Small Side Incomes, Clean Records: Making Sense of the UK Trading Allowance
Photo: John Sutton, CC BY-SA 2.0, via Wikimedia Commons
Extra income has become a normal part of many UK households' finances. A teacher may sell handmade goods online; a retiree may take on occasional proofreading; a parent may run weekend gardening jobs. The £1,000 trading allowance is designed for precisely this kind of small-scale activity. It is useful, but it is also widely misunderstood. The allowance is not a tax-free profit threshold and it is not a blanket exemption from record-keeping. Used properly, it can simplify a tax return. Used carelessly, it can lead to an unnecessary bill or a reporting error.
What the trading allowance covers
For the 2026/27 tax year, an individual may deduct a £1,000 trading allowance from gross income from certain trading and miscellaneous activities. It is available to individuals, not companies. It is a single allowance for the tax year across relevant sources, not £1,000 per hobby or per platform.
The allowance can apply to income from self-employment, casual trading and certain miscellaneous activities. It does not apply to wages, pensions, savings interest or dividends. Income from property is covered by a separate property allowance, not the trading allowance.
If gross income from the relevant activity is £1,000 or less, the allowance generally means no tax is due and no Self Assessment registration is needed, provided there is no other reason to file a return. If gross income exceeds £1,000, the allowance may be claimed instead of actual allowable expenses. The key point is that it is an alternative to expenses, not an addition to them. You cannot claim both the £1,000 allowance and deduct expenses for the same activity. Using the allowance also cannot create a loss.
Gross receipts, not profit
The £1,000 test is based on gross receipts before costs. This is where many households trip up. A crafter who sells £1,100 of candles and pays £180 for wax, packaging and postage has gross receipts of £1,100, not £920. The activity is above the threshold even though the profit is modest.
Once gross receipts exceed £1,000, the practical question is whether to claim the allowance or to deduct allowable expenses. The comparison is usually straightforward. If allowable expenses are less than £1,000, the allowance will often reduce taxable profit more. If allowable expenses are more than £1,000, claiming expenses will often be better.
Consider a freelance copy-editor who receives £1,400 in a tax year and spends £220 on software and reference books. Claiming the allowance leaves £400 taxable. Claiming expenses leaves £1,180 taxable. The allowance is the better route. Now consider an online reseller with £2,600 of gross sales and £1,700 of allowable costs. The allowance would leave £1,600 taxable; expenses would leave £900 taxable. Here, expenses are better.
The comparison should be made before filing, not after a deadline has passed. It is also worth checking whether the activity is genuinely trading. Selling a few personal possessions is not usually a trade, but buying goods to resell, making items to order or providing services regularly may be. The distinction matters because the allowance applies to trading and certain miscellaneous income, not to every receipt that arrives in a bank account.
When you need to tell HMRC
If gross trading receipts exceed £1,000, you generally need to register for Self Assessment by 5 October after the end of the tax year. For 2026/27, that deadline is 5 October 2027. The return and payment deadlines follow on 31 January 2028.
If gross receipts are £1,000 or less, you generally do not need to register or file solely because of that income. If you already complete a Self Assessment return for another reason, the income should be handled correctly within that return and the allowance claimed where beneficial. A common mistake is to assume that because no tax is due, no records are needed. HMRC can still ask questions, and a simple sales log is far easier to produce than a reconstructed bank statement.
Common record-keeping mistakes
Several errors recur. The first is treating the £1,000 allowance as a profit threshold rather than a gross income threshold. The second is mixing business and personal spending in one account, which makes it difficult to prove gross receipts and expenses. The third is overlooking platform fees, postage, refunds or multiple sales channels when adding up income.
Another mistake is assuming that the allowance covers rental income or employment income. It does not. A further error is failing to keep receipts when claiming expenses instead of the allowance. If expenses are claimed, evidence is needed. If the allowance is claimed, income records should still be kept.
A simple record routine
A monthly spreadsheet is enough for many small side projects. Record the date, customer or platform, gross amount, refunds, platform fees, postage and other costs. Keep the corresponding bank or payment-platform statements. If expenses are being claimed, retain receipts and invoices. Records should generally be kept for five years after the 31 January submission deadline.
The allowance is a useful simplification for genuinely small activities. It is not a reason to be casual about the figures. A short monthly routine, a clear comparison between expenses and the allowance, and a note of the filing deadline will keep most households on the right side of the rules.
