Side hustle tax: when you actually owe it

Selling your own second-hand belongings is not taxable, however many sales you make and whatever message the app sends you. Tax starts when you are trading, and the first £1,000 of that is covered anyway. The £3,000 figure being reported as a side-hustle tax cut is a change to the paperwork, and the tax-free allowance behind it is staying at £1,000.

Last updated: 4 October 2026

What actually makes the money taxable

Two different things get muddled together every January, and separating them answers most of the question. Clearing out your own wardrobe is disposing of your own property. Buying or making things in order to sell them is trading. The first is never taxable income. The second is, once it passes £1,000 a year.

That line is about intention at the point you got the item, not about how much you sold or how organised you look doing it. Someone who sells 200 items of their own outgrown clothing owes nothing. Someone who buys £40 of stock at a car boot sale, lists it at £150 and does that every weekend is trading from the first sale.

The £1,000 trading allowance

Once you are trading, the first £1,000 of income is covered by the trading allowance. Below £1,000 there is nothing to report and no return to file. Above it you register for Self Assessment and pay tax on the profit.

The allowance is gross income, before costs, and it replaces your expenses rather than sitting alongside them. You claim the £1,000 or your real costs, whichever leaves you better off, and never both. If you turned over £4,000 and spent £500, claiming the allowance leaves £3,000 of taxable profit instead of £3,500. If you spent £1,500, claim the costs instead.

Being reported is not owing tax

Since January 2024 online platforms have had to pass seller data to HMRC once you cross 30 sales or around £1,700 in a calendar year. That covers Vinted, eBay, Etsy, Depop, Airbnb, Uber and the rest, which is why so many people got a request for their National Insurance number out of nowhere.

The thresholds are reporting thresholds. They decide when a platform hands over your details, and they have no bearing on whether you owe anything. The underlying tax rules did not change in January 2024. A student who sells 45 items of their own old clothing gets reported and owes nothing at all.

Try the calculator

Self-employed tax calculator

Put in what the hustle took, what it cost you and what your job pays, and see the tax, the National Insurance and the two dates HMRC wants it on.

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What you pay on top of a job

Side-hustle profit goes on top of your wages, so it is taxed at your marginal rate from the first pound. Your job has already used your Personal Allowance, which means there is no tax-free slice left for the hustle. A basic-rate employee pays 20% on the profit, a Scottish intermediate-rate employee pays 21%, and anyone the extra income tips over a threshold pays the higher rate on the part that crosses it.

National Insurance behaves differently and catches people out in the helpful direction. Class 4 starts at £12,570 of self-employed profit, and your wages do not count towards that figure. A £35,000 salary with £6,500 of profit carries no Class 4 at all. Even at £13,000 of profit only the £430 above the threshold is charged, which comes to £26.

Here is the same £35,000 day job with three sizes of hustle, after costs.

Profit after costs	£3,000	£6,500	£13,000
Income tax, England & Wales	£600	£1,300	£2,600
Class 4 National Insurance	£0	£0	£26
Total, England & Wales	£600	£1,300	£2,626
Total, Scotland	£630	£1,365	£3,667
You keep, England & Wales	£2,400	£5,200	£10,374

2026/27 rates, on top of a £35,000 salary. Figures from the self-employed tax calculator.

The Scottish jump at £43,663

The last two rows of that table diverge sharply at £13,000, and the reason is worth understanding before you take on more work. Trading profit is non-savings income, so Scottish taxpayers pay Scottish rates on it. Scotland's higher rate starts at £43,663 against £50,271 in the rest of the UK, so a side hustle on a middling salary crosses it £6,608 earlier.

A £35,000 salary plus £13,000 of profit is £48,000 of total income. In England that is all still basic rate. In Scotland the top slice is in the 42% band, which is why the bill is £3,667 rather than £2,626. The same hustle costs £1,041 more for living 400 miles north.

The rate on your next pound of profit is where it gets strange. National Insurance is reserved to Westminster, so Class 4 is identical across the UK and its upper limit is pinned to the UK threshold of £50,270. A Scottish taxpayer in that window is therefore paying 42% income tax and 6% Class 4 on the same pound, a marginal rate of 48%. The identical profit in England attracts 20% and 6%, which is 26%. Twenty-two points apart, on the same work.

A smaller hustle, same problem

It does not take a big side income. On a £40,000 salary, £8,000 of profit costs £1,600 in England and £2,591 in Scotland. There is no National Insurance either way, because £8,000 is under the £12,570 Class 4 floor. The whole £991 gap is the Scottish higher rate catching income that is still basic rate south of the border.

The £3,000 rule, reported wrongly almost everywhere

In March 2025 the government announced that the Self Assessment reporting threshold for trading income would rise from £1,000 to £3,000, taking around 300,000 people out of filing a tax return. It has been widely written up as a tax cut for side hustlers. It is a change to how you report, and the amount you can earn tax-free stays exactly where it is.

The trading allowance stays at £1,000. It is not rising to £3,000 and was never part of the announcement.
Income between £1,000 and £3,000 stays taxable. You will declare it through a simpler online service rather than a full return. The tax does not go away, the form does.
There is no confirmed start date. The commitment was to deliver it "within this parliament". Plenty of sites state April 2027 as though it were settled. HMRC has not named a tax year, so plan on the current rules until it does.
About 90,000 of the 300,000 will owe nothing. The rest will still pay, through the new service.

Registering, and the two dates

Once you pass £1,000 you have until 5 October after the end of the tax year to register for Self Assessment, then until the following 31 January to file and pay. For profit earned in 2026/27 that means registering by 5 October 2027 and paying by 31 January 2028. Both dates are in the UK tax deadlines guide.

If the bill reaches £1,000, HMRC also asks for payments on account: half the bill again on 31 January towards next year, and another half on 31 July. In a first year that means finding 150% of the tax in one go. Most side hustles stay under the £1,000 trigger, and if more than 80% of your tax already comes out through PAYE you are exempt anyway, which covers a lot of people with a day job.

Three edges worth knowing

Class 2 and your State Pension

Class 2 National Insurance stopped being compulsory in April 2024. At or above £7,105 of profit it is treated as paid, so you get a qualifying State Pension year for nothing. Below that you can pay it voluntarily at £3.65 a week, which is the cheapest way to buy a year and worth considering if you have gaps in your record.

The one case where selling your own things is taxed

Capital Gains Tax can apply to a single personal possession sold for £6,000 or more at a profit, such as jewellery, art, antiques or a set of items sold together. Clothing and ordinary household goods never get near it. Cars are exempt, as is anything with a limited lifespan.

The £1,000 is per person, not per platform

The trading allowance covers all your trading activity added together. A bit of Etsy, some weekend dog walking and a few Depop sales count as one total against one £1,000, rather than £1,000 each. The same goes for the £12,570 Class 4 floor.

If the hustle has grown enough that any of this is a live question, put your real figures through the self-employed tax calculator and compare the result against what a few more hours at your day job would leave you.

Frequently asked questions

Do I have to pay tax on my side hustle?

Only once your self-employed income passes £1,000 in a tax year. Below that the trading allowance covers it and there's nothing to report. Above it you register for Self Assessment and pay tax on the profit at your marginal rate, because your job has already used up your Personal Allowance.

Do I pay tax on selling my own clothes on Vinted or eBay?

No. Selling your own second-hand belongings is not trading and is not taxable, however many items you sell or however much they come to. The tax rules did not change when the platform reporting rules came in. You only cross into trading if you buy or make things in order to sell them.

Why has Vinted or eBay asked for my National Insurance number?

Since January 2024 platforms have had to report sellers who pass 30 sales or around £1,700 in a calendar year, so they collect your details to do that. Being reported is a data exercise and says nothing about whether you owe tax. Most people caught by it are selling their own belongings and owe nothing.

Is the trading allowance going up to £3,000?

No. The £3,000 figure is a Self Assessment reporting threshold, and the tax-free trading allowance stays at £1,000. Income between the two remains taxable. What changes is the paperwork: you will declare it through a simpler online service instead of a full tax return. The government announced this in March 2025 and committed only to doing it within this parliament, so there is no confirmed start date.

Do I pay National Insurance on a side hustle?

Usually not. Class 4 National Insurance starts at £12,570 of self-employed profit, and your wages do not count towards that figure, so a side hustle has to be substantial before any NI is due. Class 2 stopped being compulsory in April 2024. Below £7,105 of profit you can pay it voluntarily at £3.65 a week to protect a State Pension year.

Do Scottish taxpayers pay more on a side hustle?

Yes, from £29,526 of total income upwards. Trading profit is taxed at Scottish rates because income tax is devolved. The sharpest case is a side hustle that carries your total income past £43,663, where Scotland's higher rate starts: a £35,000 salary with £13,000 of profit costs about £3,667 in Scotland against £2,626 in England, and the rate on the next pound is 48%.