land	 and it is only because of his holding it for his business that he necessarily pays the tax	 for without the business it cannot be said that he would hold the land at all. In view	 then	 of the particular facts	 I think the payment is incidental to the conduct of his business	 and that it is money wholly and exclusively expended for the purposes of his trade." Issaes	 J.	 was impressed by the reasoning of Lord Halsbury and Lord Atkinson in Smith vs Lion Brewery	 Co. Ltd.(1). He observed : "And Lord Atkinson reasons out the position and shows convincingly	 to my mind that	 though a tax may in I one sense be paid as owner or lessee	 in another it is paid as trader. The instance he puts as to licences are undeniable	 and I cannot distinguish them from this case. To carry the matter further : Suppose the Federal Parliament were to	 lay a tax on the owners of motor cars	 and carts	 and guns	 and dogs and sheep. so that (1) 27 the tax was payable whether these things were employed in trade or not could it be doubted that the tax would be a real outgoing necessary for the production of the income of a business in which they were all used? The land is as necessary To the business as the personal property. And the fallacy of the contrary doctrine consists in this; it confuses	 not so much the meaning	 as the application of the word "purpose". The land tax is enacted by legislature for its own purpose	 that is	 to tax the owner; and when he pays it to the Crown	 he pays it as the owner	 it is true	 but so far	 not for any purpose of his. He simply pays it because he is obliged to by law. But when he uses the property to produce an income that is	 for his business purposes	 he pays the tax inseparably connected with the land also for his business purposes	 namely	 as an outlay necessary in the existing state of the law to obtain that income by means of that land." The unsoundness of the test of the capacity in which payment is 'Made was commented upon in Harrods (Bueonos Aires) Ltd. vs Taylor Gooby(1) by the Court of Appeal. The facts can be conveniently taken from the head note. "The Appellant Company	 which was incorporated and resident in the United Kingdom	 carried on the business of a large retail store at Buenos Aires. In consequence the Company was liable in Argentina to a tax known as the substitute tax	 which was levied on joint stock companies incorporated in Argentine	 and on companies incorporated outside	 Argentine which carried on business there	 as did the Appellant Com pany	 through an "empress estable". The tax was charged annually at the rate of one per cent on the Company 's capital and was payable whether or not there were profits liable to Argentine income tax. Under Argentine law there were sanctions available to remedy non payment of the tax. On appeal against an assessment to Income Tax under Schedule D for the year 1959 60 it was contended on behalf of the Company that it paid the substitute tax solely for the purpose of enabling it to carry on business in the Argentine since	 if it had not paid it	 it would have been unable to carry on its business there	 and that the tax was therefore deductible as "money wholly and (1) 28 exclusively laid out or expended for the purposes of (its) trade"	 within the meaning of Section 137(a)	 Income Tax Act	 1952. For the Crown	 it was contended (inter alia) that the Company paid the tax in the capacity of taxpayer rather than trader. " Willmer	 L.J.	 referred to Commissioners of Inland Revenue vs Dowdall O 'Mahoney & Co. (1) and observed: "I can find no sup port whatever in this case for the proposition that the question depends on the capacity in which the taxpayer pays the taxes. " After referring to Smith vs Lion Brewery(2) case he observed "It appears to	 me that these two decisions of the House of Lords are not only quite inconsistent with the principal submission put forward on behalf of the Crown in the present case	 but that the ratio decidendi of both cases	 as stated by Lord Atkinson	 is really decisive in favour of the Company. " Dancwerts	 L.J. observed "In Rushden Heal Co. Ltd. vs Keens(3)	 to which I have referred	 Lord Greene	 M.R.	 in 30 T.C. page 316 7	 introduced a test of a different kind from that to which I have referred. He seems to draw a distinction between payments made by a trader in the character of taxpayer and not	 or not wholly	 as trader. I find this idea difficult to	 follow and not very helpful in	 discussing the subject in issue. It seems to me very difficult to say where to draw the line between the two capacities	 and not as satisfactory as the test which has been adopted in the cases to which I have referred. Everyone who pays taxes pays because be is taxed and is a taxpayer." Diplock	 L.J.	 also criticized the test in these words "it is contended for the Crown that the Company Paid the tax in its capacity as a taxpayer	 not in	 its capacity as a trader. But with great respect to Lord Greene	 M.R. 's Judgment in the Rushden Heel Co. 's on which this Convention was mainly based	 this is merely playing with words. As pointed out by Willmer	 L J.	 this. ratio decidendi "was not adopted by the House (1) (3) (2) 29 of Lords in the same case and cannot	 in my	 view	 survive Lord Atkinson 's earlier criticism of a similar argument in the Lion	 Brewery case which Willmer L.J.	 has already cited. You can always find some label other than "trader" to describe the capacity in which a trader makes any disbursement for the of his trade. He pays rent for his business premises in the capacity of "tenant"	 rates in the capacity of "Occupier "	 wages in the capacity of "employer"	 the price of goods in the capacity of "buyer". But if he has become tenant or occupier of those particular pre mises	 employer of those particular servants or buyer of those particular goods solely for the purposes of his trade	 the money which he has expended in any of the capacities so labelled is a deductible expense in computing the profits of his trade. The learned counsel for the Revenue did not say that these cases had been wrongly decided." What he said was that if the real nature of wealth tax is appreciated	 it is impossible to equate the "net wealth" with "land" used by the grazier in Moffatt vs Webb(1) or with "tied house in Smith vs Lion Brewery Compnay(2) or with the "Company 's Capital" in Harrods (Bueonos Aires) Ltd. vs Taylor Gooby(3). He said that in all these cases the tax was being levied on the asset of the business which was being used for the purpose of business. In the present case	 according to him	 the net wealth could not be likened to an asset owned by the trading company. To this the learned counsel for the appellant retorted that in the case especially of a trading company all the assets are owned and liabilities incurred for the purposes of trading	 as outlined in its Memorandum of Association; if	 all the assets are owned and used for the purpose of the trade the net wealth would also be owned and used for the purpose of trade. He said that it would be possible for a company to mortgage its net assets to a bank and if a company did that	 it could not be said that the net wealth or net assets had not been used for the purposes of business. If tax was levied on the capital value of assets without allowing deduction of debts it is clear that the tax would be deductible. What difference does it make if debts are deducted from the capital value of assets. The net wealth is as much an instrument of trade as the capital value of assets. We find it very difficult to distinguish the case of a trading company like the assessee	 on principle	 from that of the grazier or the brewery company	 in the cases referred to above. (1) ; (2) (3) 30 In our view the test adopted by this Court in Travancore Titanium case(1) that "to be a permissible deduction	 there must be a direct and intimate connection between the expenditure and the business	 i. e.	 between the expenditure and the character of the assessee as a trader	 and not as owner of assets	 even if they are assets of the business" needs to be qualified by stating that if the expenditure is laid out by the assessee as Owner cum trader	 and the expenditure is really incidental to the carrying on of his business	 it must be treated to have been laid out by him as a trader and as incidental to his business. It was pointed out by the learned counsel for the Revenue that it would be difficult to allow the deduction of wealth tax in respect of individuals who have both business assets and debts and non business assets and debts. But the Wealth Tax Return form itself requires the assessee to show what are the business assets and liabilities and what are non business assets and liabilities. At any rate it should not be difficult to evolve a principle or frame statutory rules to find out the proportion of the tax which is really incidental to the carrying on of the trade. On the facts of this case it is clear that payment of wealth tax was really incidental to the carrying on	 of the assessee company 's trade. Accordingly	 we hold that the appellant is entitled to succeed. The appeals are allowed	 the judgment of the High Court set aside and the question answered in favour of the assessee. Parties will bear their own costs throughout. Beg	 J. My lord the Chief Justice has quoted certain tests laid down by Gajendragadkar	 C.J.	 speaking for this Court	 in Keshav Mills Co. Ltd. vs Commissioner of Income Tax	 Bombay North(2)	 which have to be satisfied before we could properly dissent from a previous decision of this Court. In such a case	 I think I should indicate my reasons for reaching a concurring conclusion	 with very great respect	 that an earlier	 opinion of this Court	 on the very question before us now	 needs revision. The error which crept into the decision of Travancore Titanium Products Ltd. vs Commissioner of Income tax	 Kerala(1) could be traced to an application of the rather speciously stated criterion laid down	 in the House of Lords in Strong & Co. of Romsey Ltd. vsWoodfield(3)	 by the Lord Chancellor who said there that expenses cannot be deducted	 in computing profits	 "if they are mainly incidental to some other vocation	 or fall on the trader in some character other than that of trader. The nature of the trade is to be considered". But	 Lord Davey	 looking at the case from (1) ; (2) ; (3) ; 31 a somewhat different angle	 "said:	 "it was not enough that the bursement is made in the course of	 or arises out of	 or is connected with	 the trade or is made out of the profits of the trade. It must be made for the purpose of earning profits". 'The two tests were not identical. The ratio decidendi of Strong 's case would not have been open to criticism if the noble Lords could have held there and had made it clear that they were holding nothing beyond that a tradesman who has to pay damages for injury to his customer due to his personal neglect in maintaining his premises	 even though these premises are used for trade	 was not entitled to deduct them in computing his profits for the purposes of paying income tax just as he Could not claim a deduction for damages he will have to pay as a wrong doer for assaulting or defaming a customer who comes into his shop. It is no part of normal business to commit such wrongs. Liabilities so incurred could very well be looked upon 	is outside the course of trading altogether even if they arise out of commercial activity or result from something connected with or meant to serve any commercial purpose. Their Lordships	 however	 used language which could cover more than what could be attributed to the tradesman 's own purely personal wrongs. The facts of that case show that the negligence which resulted in payment of damages	 for which a deduction was claimed	 was that of servants employed as an ordinary incident of trading so that the master was only vicariously liable as an inn keeper and an employer. And	 this aspect of the case made Lord James	 in Strong 's case	 doubt the correctness of the opinion which he	 very hesitatingly	 decided to accept. In Smith vs Lion Brewery Company	 Limited(1)	 compensation fund charges levied under statutory provisions were held	 by the Court of Appeal	 to be permissible deductions in computing profits on the ground that they were "wholly or exclusively laid out ' for the purpose of earning profits. This decision had to be upheld by the House of Lords where opinion was evenly divided when the case was taken up there. Hence	 the test laid down there by the Court of Appeal was held by Farl Loreburn to he binding upon him	 in Usher 's Wiltshire Brewery Ltd. vs Bruce(2)	 although lie had himself not accepted it in Lion Brewery 's case. in In Rushden Heel Co. Ltd. vs Commissioner of Inland Revenue (3) Lord Greene	 M.R.	 in disallowing deduction of expenses incurred in contesting claims for payment of Excess Profits Duty	 from a computation of profits for purposes of paying Income tax	 applied the test of character or capacity in which the expense was incurred. He held that the disbursment had to be disallowed on the ground "that the expenditure was incurred by the Company primarily in its capacity as a taxpayer and for the purpose of regulating the Position as between itself as a taxpayer and the Crown. " The House of Lords upheld the decision	 following its slightly earlier pronouncement by a majority	 in Smith 's Potato Estates Ltd. vs Bolland(1)	 but it did so on the ground that the expenses under consideration	 incurred on litigation	 related to a computation of Excess Profits Duty which had to take place after profits had been calculated. In Artherton vs British Insulated and Helsby Cables Ltd.(1)	 however	 the test in Usher 's Wiltshire Brewery case (supra) was applied to hold that even sums expended "not of necessity with a view to a direct and immediate benefit to the trade	 but voluntarily and on the grounds of commercial expediency and in order to directly facilitate the carrying on. the business may yet be expended wholly and exclusively for the purposes of the trade". In Mogan vs Tata & Lyle Ltd. (3)	 the House of Lords had used Lord Davey 's test in Strong 's case (supra) to justify deduction of sums spent on propaganda to oppose threatened nationalisation of	 the Sugar Refinery industry as money spent "wholly and exclusively for the company 's trade". The decision of the Court of Appeal	 in Harroda (Buenos Aires) Ltd. vs Taylor Gooby (4)	 fully exposed the fallacy involved in applying	 without close examination	 the test of capacity	 for the possession of which in a tax may be imposed	 to every levy of a tax	 by extending the alluringly simple formula of the Lord Chancellor	 in Strong 's case	 to cases for which it could not have been meant. In Harrods ' case	 deduction was claimed	 in computing annual profits of a Company	 of a 'Substitute Tax which had to be paid on the Company 's capital in Argentina	 irrespective of the profits made on it (just like the Wealth Tax before us). The Court of Appeal quoted passages from the opinions of the Law Lords	 in Rushden Heel Co. 's case (supra) and Smith 's Potato Estates ' case (supra)	 to show that the ratio decidendi of these two decisions confined the principle applied there to cases where taxes	 like the Income Tax and the Excess Profits Tax	 had to be paid upon and after a calculation of profits and did not extend to other cases. In other words	 where profits	 the net gains of business determined after making all permissible deductions	 are taxed	 the disbursements to meet such taxes cannot be deducted where the tax was levied	 as it was in Harrods ' case	 on capital or assets used for the purpose of earning these profits	 it was a permissible deduction in calculating profits. (1) 30 T.C. p. 267. (2) 10 T. C. P. 15 5. (3) 35 T.C. p. 367. (4) 41 T.C. p. 450. 33 In Harrods ' case	 both Willmer	 L.J.	 and Diplock	 L.J. had made use of Lord Davey 's test set out above	 from Strong 's case (supra). They held the ratio decidendi of the "tied house" cases and not Lord Loreburn 's test to be applicable to payment of taxes on assets used for trading exclusivelye. Willmer	 L.J.	 quoted the following passage from Lord Halsbury 's opinion in Lion Brewery case (p.466) "Again	 it is urged that the landlord pays his contribution as landlord and because of his proprietary interest in the premises and	 not as trader	 since he would be	 equally liable to it whether he traded or not. That	 no doubt	 is so	 but in the present case the Company have become landlords and thus liable to pay the charge	 for 	the purpose solely and exclusively of setting up the tied house system of trading." Lord Atkinson 's view	 expressed in the following words in the same case	 was also relied upon by the learned Judge (p.466) : "Stated broadly	 I think that doctrine amounts to this	 that where a trader bona fide creates in himself or acquires a particular estate or interest in premises wholly and exclusively for the purposes of using that interest to secure a better market for the commodities which it is part of his trade to vend	 the money devoted by him to discharge a liability imposed by Statute on that estate or interest	 or upon him as the owner of it	 should be taken to have been expended by him wholly and exclusively for the purposes of his trade". In Harrods case	 the Court of Appeal	 after a comprehensive survey of all the relevant English authorities	 considered the proposition accepted by it	 that the 'substitute tax '	 levied on the company 's capital	 was a permissible deduction in calculating the profits of a company for paying income tax	 to be so clear and free from doubt	 on the authorities then existing and applied	 that it refused even leave to appeal to the House of Lords. If there could be any doubt about the correct position of a tax like the one before us	 a perusal of the opinions given by Australian Judges	 in Moffat vs Webb	 (1) where after a discussion of the relevant English authorities	 land tax paid by a grazier on land used by him to earn income was held to be deductible in computing it for paying income tax	 would lay to rest	 if I may so put it 	 the disembodied ghost of a tradesman 's non trading character	 a pure abstraction	 which is sought to be used before us	 by the learned Counsel for the Income tax Department	 to prevent wealth tax paid on even the wholly commercial assets	 (1) 16 Commonwealth Law Reports p. 120	 34 constituting a part or whole of the taxable "net wealth"	 used 	exclusively for purposes of trade	 from being deducted as allowable expense	 under Sec 10(2)(xv) of the Income tax Act	 1922. On the earlier occasion	 when Travancore Titanium Co. 's case (supra) was argued in this Court	 Moffat vs Webb (supra) was not cited. Although	 there are references in the	 judgment 	of this Court	 in the earlier case	 to the "tied house" cases and to Harrods ' case (supra)	 these were held to be distinguishable on facts	 but	 the test propounded by Lord Chancellor Loreburn	 in Strong 's case	 was applied to disallow deduction of wealth tax in computing profits. After going through all the relevant authorities	 I have no doubt whatsoever left in my mind that it is the ratio decidendi of "tied house" cases and Harrods ' case (supra) which is the same as that of the Australian case	 that applies here and not Lord Chancellor Lorebum 's test laid down in a very different context than that of payment of a tax as a necessary precondition of earning more profits. I do not think that the test of trading character	 when incurring an expense for which a deduction is claimed	 is without its uses. There are cases where the question has arisen whether a payment was gratuitous or unnecessary or not made for a bona fide commerical purpose or connected more with some ulterior object really falling outside the normal sphere or regular course of commerce	 such as the compounding of an offence even if committed while trading. In J. K. Cotton Spinning & Weaving Mills Co. Ltd. vs Commissioner of Income Tax(1)	 I had occasion to consider	 a case where the test of trading character or capacity in which a payment is made as well of causal connection between	 the payment and a legitimately commercial purpose could	 it seemed to me	 be both simultaneously employed. But	 in cases of payment of taxes	 a concentration on the test of capacity for which payment becomes necessary is certainly liable to mislead us. A question which did trouble my mind was whether	 in view what this Court had held in Travancore Titanium case (supra)	 it could be said that any "accepted commercial practice and trading principles" could exclude wealth tax from the computation of profits	 with which Sec.10 sub.section (1) and (2) of the Income tax Act are concerned. One of the grounds given by this Court	 to support	 its view there	 was that "the nature of the expenditure of the outgoing must be adjudged in the light of accepted commercial practice and trading principles". Speaking for myself	 I was inclined to take the view that	 if the earlier decision of this Court could be justified by a reference to some "commercial practice or trading principles" which could be implied by	 or	 read into	 the very process of computation of profits with which provisions of Section (1) A.T.R. 1967 All.p. 513.35 10(1) & (2) of the income tax Act	 1922	 are concerned	 it must stand. I find	 however that no case	 apart from the Observations mentioned above	 contained in the Travancore Titanium Co. 's case was cited to support this line of reasoning. All the other cases brought to our notice	 which are discussed above	 indicate that 	.commercial practice and trading principles" also warrant such deductions of a tax on assets for capital used wholly and exclusively for carrying on trade or earning profits. They may preclude deductions of taxes on net profits but not those imposed on net assets or wealth used exclusively for making profits. "Commercial practice and trading principles" could vary ' These terms appear to be rather vague and indefinite. The meanings of the relevant statutory provisions seem much more fixed and definite. All that the language of Sec.10(2)(xv) apparently requires	 for claiming its benefit	 is proof of a direct causal connection between an outgoing and the commercial purpose which necessitates it. Whatever "commercial practice or trading principles" may imply or import	 they could not alter the meaning of statutory pro visions or travel beyond it. Another question which engaged my attention was whether Wealth Tax could be excluded from the purview of of Sec.10(2)(xv) simply because it was a tax on assets or "net wealth" paid by its owner so as to reduce his wealth. This	 line of thinking	 however	 seemed to me to bring in	 through the backdoor	 the misleading test of either the capacity as owner for the possession of which or the purpose for which the wealth tax may be demanded	 instead of the inevitable need and the purpose of the trader in paying the tax	 as relevant matters. In Lion Brewery 's case (supra)	 Lord Halsbury had declared the unavoidable need to satisfy a statutory demand for the purpose of making profits as the really relevant question for consideration in such cases. He said	 about "the purpose for which the Government have exacted the tax"; "whatever that purpose may be it is immaterial". It may be that the purpose of the tax before us could be considered in order to determine whether its nature is such as to necessarily imply that it cannot be taken into account in calculating profits or gains of business under Sec.10 sub	 section (1) & (2) of the Income tax Act. The nature of the Wealth Tax was examined by this Court in Union of India vs Harbhajan Singh Dhillon(1). where the following passage was quoted from "Readings on Taxation in Developing Countries	 by Bird & Oldman	 dealing with the concept of Wealth tax : "The term 'net wealth tax ' is usually defined as a tax annually imposed on the net value of all assets less liabilities of particular tax payers especially individuals. (1) [1971] (2) Supreme Court Cases p. 779 @ 806. 36 This definition distinguished the net wealth tax from other types of taxation of net wealth	 such as death duties and a capital levy; the former are imposed only at infrequent intervals once a generation while the latter is a one time charge	 usually with the primary Purpose of redeeming a war time national debt. The net wealth tax is really intended to tax the annual yields of capital rather than the principal itself as do death ' duties or a capital levy	 even though it is levied on the value of the principal. Since it tax es net wealth	 it also differs from Property taxes imposed on the gross value of property primarily real property in a number of countries. The net wealth tax gives consideration to the tax payer 's taxable capacity through the deduction of all outstanding liabilities and personal exemptions as well as through other devices	 while the property tax generally does not take these factors into account. The net wealth tax is therefore deemed to be imposed on the person of the taxpayer	 while the property tax often deemed to be imposed on an object the property itself". It is	 true that wealth tax is imposed on "net wealth" of assessees 	 as defined by Sec.2 sub section(c)	 who are all "persons". These persons are both natural and artificial. In the case of an artificial or juristic person like the Company before us	 it seems very difficult to separate the purpose of the juristic "persona" which is certainly commercial	 from the character of the "persona" itself. Even as regards other traders	 that part of tax which falls on what is used exclusively for trade could be really ascribed only to a trading character. To the extent it is a tax on property used for earning profits	 it must enter into a computation of profits from trading. On going through the provisions of Wealth Tax Act as well as the Income tax Act it was not possible for me to infer that the payment of Wealth tax must be excluded from the computation of profits under Sec.10 sub.section (1) & (2) of the Income tax Act. It appears to me that nothing less than express statutory provision would justify a denial of the right to a deduction which the language of Sec.10 sub.section (2) (xv) confers upon an assessee. On looking at the position of law in America on this subject	 I find that there are statutory provisions which deny deductions of certain taxes only	 such as income tax	 and taxes on war profits and excess profits	 gifts	 inheritance	 legacies	 and succession (See U.S. Code 1958	 ed.Titles 22 26 "Internal Revenue Code"	 p. 4287 paragraph 164). A general statement of the law on this subject there is that it 37 "does not prevent (a) a deduction therefor under Sec.23(a) provided it represents an ordinary and necessary expense paid or incurred during the taxable year	 by a corporation or an individual in carrying on any trade or business	 or	 in the case of an individual	 for the production or collection of income	 or for the management	 Conservation	 or maintenance of property held for the production of income	 or (b) the inclusion of such tax paid or incurred during the taxable year by a corporation or an individual as a part of the	 cost of ac quisition or production in the trade or business	 or	 in the case of an individual	 as a part of the cost of property held for the production of income with respect to which such tax is paid or incurred". (See Jacob Mer tens Law of Federal Income Taxation: Vol 5	 1954 Cumulative Pock et Supplement	 Chapter 27	 paragraph 27.01). Learned Counsel for the Department relied upon the diffi culty in separating that Dart of the tax which is levied on any part of the net wealth	 used wholly and exclusively for trade		 from the rest of it. We arc	 strictly speaking	 concerned only with the correct interpretation of Sec.10 sub section (2) (xv) of the Act and with the definition of "net wealth" given in Sec. 2(m) of the Wealth Tax Act on which incidence of the tax levied under Sec.3 falls. In order to determine whether	 as a matter of principle	 a tax so defined and imposed would be covered by Sec.10 sub.s.(2)(xv) of the relevant Income tax Act	 the difficulty which may arise in actually computing the deductible amount does not seem 	to be a material consideration. Moreover	 the fact that "net wealth" is an amount by which an aggregation of all the assets exceeds all the debts does not seem to impose any intractable difficulty in the way of calculating what part of the net wealth is used for trade or business of an assessee and what is not. An aggregation means a collection of items added up which can be separated and not a mixture the ingredients of which become inseparable. Assuming	 however	 that there is some difficulty in separating that part of the tax which is payable in respect of net 	wealth used only for trade from that part of it which is imposed on a portion of net wealth not so used	 I fail to see how the principle involved or meaning of the relevant provisions	 with which we are concerned here	 will be affected. Mr. Chagla	 appearing for an assessee	 drew our attention to the division into two heads	 one of business assets and another of the "other assets"	 which is found in form 'A ' prescribed by the rules for the Wealth Tax return. This means that the Wealth Tax Act itself makes that part of the net wealth separable which can be utilised wholly and exclusively for trade from the remainder of it. If this can be	 done	 it is difficult to see how that part of Wealth Tax could escape 38 deduction	 under Sec.10(2) (xv) of the Income tax Act	 which is attributable to such portion of the net wealth as is used wholly and	 exclusively for earning profits. To lay down	 as we are doing in this case	 that it is the causal connection between payment of tax and that part of net wealth which is used wholly and exclusively for trade and not the mere character or capacity for the possession of which the tax is demanded	 which determines whether it is an allowable deduction or not	 under Sec. 10(2)(xv) of the Act	 seems to me to amount to nothing more than to give effect to the plain and literal meaning of a provision of a taxing statute. There seems no need in such a clear case	 to invoke the aid of the well established cannon of construction that	 where a taxing provision is reasonably capable of two equally possible constructions	 the one which favours the assessee must be preferred. of course	 the burden of proving whether the whole or a part of the Wealth tax paid by an assessee is attributable wholly and exclusively to the carrying on of a trade	 and	 therefore	 is an allowable deduction	 must rest upon the assessee in each case. The argument on behalf of the assessees	 as I understand it	 goes no further. One of the tests laid down in Keshav Mills Company 's case (Supra) for deciding whether a previous erroneous view should be set right by this Court	 was whether any possible advantage to the public resulting from doing so would be outweighed by the mischief or harm a revision may cause. of course	 the ultimate determination of what public good requires the law to be must take place elsewhere But	 in deciding whether a previous interpretation of the law	 as it exists	 by this Court	 even if it be erroneous in some respe ct 	 needs revision by it	 a consideration of what public good demands undoubtedly lies within the province of our powers. It seems to me that the Wealth Tax Act was not intended to strike at or check expansion of commercial activites by either individuals or companies. Its underlying purpose was the removal of disparities of individual or personal wealth and not injury to trade. It could be said to be a tax aimed at individuals whose wealth exceeds certain limits. In so far as Ole particular interpretation which we are abandoning	 because of the infirmities found in it	 seemed to penalise mere expansion of business and 39 trade 'without serving the assumed underlying purpose of Wealthtax	 a revision of opinion does not appear to involve any such mischief or injury to the public as could stand in the way of correcting an erroneous view. I have	 therefore	 no hesitation left in my mind in holding that the view expressed by this Court in Travancore Titanium case (Supra) must be modified as indicated by My lord the Chief Justice. V.P.S. Appeal allowed.

The assessee	 a trading company	 paid wealth tax and sought to	 deduct it as a business expense under section 10(1) and section 10(2) (xv) of the Income Tax Act	 1922	 in computing its assessable incomes from business for the purpose of the Income Tax Act. The High Court held against the assessee following the decision of this Court in Travancore Titanium Product Ltd. vs C.I.T.	 ; The test adopted by this Court in the Travancore Titanium case was that "to be a permissible deduction	 there must be a direct and intimate connection between the expenditure and the business	 that is	 between the expenditure and the character of the assessee as a trader	 and not as an owner of the assets	 even if they are the assets of the business". Allowing the appeal to this Court	 HELD : The Court is unanimous that the test laid down in the decision in the Travancore Titanium case should be modified. [20A	 39B] (Per S.M. Sikri	 C. J.	 A. N. Grover	 A. N. Ray and D. G. Palekar	 JJ.) : (1) Certain important aspects of the question were not brought to the attention of this Court when the earlier case was decided. if that decision is modified as erroneous	 it is not likely to cause any public inconvenience hardship or mischief; and numerous assessees would be affected by the decision. [20A B] Keshav Mills	 Co. Ltd. vs C.I.T. ; 	 922	 followed. (2) There is no doubt that in one sense when rates and taxes on property are paid by a trader he pays them as owner or occupier	 because taxes are either on possession of property or on its ownership. But when a person has the dual capacity of a trader cum owner	 and he pays tax in respect of property which is used for the purpose of trade	 the payment must be taken to be in the capacity of a trader according to ordinary commercial principles. [25A B	 C D] Moffatt vs Webb	 ; applied (Not cited in the Travancore Titanium case. Smith vs Lion Brewery Company	 	 Usher 's Wiltshire Brewery Ltd. vs Bruce	 	 Harrods (Buenos Ayres) Ltd. vs TaylorGooby	 and observations of Lord Davey in Strong and Co. Romsey Ltd	 case ; 	 referred to. (3) In the case of a trading company all the assets are owned and the liabilities are incurred for the purpose of trading	 as outlined in its memorandum of association. If all the assets are owned and used for the purpose of trade	 the net wealth would also be owned and used for the 	purpose of trade. The net wealth is as much an instrument of trade as the capital value of assets. Therefore	.the test laid down in the earlier case should be qualified	 by stating that	 if the expenditure is I aid out by the 16 assessee as owner cum trader	 and the expenditure is really incidental to the carrying on of his business	 it must be treated as having bean laid out by him as a trader and as incidental to his business. [29F H	 3OA C] (4) It may be difficult for the Revenue to allow the deduction of debts	 and non business assets and debts. But the wealth tax return form itself requires the assessee to show what are business assets and liabilities and what are the non business assets and liabilities. At any rate	 it should not be difficult to evolve a principle or frame statutory rules to find out the proportion of the tax which is 'really incidental to the carrying on of the trade. [30C E] (Per M. H. Beg	 J.) : (1) One of the tests laid down in Keshav Mills co 's case ([1965]/2 S.C.R.908)	 for deciding whether a previous erroneous view should be set right by this Court	 is whether any Possible advantage to public resulting from doing so would be outweighed by the mischief or harm a revision may cause. [38E F] The Wealth Tax Act was not intended to strike at or check expansion of commercial activities by either individuals or companies. Its underlying purpose is the removal of disparities of individual or personal wealth and not injury to trade. The interpretation placed in the Travancore Titanium case ([1966] 3 S.C.R. 321) seems to penalise mere expansion of business and trade without serving the underlying purpose of wealth tax. Therefore	 a revision of opinion does not involve any such mischief or Such injury to the public interest as would stand in the way of correcting an erroneous view. [38G H	 39A B] (2) The error which crept into the Travancore Titanium decision could be traced to an application of the criterion stated by the Lord Chancellor in Strong and Co. of Romsey vs Woodfield ; 	 that if. the expenses fall on the trader in some character other than that of a trader	 they could not be deducted in computing profits. But in the same case	 another Law Lord laid down a somewhat different test that the payment to be deductible must have been made for the purpose of earning profits. [30G H	 31A B] (3) Liabilities incurred by a trader to pay damages for injury to his customer due to his personal neglect in maintaining his premises	 even though the premises were used for trade	 could be looked upon as outside the course of trading altogether even if they arise out of commercial activity or result from something connected with or meant to serve a commercial purpose. But in Strong and co. 's case the negligence which resulted in payment of damages	 for which the deduction was claimed	 was that of servants employed as an ordinary incident of trading	 so that	 the master was only vicariously liable; and the language used by the Lord Chancellor in that case covers more than what could be attributed to the trade man 's own personal wrongs. [31B E] (4) In later English cases the test adopted is whether the expenses sought to deducted 'wholly or exclusively laid out for the purpose of earning profits. [31F] Smith vs Lion Brewery Company Limited	 ; Usher 's Wiltshire Brewery Ltd. vs Bruce ; Atherton vs British Insulted and Halsby Cables Ltd.	 ; Margan vs Tate and Lyle Ltd.	 	 referred to. Rushden Hell Co. Ltd	 vs Commissioner of Inland Revenue	 and Smith 's Potato Estates Ltd. vs Bolland	 30 T.C. 267 explained 17 Where profits	 the net gains of business	 determined after making all permissible deductions. are taxed	 the disbursements to meet such taxes cannot be deducted. But	 when the tax 'was levied on capital	 or assets used for the purpose of earning those profits	 it was a permissible de duction in calculating profits. [32G H] Harrods (Buenos Ayres) Ltd. vs ' Taylor Gooby	 	 referred to. (6) The principle	 that tax paid by an assessee on property used by him to earn income is deductible in computing the income for paying income tax	 was also laid down in Moffatt vs Webb ; 	 which was not cited before this Court when the Travancore Titanum case was argued.[34A B] (7) The test of trading character when incurring an expense for which deduction is claimed can be utilised usefully only in cases where the question is whether a payment was gratuitous or unnecessary or not made for a bona fide commercial purpose or connected more with some ulterior object really failing outside the normal sphere or regular course of commerce	 such as the compounding of an offence even if committed while trading; but this could not be so in cases of payment of taxes[34D F] J.K. Cotton Spinning & Weaving Mills Co. Ltd. vs Commissioner of Income Tax	 A.I.R. 1957 All. 513	 referred to; (8) There is no accepted commercial practice or trading principle according to which wealth tax could not be deducted in the computation of profits under section 10(i) and (ii) of the Income Tax Act. Except the observation in the Travancore Titanium case	 all the other cases indicate that commercial practice and trading principles 'also warrant such deductions of tax on capital assets used wholly and exclusively for carrying on trade or for earning profits. Deductions of taxes on net profits may not be permited	 but those imposed on net assets or wealth	 used exclusively for making profits	 can be deducted in	 computing income for purposes of income tax. Moreover	 whatever commercial practice or trading principles may imply or import	 they could not alter the meaning of statutory provisions. All that the Language of section 10(2)(xv) requires	 for claiming its benefit	 is proof of direct causal connection between an outgoing and the commercial purpose which necessitated it. To lay down that it is the causal connection between the payment of tax and that part of the net wealth which is used wholly and exclusively for trade	 and not the mere character or capacity for the possession of which the tax is demanded	 which determines whether it is an allowable deduction or not	 under section 10(2) (xv)	 nothing more than giving effect to the plain and literal meaning of a provision of a taxing statute. [35A B	 35B C] (9) To exclude from the purview of section 10(2)(xv) wealth tax simply because it was a tax on assets or net wealth paid by its owner so as to reduce his wealth	 is to bring in the misleading test of either of capacity of the owner for the possession of which	 or the purpose for which	 the wealth tax may be demanded. instead of the inevitable need and the purpose of the trader in paying the tax	 as relevant matters. [35D F] (10) Wealth tax is imposed on net wealth of of assessees who are persons both natural and artificial. In the case of an artificial or juristic person like a company	 it is difficult to separate the purpose of the Juristic "persona" which is certainly commercial	 from the character of the "persona" itself. Even as regards other traders that part of the tax which falls on assets used exclusively for I trade could 'be really ascribed 18 only to a trading character. To the extent it is a tax on property used for earning profits it must enter into a computation of profits from trading. Therefore	 nothing less than express	 statutory provision would justify a denial of the right to a deduction which the language of section 10(2) (xv) confers upon assessees. [36D F] (11) The Court is not concerned with any difficulty in separating that pail of the tax which is levied on any part of the net wealth	 used wholly or exclusively for trade	 from the rest of it. The Court is concerned only with the interpretation of section 10(2)(xv) and not with any difficulty which may arise in actually computing the deductible amount. Moreover	 since net wealth is an amount by which an aggregation of all the assets exceeds all the debts there can be no intractable difficulty in calculating what part of the net Wealth is used for trade or business of an a sessee and what is not	 an aggregation being collection of items n being collection of items which can be separated	 and not a mixture whose ingredients became inseparable. Further	 the wealth tax return form divides wealth under two heads	 one of business assets and another of other assets	 showing that the Wealth Tax Act its itself makes that part of the net wealth separable which is used wholly and 'exclusively for trade from the reminder of it. If this can be done	 there is no difficulty in separating that part of the wealth tax which could be deducted under section 10(2)(xv) of the Income Tax Act. [37D G] Assuming there is some difficulty the principle involved or. the meaning of the relevant previsions will not be affected thereby.