# Principles of Political Economy (J.S. Mill, 1871), vol. 2/Book V, Chapter VII

This is the seventh edition of the Principles, which was first published 1848.
CHAPTER VII.
OF A NATIONAL DEBT.
§ 1.The question must now be considered, how far it is right or expedient to raise money for the purposes of government, not by laying on taxes to the amount required, but by taking a portion of the capital of the country in the form of a loan, and charging the public revenue with only the interest. Nothing needs be said about providing for temporary wants by taking up money; for instance, by an issue of exchequer bills, destined to be paid off, at furthest in a year or two, from the proceeds of the existing taxes. This is a convenient expedient, and when the government does not possess a treasure or hoard, is often a necessary one, on the occurrence of extraordinary expenses, or of a temporary failure in the ordinary sources of revenue. What we have to discuss is the propriety of contracting a national debt of a permanent character; defraying the expenses of a war, or of any season of difficulty, by loans, to be redeemed either very gradually and at a distant period, or not at all.
This question has already been touched upon in the First Book. We remarked, that if the capital taken in loans is abstracted from funds either engaged in production, or destined to be employed in it, their diversion from that purpose is equivalent to taking the amount from the wages of the labouring classes. Borrowing, in this case, is not a substitute for raising the supplies within the year. A government which borrows does actually take the amount within the year, and that too by a tax exclusively on the labouring classes: than which it could have done nothing worse, if it had supplied its wants by avowed taxation; and in that case ​the transaction, and its evils, would have ended with the emergency; while by the circuitous mode adopted, the value exacted from the labourers is gained, not by the state, but by the employers of labour, the state remaining charged with the debt besides, and with its interest in perpetuity. The system of public loans, in such circumstances, may be pronounced the very worst which, in the present state of civilization, is still included in the catalogue of financial expedients.
We however remarked that there are other circumstances in which loans are not chargeable with these pernicious consequences: namely, first, when what is borrowed is foreign capital, the overflowings of the general accumulation of the world; or, secondly, when it is capital which either would not have been saved at all unless this mode of investment had been open to it, or after being saved, would have been wasted in unproductive enterprises, or sent to seek employment in foreign countries. When the progress of accumulation has reduced profits either to the ultimate or to the practical minimum,—to the rate, less than which would either put a stop to the increase of capital, or send the whole of the new accumulations abroad; government may annually intercept these new accumulations, without trenching on the employment or wages of the labouring classes in the country itself, or perhaps in any other country. To this extent, therefore, the loan system may be carried, without being liable to the utter and peremptory condemnation which is due to it when it overpasses this limit. What is wanted is an index to determine whether, in any given series of years, as during the last great war for example, the limit has been exceeded or not.
Such an index exists, at once a certain and an obvious one. Did the government, by its loan operations, augment the rate of interest? If it only opened a channel for capital which would not otherwise have been accumulated, or which, if accumulated, would not have been employed within the country; this implies that the capital, which the government ​took and expended, could not have found employment at the existing rate of interest. So long as the loans do no more than absorb this surplus, they prevent any tendency to a fall of the rate of interest, but they cannot occasion any rise. When they do raise the rate of interest, as they did in a most extraordinary degree during the French war, this is positive proof that the government is a competitor for capital with the ordinary channels of productive investment, and is carrying off, not merely funds which would not, but funds which would, have found productive employment within the country. To the full extent, therefore, to which the loans of government, during the war, caused the rate of interest to exceed what it was before, and what it has been since, those loans are chargeable with all the evils which have been described. If it be objected that interest only rose because profits rose, I reply that this does not weaken, but strengthens, the argument. If the government loans produced the rise of profits by the great amount of capital which they absorbed, by what means can they have had this effect, unless by lowering the wages of labour? It will perhaps be said, that what kept profits high during the war was not the drafts made on the national capital by the loans, but the rapid progress of industrial improvements. This, in a great measure, was the fact; and it no doubt alleviated the hardship to the labouring classes, and made the financial system which was pursued less actively mischievous, but not less contrary to principle. These very improvements in industry, made room for a larger amount of capital; and the government, by draining away a great part of the annual accumulations, did not indeed prevent that capital from existing ultimately, (for it started into existence with great rapidity after the peace,) but prevented it from existing at the time, and subtracted just so much, while the war lasted, from distribution among productive labourers. If the government had abstained from taking this capital by loan, and had allowed it to reach the labourers, but had raised the supplies which it required by a direct tax on the labouring ​classes, it would have produced (in every respect but the expense and inconvenience of collecting the tax) the very same economical effects which it did produce, except that we should not now have had the debt. The course it actually took was therefore worse than the very worst mode which it could possibly have adopted of raising the supplies within the year: and the only excuse, or justification, which it admits of, (so far as that excuse could be truly pleaded,) was hard necessity; the impossibility of raising so enormous an annual sum by taxation, without resorting to taxes which from their odiousness, or from the facility of evasion, it would have been found impracticable to enforce.
When government loans are limited to the overflowings of the national capital, or to those accumulations which would not take place at all unless suffered to overflow, they are at least not liable to this grave condemnation: they occasion no privation to any one at the time, except by the payment of the interest, and may even be beneficial to the labouring class during the term of their expenditure, by employing in the direct purchase of labour, as that of soldiers, sailors, &c., funds which might otherwise have quitted the country altogether. In this case therefore the question really is, what it is commonly supposed to be in all cases, namely, a choice between a great sacrifice at once, and a small one indefinitely prolonged. On this matter it seems rational to think, that the prudence of a nation will dictate the same conduct as the prudence of an individual; to submit to as much of the privation immediately, as can easily be borne, and only when any further burthen would distress or cripple them too much, to provide for the remainder by mortgaging their future income. It is an excellent maxim to make present resources suffice for present wants; the future will have its own wants to provide for. On the other hand, it may reasonably be taken into consideration that in a country increasing in wealth, the necessary expenses of government do not increase in the same ratio as capital or population: any burthen, therefore, is ​always less and loss felt: and since those extraordinary expenses of government which are fit to be incurred at all, are mostly beneficial beyond the existing generation, there is no injustice in making posterity pay a part of the price, if the inconvenience would be extreme of defraying the whole of it by the exertions and sacrifices of the generation which first incurred it.
§ 2.When a country, wisely or unwisely, has burthened itself with a debt, is it expedient to take steps for redeeming that debt? In principle it is impossible not to maintain the affirmative. It is true that the payment of the interest, when the creditors are members of the same community, is no national loss, but a mere transfer. The transfer, however, being compulsory, is a serious evil, and the raising a great extra revenue by any system of taxation necessitates so much expense, vexation, disturbance of the channels of industry, and other mischiefs over and above the mere payment of the money wanted by the government, that to get rid of the necessity of such taxation is at all times worth a considerable effort. The same amount of sacrifice which would have been worth incurring to avoid contracting the debt, it is worth while to incur, at any subsequent time, for the purpose of extinguishing it.
Two modes have been contemplated of paying off a national debt: either at once by a general contribution, or gradually by a surplus revenue. The first would be incomparably the best, if it were practicable; and it would be practicable if it could justly be done by assessment on property alone. If property bore the whole interest of the debt, property might, with great advantage to itself, pay it off; since this would be merely surrendering to a creditor the principal sum, the whole annual proceeds of which were already his by law; and would be equivalent to what a landowner does when he sells part of his estate, to free the remainder from a mortgage. But property, it needs hardly be said, does not pay, ​and cannot justly be required to pay, the whole interest of the debt. Some indeed affirm that it can, on the plea that the existing generation is only bound to pay the debts of its predecessors from the assets it has received from them, and not from the produce of its own industry. But has no one received anything from previous generations except those who have succeeded to property? Is the whole difference between the earth as it is, with its clearings and improvements, its roads and canals, its towns and manufactories, and the earth as it was when the first human being set foot on it, of no benefit to any but those who are called the owners of the soil? Is the capital accumulated by the labour and abstinence of all former generations, of no advantage to any but those who have succeeded to the legal ownership of part of it? And have we not inherited a mass of acquired knowledge, both scientific and empirical, due to the sagacity and industry of those who preceded us, the benefits of which are the common wealth of all? Those who are born to the ownership of property have, in addition to these common benefits, a separate inheritance, and to this difference it is right that advertence should be had in regulating taxation. It belongs to the general financial system of the country to take due account of this principle, and I have indicated, as in my opinion a proper mode of taking account of it, a considerable tax on legacies and inheritances. Let it be determined directly and openly what is due from property to the state, and from the state to property, and let the institutions of the state be regulated accordingly. Whatever is the fitting contribution from property to the general expenses of the state, in the same and in no greater proportion should it contribute towards either the interest or the repayment of the national debt.
This, however, if admitted, is fatal to any scheme for the extinction of the debt by a general assessment on the community. Persons of property could pay their share of the amount by a sacrifice of property, and have the same net ​income as before; but if those who have no accumulation 1?, but only incomes, were required to make up by a single payment the equivalent of the annual charge laid on them by the taxes maintained to pay the interest of the debt, they could only do so by incurring a private debt equal to their share of the public debt; while, from the insufficiency, in most cases, of the security which they could give, the interest would amount to a much larger annual sum than their share of that now paid by the state. Besides, a collective debt defrayed by taxes, has over the same debt parcelled out among individuals, the immense advantage, that it is virtually a mutual insurance among the contributors. If the fortune of a contributor diminishes, his taxes diminish; if he is ruined, they cease altogether, and his portion of the debt is wholly transferred to the solvent members of the community. If it were laid on him as a private obligation, he would still be liable to it even when penniless.
When the state possesses property, in land or otherwise, which there are not strong reasons of public utility for its retaining at its disposal, this should be employed, as far as it will go, in extinguishing debt. Any casual gain, or godsend, is naturally devoted to the same purpose. Beyond this, the only mode which is both just and feasible, of extinguishing or reducing a national debt, is by means of a surplus revenue.
§ 3.The desirableness, per se, of maintaining a surplus for this purpose, does not, I think, admit of a doubt. We sometimes, indeed, hear it said that the amount should rather be left to "fructify in the pockets of the people." This is a good argument, as far as it goes, against levying taxes unnecessarily for purposes of unproductive expenditure, but not against paying off a national debt. For, what is meant by the word fructify? If it means anything, it means productive employment; and as an argument against taxation, we must understand it to assert, that if the amount were left with the people they would save it, and convert it into capital. ​It is probable, indeed, that they would save a part, but extremely improbable that they would save the whole: while if taken by taxation, and employed in paying off debt, the whole is saved, and made productive. To the fundholder who receives the payment it is already capital, not revenue, and he will make it "fructify," that it may continue to afford him an income. The objection, therefore, is not only groundless, but the real argument is on the other side: the amount is much more certain of fructifying if it is not "left in the pockets of the people."
It is not, however, advisable in all cases to maintain a surplus revenue for the extinction of debt. The advantage of paying off the national debt of Great Britain, for instance, is that it would enable us to get rid of the worse half of our taxation. But of this worse half some portions must be worse than others, and to get rid of those would be a greater benefit proportionally than to get rid of the rest. If renouncing a surplus revenue would enable us to dispense with a tax, we ought to consider the very worst of all our taxes as precisely the one which we are keeping up for the sake of ultimately abolishing taxes not so bad as itself. In a country advancing in wealth, whose increasing revenue gives it the power of ridding itself from time to time of the most inconvenient portions of its taxation, I conceive that the increase of revenue should rather be disposed of by taking off taxes, than by liquidating debt, as long as any very objectionable imposts remain. In the present state of England, therefore, I hold it to be good policy in the government, when it has a surplus of an apparently permanent character, to take off taxes, provided these are rightly selected. Even when no taxes remain but such as are not unfit to form part of a permanent system, it is wise to continue the same policy by experimental reductions of those taxes, until the point is discovered at which a given amount of revenue can be raised with the smallest pressure on the contributors. After this, such surplus revenue as might arise from any further increase of the produce of the ​taxes, should not, I conceive, be remitted, but applied to the redemption of debt. Eventually, it might be expedient to appropriate the entire produce of particular taxes to this purpose; since there would be more assurance that the liquidation would be persisted in, if the fund destined to it were kept apart, and not blended with the general revenues of the state. The succession duties would be peculiarly suited to such a purpose, since taxes paid as they are, out of capital, would be better employed in reimbursing capital than in defraying current expenditure. If this separate appropriation were made, any surplus afterwards arising from the increasing produce of the other taxes, and from the saving of interest on the successive portions of debt paid off, might form a ground for a remission of taxation.
It has been contended that some amount of national debt is desirable, and almost indispensable, as an investment for the savings of the poorer or more inexperienced part of the community. Its convenience in that respect is undeniable; but (besides that the progress of industry is gradually affording other modes of investment almost as safe and un-troublesome, such as the shares or obligations of great public companies) the only real superiority of an investment in the funds consists in the national guarantee, and this could be afforded by other means than that of a public debt, involving compulsory taxation. One mode which would answer the purpose, would be a national bank of deposit and discount, with ramifications throughout the country; which might receive any money confided to it, and either fund it at a fixed rate of interest, or allow interest on a floating balance, like the joint stock banks; the interest given being of course lower than the rate at which individuals can borrow, in proportion to the greater security of a government investment; and the expenses of the establishment being defrayed by the difference between the interest which the bank would pay, and that which it would obtain, by lending its deposits on mercantile, landed, or other security. There are no insuperable objections ​in principle, nor, I should think, in practice, to an institution of this sort, as a means of supplying the same convenient mode of investment now afforded by the public funds. It would constitute the state a great insurance company, to insure that part of the community who live on the interest of their property, against the risk of losing it by the bankruptcy of those to whom they might otherwise be under the necessity of confiding it.