There are many expenses that can be claimed through your business, and these very much depend upon the nature and structure of your business. To qualify as a tax-deductible expense, it must have been necessary and incurred wholly and exclusively for the purpose of the trade, and a full record of the expenditure must be kept. Valid areas of expenditure include office costs, motor and travel expenses, staff costs, marketing and advertising, legal and professional costs, bank charges and training.  But remember, the expenditure must be related to your business. For example, you can’t claim the cost of a five-week course in beauty therapy if your trade is architecture.