The trading allowance is one of HMRC's simpler tax rules and one of the most practically useful for people with small amounts of self-employed or casual income. If your gross trading income in a tax year is £1,000 or less, you pay no tax and do not need to register as self-employed or file a Self Assessment return on that basis.
Updated 2026/27 · SoleTraderTaxCalculator.co.uk · Editorial standards · Methodology
The trading allowance of £1,000 per tax year applies to income from self-employment, casual trading, or providing services for payment — selling homemade goods, occasional freelance work, renting out equipment, gig economy income, and similar. It applies to the gross income from the activity, not the profit. If you earn £900 from occasional consulting work and have £200 in expenses, your gross income is £900 — within the allowance, no tax, no registration.
There is also a separate £1,000 property income allowance for rental income, which works similarly. The two allowances are independent — you can claim both in the same year. However, if you earn income as an employee or through PAYE, the employment income is not covered by the trading allowance. The allowance applies specifically to trading and casual income.
The allowance does NOT apply to income received from your employer as a PAYE employee, income from a connected party where the relationship creates a tax avoidance risk, or income from property if you are already using the property income allowance. It also does not reduce the gross income figure for the purposes of determining whether you need to register as self-employed — if gross trading income exceeds £1,000, you must register regardless of whether you choose to use the allowance.
Once your gross trading income exceeds £1,000, you have a choice in how you calculate taxable profit on your Self Assessment return. Option one: claim the trading allowance and deduct £1,000 from your gross income instead of actual expenses. This is simpler — no need to track receipts or apportion costs. Taxable profit = gross income minus £1,000. Option two: deduct actual allowable business expenses in the normal way. Taxable profit = gross income minus actual expenses.
You can choose whichever method produces the better outcome, but you must be consistent within a single return for the same trading activity — you cannot mix the two methods for the same source of income. The choice can be made differently from year to year if circumstances change.
You cannot claim the trading allowance and actual expenses simultaneously for the same income source. If you choose the trading allowance, that is your full deduction. If your actual expenses are higher than £1,000, actual expenses will produce a lower taxable profit — so the choice has a direct impact on your tax bill.
If your gross income is £3,000 and actual expenses are £600: trading allowance gives taxable profit of £2,000; actual expenses give taxable profit of £2,400. Trading allowance is better — saves £400 in taxable profit, approximately £80 in tax at basic rate.
If your gross income is £5,000 and actual expenses are £1,800: trading allowance gives taxable profit of £4,000; actual expenses give taxable profit of £3,200. Actual expenses are better — saves £800 in taxable profit, approximately £208 in tax at combined income tax and Class 4 NI.
The break-even point is simply whether your actual business expenses exceed £1,000. If your costs are higher than £1,000, claim actual expenses. If your costs are lower than £1,000, claim the trading allowance. For very small income levels where expenses are modest, the trading allowance also saves the administrative effort of tracking and documenting every cost.
If your gross trading income is £1,000 or less, you do not need to register as self-employed or file a Self Assessment return purely on account of that income. If you have other reasons to file — employment income above £100,000, rental income, foreign income — you may still need to file, but you simply do not report the trading income at all (it is covered by the allowance).
If your gross trading income exceeds £1,000 and you choose to use the trading allowance, you report it in the self-employment section of your SA100 return. On the SA103 self-employment pages, you enter your gross turnover and tick the box to apply the trading allowance. HMRC's online filing system handles the deduction automatically when you indicate the allowance applies.
If you choose actual expenses instead, you complete the expense categories on the SA103 in the normal way — there is no interaction with the trading allowance. HMRC's system will not apply the allowance automatically if you have entered actual expenses, so you must actively choose one or the other.
Yes. It is a per-tax-year allowance. You get £1,000 each year regardless of what you claimed in previous years.
No. It is an alternative to actual expenses for the same income source. You choose one or the other — whichever produces the lower taxable profit.
There is a separate £1,000 property income allowance. You can claim the trading allowance on self-employment income and the property allowance on rental income independently in the same tax year — they do not interact.
No. The £1,000 trading allowance is a tax relief, not a registration exemption above that threshold. Once gross income exceeds £1,000, you must register as self-employed by 5 October after the end of the relevant tax year.
If your gross income is £1,000 or below, no action is required. If it exceeds £1,000 and you are filing Self Assessment, you indicate the allowance on the SA103 self-employment pages when completing your return.
The sole trader tax calculator turns this guidance into a concrete monthly take-home and tax reserve estimate, based on 2026/27 HMRC rates. Enter taxable profit — not turnover.