Side hustle tax UK 2026: the £1,000 trading allowance, when Vinted and eBay report you to HMRC, and the difference between being reported and owing tax.
Two things happened to side hustles in the last couple of years and people keep confusing them. Vinted and eBay started sending HMRC information about sellers. And nothing at all changed about when you owe tax. Those are separate facts, and the gap between them is where all the panic lives.
So here is the side hustle tax position for 2026: three different thresholds that get mixed up constantly, which one actually creates a tax bill, and what to do if you have crossed it.
Almost every anxious question about side hustle tax comes from treating these as one rule. They are not.
Number three is the one that sends people into a spin, and it is the only one of the three that has no direct tax consequence at all.
This is the question to answer first, because if the answer is no, the other two barely matter.
GOV.UK puts it plainly. To pay tax on goods or services you sell online, you must either be trading or making a capital gain. You are unlikely to pay tax if you sell personal items from your home, like the contents of a loft or garage. If you buy or make goods to sell at a profit, you are likely to be trading and will have to pay tax on your profits.
The dividing line is intention at the point you acquired the thing.
Worked example. You clear your wardrobe and sell 60 items on Vinted for £1,200 over the year. You bought those clothes to wear. You are disposing of personal possessions, not running a business. You have sailed past the platform reporting threshold, Vinted will send HMRC your details, and you owe nothing.
Now change one fact. You start buying job lots of clothing at car boot sales specifically to resell. Same platform, same £1,200, completely different answer. You are trading from the first item.
Most people’s side hustles are obvious once you ask the question that way. The genuinely hard cases are things like a hobby that grew, and there the honest test is whether you are now acquiring stock with the intention of selling it.
If you are trading, this is the line that matters.
You must send a tax return if you were self-employed as a sole trader and earned more than £1,000, before taking off anything you can claim tax relief on. Turnover, not profit. It catches people out every year.
Two details that are not obvious from the number itself.
It is one allowance across everything. You get a single £1,000 tax-free trading allowance per tax year. Dog walking, Etsy sales, a bit of freelance copywriting and a Deliveroo shift all count towards the same £1,000, not one each.
It is a choice, not just a threshold. If your trading income is over £1,000, you can either deduct your actual allowable expenses or deduct the flat £1,000 allowance instead. You take whichever is larger, and you cannot take both.
Worked example. You buy and resell at car boots. Income £4,500 across 2025/26, costs of £1,800 for stock, postage and platform fees. You already have a day job that uses your full personal allowance.
Actual expenses win by £160 here. Flip it around, if your costs had been £400, the allowance would have won. Run both numbers, always.
No Class 4 National Insurance on that £2,700, because Class 4 only starts on self-employed profits above £12,570. For the record it is 6% between £12,570 and £50,270 and 2% above in 2026/27, and Class 2 is treated as paid once profits reach £7,105, so most small side hustles pay no National Insurance at all.
One more: if your day job already pushes you into the 40% band, your side hustle profit is taxed at 40% from the first pound, because it stacks on top. Same £2,700 of profit, £1,080 of tax.
New rules started on 1 January 2024. UK digital platform operators collect seller details each year and report them to HMRC by the following January. Information collected during 2026 goes to HMRC by 31 January 2027.
Your details are not reported if you both:
Go over either and you are in the report. This covers the platforms you would expect: eBay, Vinted, Etsy, Airbnb, Uber, Deliveroo and anything else that takes a cut for connecting you to a customer.
Here is what the report is, and what it is not. HMRC’s guidance says directly that a platform reporting your details does not automatically mean you owe tax, and that the information is meant to help you keep track of your earnings. The platform has to send you a copy of exactly what it sent HMRC: your total earnings on that platform for the calendar year, net of fees, commission and any taxes the platform deducted, broken down by quarter.
Platform reports run on the calendar year, 1 January to 31 December. Your tax obligation runs on the tax year, 6 April to 5 April. They do not line up, and HMRC says so: if you do need to report income, you need to work out your income for the tax year.
Practically this means you cannot just copy the figure off your platform statement into your tax return. You need the underlying transactions re-cut to 6 April dates. Download the detail while the platform still has it.
If you are trading and your income for 2025/26 went over £1,000, the sequence is short.
Late filing starts at an automatic £100 even if your bill is zero, then £10 a day after three months up to £900. Our guide to who has to file a tax return has the full penalty schedule, and the HMRC Self Assessment walkthrough covers the form itself.
Changed this year: nothing in the rules above. The £1,000 trading allowance is unchanged, the platform reporting thresholds are unchanged, and the definition of trading is unchanged.
Coming, but not here yet: the government has announced an intention to raise the Self Assessment reporting threshold for trading income from £1,000 to £3,000 gross, which HMRC estimates would take around 300,000 people out of tax returns entirely, with roughly 90,000 of them having no tax to pay at all. It is not in force. For the 2025/26 return the line is still £1,000, and announcements are not law until they are.
Worth noting too that the personal allowance stays at £12,570 and the higher rate threshold at £50,270 for 2026/27, both frozen. A side hustle that pushes your total income over £50,270 gets taxed at 40% on the part above, and frozen thresholds mean more people reach that line every year.
If your side hustle income moves around month to month and you want to know what you should actually be putting aside, the NetPay app tracks variable income alongside your PAYE pay and shows the take-home figure after the tax you will eventually owe. Free to download.
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Only if you are trading and your income from it goes over the £1,000 trading allowance, or if you make a capital gain. Selling personal items you originally bought to use, like clothes from your own wardrobe, is not trading and generally produces no tax however much you sell.
Platforms report sellers who make 30 or more sales of goods in a calendar year, or who receive 2,000 euros or more, which is about £1,700. Below both of those they do not report you. A report is a data transfer, not a tax bill, and the platform must send you a copy of whatever it sent HMRC.
Turnover. The test is more than £1,000 of income before taking off anything you can claim tax relief on. You get one £1,000 allowance per tax year in total, not one per side hustle, so dog walking and Etsy sales are added together.
Register for Self Assessment by 5 October following the end of the tax year in which your trading income first went over £1,000. For income earned in 2025/26, that deadline is 5 October 2026. Your UTR arrives by post in about two weeks, so late registration is what usually causes the trouble.
Want to see your actual take-home pay?
NetPay UK works out your real net pay after tax, NI, pension and salary sacrifice, for hourly, shift and variable-income workers. Free to download.
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A note on financial advice: NetPay UK calculates take-home pay based on official HMRC tax rules. This article reflects rules in force at the time of publication (19 September 2026). Tax rules change. For complex situations, consult a qualified UK accountant or visit gov.uk/income-tax.
