Sole Trader Allowable Expenses: What You Can Claim in the UK.

Running a business comes with costs. If you are a sole trader, claiming the right allowable expenses can reduce your taxable profit and help you pay the correct amount of tax. The key is to separate business spending from personal spending and keep records to support your claims.

What are allowable expenses for a sole trader?

Allowable expenses are qualifying business costs deducted from your income when calculating taxable profit for Self Assessment.

For example, if your income is £40,000 and you have £10,000 of allowable expenses, your profit before other tax adjustments is £30,000. An expense does not give you its full cost back; it reduces the profit on which tax is calculated.

If something has both business and personal use, you can claim only the business portion. Money you take out of the business for yourself is not a business expense.

Common sole trader business expenses

Office, phone and software. Stationery, business phone use, accounting software and website hosting may qualify. If you also use your phone or internet at home, work out a reasonable business share.

Travel and vehicles. Qualifying business travel can include train fares, parking, vehicle running costs and accommodation for work trips. Personal journeys, fines and ordinary travel between home and a regular workplace are not allowable. For a vehicle, you may be able to claim simplified mileage rates instead of actual running costs.

Working from home. You may be able to claim a reasonable business proportion of household costs, such as heating, electricity, rent or mortgage interest. Alternatively, HMRC offers a simplified flat rate if you work from home for at least 25 hours in a month.

Stock, materials and subcontractors. Goods bought for resale, materials used on jobs and subcontractor payments can be business costs. Recording them against each job also helps you see whether the work is profitable.

Staff, professional fees and insurance. Employee wages, relevant employer costs, business accountancy fees, bank charges and business insurance can generally be claimed, subject to the usual rules.

Marketing and training. Advertising, website costs and training related to your existing business may qualify. Entertaining clients generally does not, even if you discuss business over a meal.

What about tools, equipment and vehicles?

The tax treatment depends on what you buy and whether you use cash basis or traditional accounting.

Under cash basis, most equipment bought and kept for the business is normally claimed as an allowable expense. A business car is treated differently and may qualify for capital allowances. Under traditional accounting, capital allowances may apply to equipment, machinery and vehicles.

If you also use an item personally, you must exclude the private-use portion. It is sensible to check the treatment of a significant purchase before including it in your tax return.

Can you claim expenses and the £1,000 trading allowance?

You generally choose between claiming your actual allowable expenses and using the £1,000 trading allowance against your trading income. You cannot claim both against the same income.

If your actual expenses are more than £1,000, claiming them may be more beneficial. The right choice depends on your circumstances.

Keep records throughout the year

Save invoices, receipts and mileage records as you go. Good sole trader bookkeeping makes your Self Assessment tax return easier, helps you identify expenses you might otherwise miss and gives you a clearer view of cash flow.

Need help with sole trader expenses or Self Assessment? Vau Consult supports small businesses with bookkeeping, expense records and tax return preparation. Get a quote to discuss what your business needs.

This article provides general information. Whether a particular cost is allowable depends on your circumstances and accounting method.