UK Side Hustle Tax Guide (2026/27)

Side hustle trading income in the UK is covered by the £1,000 trading allowance each tax year. Above that, you must file a Self Assessment return and pay Income Tax and, on profit over £12,570, Class 4 National Insurance. Since 1 January 2024 digital platforms have had to report their sellers to HMRC, so platform income is visible to HMRC.

This guide covers the 2026/27 rules: who needs to file, what the trading allowance does, how HMRC tells a hobby from a trade, and four worked examples - the casual Vinted seller, the reseller, the freelance designer and the content creator. Sources are listed at the end of the page.

1. Side hustles and UK tax: the landscape

"Side hustle" is informal shorthand for income outside your main PAYE job: selling on eBay, Vinted, Etsy or Depop; freelance design, copywriting, photography or consulting; letting on Airbnb; driving or delivering through an app; tutoring or dog-walking; creating content online; dealing in cryptoassets. There is no special "side hustle" tax regime. Depending on the facts it is trading income, property income, miscellaneous income, or - if it is not a trade at all - a disposal that may fall under Capital Gains Tax. gov.uk's additional income checker helps you tell which.

The first filter is the £1,000 trading allowance: gross trading income of £1,000 or less in the tax year does not need to be declared. Above that you file Self Assessment and deduct either the allowance or your actual expenses, whichever gives the lower taxable profit. Property income has its own separate £1,000 property allowance; gov.uk says that if you have both types of income you get an allowance for each.

The second filter, since 1 January 2024, is platform reporting. Platforms report seller details and amounts paid to HMRC, except sellers of goods who received 2,000 euros or less (about £1,700) for fewer than 30 sales in the year. Sellers of services, and people renting out property or transport through a platform, are reported whatever the amount. HMRC can compare these reports with tax returns and write to people whose figures do not match.

2. The £1,000 trading allowance, in detail

Per gov.uk:

• Gross trading income of £1,000 or less: covered in full - nothing to declare. HMRC calls this "full relief".
• Gross trading income over £1,000: you file Self Assessment and can deduct the £1,000 allowance instead of actual expenses ("partial relief"). You cannot combine the two.
• The test is on gross income - the total before any allowances or expenses. A seller receiving £1,200 with £400 of postage costs has £1,200 of gross trading income, so the allowance does not cover it and a return is needed.
• The allowance cannot create a loss.
• It cannot be used for trading income from a partnership, or for income from a company or partnership that you or someone connected to you owns, controls or is a partner in, or from your or your spouse's employer.

The allowance option saves keeping a full expense schedule: you take gross receipts and deduct £1,000. A reseller who turned over £2,400 with low real costs reports £1,400 of taxable profit.

The actual-expenses option needs the usual bookkeeping but gives a lower taxable profit when costs are high. A freelance designer turning over £8,000 with £3,500 of software subscriptions, professional indemnity insurance, capital allowances on a laptop and a use-of-home claim is better off claiming the £3,500 (leaving £4,500 taxable) than taking the allowance (leaving £7,000 taxable).

The property allowance works the same way for property income. If you let a furnished room in your only or main home, the separate Rent a Room scheme lets you earn up to £7,500 a year tax-free (£3,750 if the income is shared).

3. Hobby versus trade: the HMRC badges of trade

Not every sale is trading. Selling personal possessions is not trading income, so the trading allowance and Self Assessment rules above do not come into it. HMRC weighs the badges of trade in BIM20205; no single badge decides the question:

1. Profit-seeking motive - supports trading, but is not conclusive on its own.
2. The number of transactions - systematic and repeated transactions support trading.
3. The nature of the asset - could it only be turned to advantage by selling it, or was it for personal enjoyment?
4. Similar trading transactions or interests - transactions like those of an existing trade may themselves be trading.
5. Changes to the asset - was it repaired, modified or improved to sell more easily or for more?
6. The way the sale was carried out - typical of a trader, or a sale to raise cash in an emergency?
7. The source of finance - was money borrowed to buy it, repayable only by selling it?
8. The interval between purchase and sale.
9. The method of acquisition - bought, inherited or given.

Two worked examples on Vinted illustrate the line:

Vinted declutter (not a trade). Hannah cleared her wardrobe and listed 80 items of her own used clothing on Vinted over six months, receiving £450. The items were bought to wear, not to resell; she did not modify or market them; and it was a one-off clear-out. On those facts this is selling personal possessions, not trading, and there is no Income Tax to pay. Because she made 30 or more sales of goods, Vinted would still report her to HMRC - the exception covers only sellers with fewer than 30 sales and 2,000 euros or less - but a report is not a tax bill.

Vinted reseller (a trade). Marcus buys out-of-season clothing in bulk from outlet stores, lists each item with styled photography, and turned over £4,200 in 18 months across 240 sales. Profit motive is present from purchase, the transactions are frequent, items are held for days or weeks, and he sells like a business. This is trading: his gross income is over £1,000, so he files Self Assessment and is taxed on his receipts less allowable expenses (cost of stock, postage, platform fees) or less the trading allowance.

4. Digital platform reporting from 1 January 2024

The UK implemented the OECD model reporting rules for digital platforms through the Platform Operators (Due Diligence and Reporting Requirements) Regulations 2023 (SI 2023/817), in force from 1 January 2024. The EU equivalent is known as DAC7.

Per gov.uk, the rules cover a UK platform that connects sellers to customers to supply goods or services and that holds, or can find out, the amount paid to sellers. It must collect and check information about its sellers and report them to HMRC. A website that only connects buyers and sellers, without knowing what the seller was paid, is not a digital platform for these rules.

The one de minimis: a platform does not need to report a seller who received 2,000 euros or less (about £1,700) for fewer than 30 sales of goods in a year. It does not apply to services, rental of transport or rental of property, so drivers, freelancers and short-let hosts are reported whatever they earn.

If what a platform reports does not match what you declared, HMRC may write to you. Registering late for Self Assessment can bring a failure-to-notify penalty of up to 30% of the tax unpaid for a non-deliberate failure, 70% if deliberate and 100% if deliberate and concealed, before reductions for disclosure (FA 2008 Sch 41 para 6), plus the tax and interest. See section 11 for putting earlier years right.

5. When you must file Self Assessment

gov.uk says you must send a tax return for 2026/27 if, in the tax year:

• you were self-employed as a sole trader and earned more than £1,000 (before expenses);
• you were a partner in a business partnership;
• you had Capital Gains Tax to pay;
• you had to pay the High Income Child Benefit Charge and do not pay it through PAYE;
• you are an off-payroll worker repaying a student or postgraduate loan.

You may also need to send one if you have untaxed income such as rent, tips and commission, savings interest, dividends or foreign income. gov.uk's checker tells you whether you need to file.

Registration deadline: 5 October after the end of the tax year. Filing deadline: 31 January after the end of the tax year online (so the 2026/27 return is due by 31 January 2028), and the tax is due the same day. Late filing penalties: £100, then £10 a day after 3 months (up to £900), then 5% of the tax due or £300, whichever is greater, at 6 and again at 12 months. Late payment: 5% of the tax unpaid at 30 days, 6 months and 12 months, plus interest. If you are in Making Tax Digital for Income Tax, a different points-based regime applies. See the Self Assessment deadlines guide, HMRC penalties guide and Self Assessment step-by-step.

6. Four worked examples

2026/27 figures, England / Wales / Northern Ireland Income Tax bands, no student loan. The Income Tax shown is the extra tax on salary plus side profit compared with salary alone.

Example 1: Casual Vinted seller, £600 a year - nothing to declare

Profile: Sara earns £42,000 in a marketing job. She occasionally sells used clothing and books on Vinted and received £600 across 22 sales in 2026/27.

Analysis: these look like sales of personal possessions, not trading. Even if they were trading, £600 is within the £1,000 trading allowance. Nothing to declare. With fewer than 30 sales of goods and under 2,000 euros received, she is also within the platform reporting exception.

What if she made 35 sales? Vinted would then report her, because the exception needs fewer than 30 sales. If the items were still her own possessions, there would still be no Income Tax to pay.

Example 2: Reseller, £3,000 a year - Self Assessment with the trading allowance

Profile: Tom is a software developer on £55,000. He buys vintage cameras at car boot sales, refurbishes them and resells them on eBay: 2026/27 gross receipts £3,000 across 65 sales, actual costs £900 (stock, fees, postage).

• Trading allowance: £3,000 - £1,000 = £2,000 taxable profit.
• Actual expenses: £3,000 - £900 = £2,100 taxable profit.

The allowance gives the lower profit. His salary is already above the £50,270 higher-rate threshold, so all £2,000 is taxed at 40%: £800 of Income Tax. The profit is below the £12,570 Lower Profits Limit, so no Class 4. Paid through Self Assessment by 31 January 2028.

Example 3: Freelance designer, £8,000 a year - Self Assessment with actual expenses

Profile: Priya earns £24,000 as a part-time marketing assistant and freelances as a graphic designer, billing £8,000 in 2026/27. Allowable costs £3,500: design software £660, capital allowances on a laptop £400, professional indemnity insurance £180, accountancy £600, use of home £312 (the simplified maximum of £26 a month), mileage to client meetings £400, a training course related to her design work £450, other business costs £498.

Claiming actual expenses leaves £4,500 of taxable profit. Salary plus profit (£28,500) stays below £50,270, so it is all taxed at 20%: £900. No Class 4, because £4,500 is below the Lower Profits Limit. Had she taken the allowance instead, she would have paid £1,400 on £7,000 of profit, so claiming expenses saves £500. The self-employed calculator models PAYE plus self-employment income together.

Example 4: Content creator, £25,000 a year - Class 4 NI and payments on account

Profile: Jordan left a £30,000 job in September 2026 to run a YouTube and Patreon channel full-time. 2026/27 gross income £25,000; costs £4,800 (equipment, lighting, editing software, mileage, use of home as studio, accountancy). PAYE pay from April to September: £15,000.

• Taxable profit: £25,000 - £4,800 = £20,200.
• The £12,570 Personal Allowance is used by the PAYE pay; salary plus profit (£35,200) is below £50,270, so the profit is taxed at 20%: £4,040.
• Class 4: 6% x (£20,200 - £12,570) = £458.
• Self Assessment total: about £4,498.

Because more than £1,000 is due through Self Assessment and well under 80% of his tax was paid through PAYE, Jordan must also make payments on account for 2027/28, each half of his 2026/27 bill (about £2,249). In his first year, 31 January 2028 brings the 2026/27 bill plus the first payment on account - about £6,747 - and the second is due 31 July 2028. This first-year double payment is worth planning for.

7. Class 2 and Class 4 National Insurance

2026/27 figures (gov.uk):

• Small Profits Threshold: £7,105. With profits at or above it you are treated as having paid Class 2, so the year counts for State Pension at no cost. Below it you can pay Class 2 voluntarily at £3.65 a week.
• Lower Profits Limit: £12,570. Class 4 starts above this.
• Class 4 main rate: 6% on profits between £12,570 and £50,270.
• Class 4 upper rate: 2% on profits above £50,270.

The Class 4 main rate has been 6% since 2024/25 (it was 9% in 2023/24). Class 4 is worked out on the side-hustle profit itself, not on salary plus profit. So for a higher-rate employee, side profit up to £12,570 costs 40% Income Tax and no NI; profit above that also pays Class 4, although for someone already paying Class 1 on a salary an annual maximum can reduce it (Social Security (Contributions) Regulations 2001, reg. 100). The self-employed calculator handles both income streams together.

8. Trading allowance versus actual expenses: the decision rule

You choose on the Self Assessment return each year; there is no advance election.

• Actual expenses below £1,000: take the trading allowance.
• Actual expenses above £1,000: claim actual expenses.
• Your trading allowance is one £1,000 a year, not £1,000 per platform or per activity.

Allowable expenses (gov.uk) typically include:

• Cost of goods sold - what you paid for stock you then sold.
• Platform fees and commissions, and payment-processing fees.
• Postage and packaging.
• Software subscriptions used for the business, hosting and domain names.
• Equipment - usually claimed through the Annual Investment Allowance; if you use the cash basis, most equipment other than cars is simply deducted. See the capital allowances calculator.
• Use of home as office - simplified rate of £10 a month for 25 or more hours of business work, £18 for 51 or more, £26 for 101 or more; or a share of actual costs.
• Mileage - simplified rate of 55p a mile for the first 10,000 business miles and 25p after; or the business share of actual costs plus capital allowances.
• Professional fees - accountant, trade body subscriptions, professional indemnity insurance.
• Bank charges on a business account.
• Training that improves skills you use in the business or supports it; not training to start a new business or move into an unrelated area.

9. Side hustle while employed: how PAYE and Self Assessment interact

Your employer keeps deducting tax and NI from your salary under your tax code. Nothing is deducted from the side-hustle profit; you pay that through your Self Assessment return. In the first year the whole bill falls due on 31 January after the tax year ends, with a payment on account on top if one is needed.

Two ways to pay:

• Directly: pay by 31 January (and 31 July if payments on account apply). This is the default.
• Through your tax code: per gov.uk, if you owe less than £3,000, already pay tax through PAYE, and file online by 30 December (paper by 31 October), the amount can be collected from your salary or pension in equal instalments over 12 months. You still file a return each year.

10. Specific scenarios: content creators, NFTs and crypto

Subscription and adult content platforms: ordinary self-employment. Your gross receipts are your income and the platform's commission is an allowable expense. Costumes used for performing, lighting, cameras and a share of the home space used for making content can be allowable to the extent they are used for the trade; everyday clothing and personal grooming are not. If your taxable turnover goes over £90,000 in a rolling 12 months you must register for VAT.

Streamers: the same treatment. Advertising revenue, subscriptions, channel memberships and paid messages are income. Equipment and software used for streaming are allowable; equipment also used privately, such as a gaming PC, is apportioned.

NFTs: for most individuals, buying and selling NFTs falls under Capital Gains Tax rather than trading. For 2026/27, the annual exempt amount is £3,000, and gains above it are taxed at 18% within the basic-rate band and 24% above it. Keep records of what you paid (including fees) and what you received, in pounds, for each transaction.

Crypto staking: HMRC's CRYPTO21200 says that where staking is not a trade, the sterling value of tokens at the time you receive them is taxable as miscellaneous income. Selling or exchanging those tokens later is a separate disposal for Capital Gains Tax. Exchanging one token for another (for example ETH for another token) is a disposal of the token you give up, measured at the sterling value of what you receive.

Crypto trading as a trade: HMRC's CRYPTO20250 says only in exceptional circumstances would it expect an individual to buy and sell exchange tokens with such frequency, organisation and sophistication that it amounts to a trade. Most individual activity falls under Capital Gains Tax.

11. Putting earlier years right

If you have been trading for several years without declaring the income, HMRC's Digital Disclosure Service lets you tell it, work out the tax, NI and interest for each year, and pay. The penalty depends on why the tax was underpaid and whether you told HMRC before it contacted you. For inaccuracies, Finance Act 2007 Schedule 24 sets these ranges (para. 10):

• Reasonable care taken: no penalty.
• Careless: up to 30% of the extra tax; minimum 0% if unprompted, 15% if prompted.
• Deliberate but not concealed: up to 70%; minimum 20% unprompted, 35% prompted.
• Deliberate and concealed: up to 100%; minimum 30% unprompted, 50% prompted.

Interest runs on the tax from when it should have been paid. HMRC can normally assess up to 4 years after the end of a tax year, 6 years if the underpayment was careless, and 20 years if it was deliberate (Taxes Management Act 1970, ss.34 and 36), so a disclosure covers the years within those limits. Gather your platform payout reports and bank statements, work out the profit for each year, and disclose before HMRC contacts you to stay in the unprompted ranges.

Related

• UK self-employed tax calculator (Income Tax + Class 4 NI)
• Self Assessment step-by-step guide
• HMRC penalties guide (late filing and payment)
• Two jobs calculator (second PAYE employment, not side hustle)
• CIS (Construction Industry Scheme) calculator
• Contractor calculator (Inside / Outside IR35)
• VAT Flat Rate Scheme guide
• Capital allowances calculator (AIA)
• UK Capital Gains Tax calculator (NFTs, shares, crypto)
• UK tax deadlines 2026/27
• Methodology and gov.uk sources