HMRC Side-Hustle Tax Rules: Vinted, eBay & Etsy

You sold a few bags of old clothes on Vinted, flipped some trainers on eBay, or built up a little Etsy shop on the side. Then the headlines hit: "HMRC is coming for side hustles." Now you're not sure if you owe tax, need to register for anything, or can carry on as you were.

Here's the calm version. Since 1 January 2024, online marketplaces have had to collect and share seller data with HMRC. That changed what HMRC can see. It did not change the tax rules themselves. Whether you owe tax still comes down to one question: are you selling your own unwanted stuff, or are you running a business?

This guide explains the difference in plain English, walks through the £1,000 trading allowance, shows you a worked example, and tells you exactly when you need to tell HMRC. It's written for casual sellers and growing side hustles alike.

What are HMRC's side-hustle tax rules?

There isn't a separate "side-hustle tax". The phrase is shorthand for the normal rules on trading income, applied to people who sell through apps and marketplaces.

Two things matter:

1. The tax rules. If you're trading (buying or making things to sell at a profit, or providing a service), the profit is taxable income. This has always been true. Selling your own unwanted possessions is not trading, so it usually isn't taxed.
2. The reporting rules. From 1 January 2024, UK digital platforms have to gather information about their sellers and report it to HMRC once a year. The platform that hosts you collects the data, not you.

So the new bit is visibility, not liability. HMRC can now match what you sold against what you declared. If you were already within the rules, nothing changes. If you've been running a business and not declaring it, the data makes that much easier to spot.

What do Vinted, eBay and Etsy now report to HMRC?

Under the digital platform reporting rules, marketplaces collect seller details and total earnings, then send them to HMRC by 31 January following the calendar year. For example, sales during the 2024 calendar year were reported to HMRC by 31 January 2025.

For an individual seller, the platform reports your name, address, date of birth, your tax identification number (your National Insurance number in the UK), and your gross earnings for the year, broken down by quarter and after deducting platform fees.

There's an exemption for very small sellers of goods. A platform does not have to report you if, in the calendar year, you both:

• made fewer than 30 sales of goods, and
• received less than 2,000 euros (about £1,700) for those sales.

You have to meet both conditions to be exempt. Sell 31 small items, or take more than the euro limit, and you cross the reporting line even if you owe no tax at all.

That last point is worth repeating: being reported to HMRC does not mean you owe tax. The platform reports gross sales over a calendar year. Your tax position depends on whether you're trading and on your profit over the tax year (6 April to 5 April). They're different questions on different calendars.

Am I selling personal items or trading?

This is the line that decides everything. HMRC's guidance puts it simply: if you're selling personal possessions you no longer want, you probably don't pay Income Tax. If you buy or make things with the intention of selling them at a profit, you're probably trading.

In practice, the questions we ask a new client usually settle it quickly:

• Why did you buy the item? A coat you wore and outgrew is a possession. A coat you bought specifically to resell is stock.
• Are you making or sourcing things to sell? Hand-made candles on Etsy, or trainers bought in bulk to flip, point firmly to trading.
• How often and how organised? Regular, repeated sales with listings, branding and reinvested profits look like a business. A one-off clear-out of your wardrobe does not.

These are the "badges of trade" HMRC weighs up. No single one is decisive. A keen declutter that runs to dozens of items is still not trading if it's genuinely your own used belongings. A handful of high-margin flips you sourced to sell can be trading even if the volume is low.

If you sell pre-loved clothes on Vinted that you once wore, that's almost always personal. If you're an eBay reseller or an Etsy maker, you're trading. Our accounting support for ecommerce sellers goes deeper into getting this right across each platform.

What is the £1,000 trading allowance?

If you are trading, you get a £1,000 tax-free trading allowance each tax year. This is HMRC's "trading and miscellaneous income allowance", and it's a single £1,000 that covers all your casual self-employed and miscellaneous income combined, not £1,000 per platform.

How it works:

• If your total trading income (your gross sales, before expenses) is £1,000 or less in the tax year, it's covered by the allowance. You don't have to tell HMRC or pay tax on it.
• If your total trading income is more than £1,000, you need to tell HMRC. You can then either deduct the £1,000 allowance from your income, or deduct your actual allowable business expenses, whichever leaves you better off. You can't do both.

The allowance is most useful when your costs are low. If you have real expenses (stock you bought to resell, packaging, postage, Etsy listing and transaction fees), claiming actual costs often beats the flat £1,000.

Selling your own personal items doesn't use up this allowance, because it isn't trading income in the first place.

When do I need to tell HMRC and register for Self Assessment?

You need to register for Self Assessment and report your side hustle if your gross trading income for the tax year is more than the £1,000 trading allowance. The key deadlines, all from HMRC's Self Assessment guidance, are:

If 2025/26 is your first year of trading above the allowance, you register by 5 October 2026, file your return by 31 January 2027, and pay any tax by the same date.

A few practical points we see trip people up:

• The trading allowance test is on gross income, not profit. Take £1,400 in sales with £600 of costs, and you've still passed the £1,000 line and need to report, even though your profit is only £800.
• Already in Self Assessment for something else (you're a sole trader, or you have other untaxed income)? Then there's no separate £1,000 grace. Include the side-hustle income on your return.
• Registering and filing is not the same as owing tax. Your personal allowance and the trading allowance may wipe out any bill, but you still have to declare it once you're over the threshold.

Illustrative example: how much tax on side-hustle profit?

Illustrative example. Sam has a full-time job and runs an Etsy shop on the side, making and selling prints. In 2025/26, the Etsy shop takes £9,000 in gross sales. Sam spends £3,000 on materials, packaging, postage and Etsy fees. The day job already uses up Sam's £12,570 personal allowance and keeps Sam well inside the basic-rate band for 2025/26.

Sam compares two ways of working out taxable profit:

Actual expenses win, so Sam declares a profit of £6,000.

Because Sam's employment already uses the personal allowance, the whole £6,000 is taxed at the basic rate of 20% for 2025/26:

• Income Tax: £6,000 × 20% = £1,200

Self-employed profit also attracts Class 4 National Insurance. For 2025/26, Class 4 is charged at 6% on profits between the £12,570 lower profits limit and the £50,270 upper profits limit. Sam's side-hustle profit sits above the lower profits limit once the day-job earnings are taken into account, so the full £6,000 falls within the 6% band:

• Class 4 NIC: £6,000 × 6% = £360

Total tax and NIC on the side hustle: £1,200 + £360 = £1,560. That's about 17% of the £9,000 turnover, leaving Sam with £6,000 profit before tax and £4,440 after.

Keeping receipts for the £3,000 of costs saved Sam tax on an extra £2,000 of profit compared with the flat allowance, worth roughly £520 in Income Tax and NIC. Good records pay for themselves. You can sanity-check your own figures with our self-employed tax calculator.

Do I pay tax when selling my own used items?

Usually not. Selling personal possessions you no longer need is not trading, so there's no Income Tax to worry about, however much you list.

There's one exception, and it's Capital Gains Tax, not Income Tax. If you sell a single personal item for £6,000 or more, you may have a capital gain to consider. This catches things like jewellery, antiques, art or a collectable, not your old jeans and paperbacks, most of which are worth less than you paid and lose value anyway. The £6,000 figure also applies to a set sold to the same buyer, such as a matching set of ornaments.

Even then, a gain is only taxable after your annual exempt amount, which is £3,000 for individuals in 2025/26. Most casual sellers never go near any of this. It mainly matters if you're selling a genuinely valuable one-off.

Side-hustle reporting: a quick decision guide

Run through these steps for the tax year:

1. Are you selling your own used possessions, or buying/making things to sell at a profit? Only the second is trading. Personal sales: stop here, no Income Tax (watch the Capital Gains Tax point, £6,000 or more, for high-value single items).
2. If you're trading, what's your gross income for the tax year? £1,000 or less: covered by the trading allowance, nothing to report. More than £1,000: go to step 3.
3. Register for Self Assessment by 5 October after the tax year ends.
4. Choose the trading allowance or actual expenses, whichever gives the lower taxable profit.
5. File and pay by 31 January after the tax year.

When you're not sure which box you fall into, that's exactly the point to get a quick professional view rather than guess.

Not sure if your side hustle counts as trading, or how to report it? Book a free 20-minute call with a Zmartly accountant. We'll tell you straight whether you need to register, help you claim every expense, and keep your return right. Talk to a Zmartly accountant.

Frequently asked questions

Talk to an e-commerce accountant →