Side hustle tax UK 2026 has become a source of widespread confusion, the Low Incomes Tax Reform Group warns, as HMRC starts cross-referencing two years of platform data against Self Assessment returns.
The tax authority now holds full transaction records on UK sellers from Vinted, eBay, Etsy, Airbnb, Uber, Deliveroo and other major platforms.
In brief:
- HMRC holds platform reports covering the 2024 and 2025 calendar years under DAC7 reporting rules.
- Reporting kicks in at 30 transactions or roughly £1,700 (€2,000) per seller per platform per calendar year.
- The trading allowance stays at £1,000 of gross income for the 2026 to 2027 tax year.
- HMRC originally committed around £37 million and 24 full-time staff to enforce the new platform reporting rules.
- Penalties for failing to notify HMRC of trading income can reach the full amount of unpaid tax.
Why HMRC now has the platform data
This new reporting regime stems from the OECD Model Reporting Rules for Digital Platforms, known as DAC7. It became UK law on 1 January 2024 and applies to any platform that helps users sell goods, services, transport or accommodation.
Platforms are required to send HMRC information on any seller who completes 30 or more transactions or earns more than €2,000 — roughly £1,700 — on that platform in a calendar year. A first batch of reports landed at HMRC by 31 January 2025, covering 2024 activity. The second arrived by 31 January 2026.
That’s two full years of data on millions of UK sellers. The reports include the seller’s name, address, date of birth, bank details, platform username, total payments received, fees deducted, and where provided, a National Insurance number or UTR.
HMRC began acting on the first batch with “One to Many” nudge letters in spring and summer 2025, targeting sellers on eBay, Vinted and Airbnb who appeared to have under-reported. From June 2026 onwards it is working through the 2025 calendar-year data received in January 2026 and issuing a further wave of letters.
Platforms in scope include eBay, Vinted, Depop, Etsy, Amazon Marketplace, Facebook Marketplace, Airbnb, Booking.com, Uber, Deliveroo, Fiverr, Upwork and TaskRabbit. Anyone who’s earned through any of them in the last two years has likely already been included in a platform report.
Angela MacDonald, HMRC’s Second Permanent Secretary and Deputy Chief Executive, said when the rules took effect in January 2024: “These new rules will support our work to help online sellers get their tax right first time. They will also help us detect any deliberate non-compliance, ensuring a level playing field for all taxpayers.”
Side hustle tax UK 2026: trading or not?
Here’s the part most people get wrong.
Being reported by a platform doesn’t mean a seller owes tax. Those DAC7 thresholds are reporting triggers for the platform — not tax thresholds. Whether anything is owed depends on a much older question: is the activity trading, or just selling personal possessions?
Selling personal belongings originally bought for use, not resale, isn’t taxable, and it never has been. That holds even where a seller offloads 200 items and the platform sends every detail to HMRC. Clearing out a wardrobe, attic or garage doesn’t make someone a trader, regardless of the amounts involved.
Meredith McCammond, Technical Officer at the Low Incomes Tax Reform Group, has summed it up.
“Despite ongoing efforts by tax professionals up and down the land, we are still seeing a large amount of confusion about the ‘new’ side hustle tax reporting rules for online platforms,” she said. “Many people wrongly think that just because a platform reports their details to HMRC, they must owe tax. That is simply not the case.”
What does count as trading? HMRC looks at intent and pattern. Buying stock to resell at a profit is trading, and so is making things to sell — handmade jewellery, art, crafts.
Providing a service for payment also counts: driving, delivery, freelance work, tutoring. Renting out property or rooms on a regular basis is trading too.
A simple worked example: someone selling 50 items of old clothing on Vinted for £2,500 owes nothing, even though the platform reports them. Buy 50 vintage items at car boot sales for £500 and resell them on eBay for £2,500, and that’s £2,000 of trading profit that needs declaring.
What the trading allowance means in practice
For anyone trading, the first £1,000 of gross income each tax year is tax-free under the trading allowance. Below that, there’s no need to register with HMRC or file a Self Assessment return at all.
Once trading income tops £1,000, things change. You must register as self-employed and file a side hustle Self Assessment return for the relevant tax year.
One change on the horizon is worth flagging. The government has announced plans to raise the Self Assessment filing threshold for trading income from £1,000 to £3,000 by the end of this parliament. Importantly, this is a reporting change, not a tax cut. Tax will still apply to trading income above £1,000.
People earning between £1,000 and £3,000 will simply pay it through a new online service instead of completing a full Self Assessment return. The £1,000 trading allowance itself stays the same, and Parliament has not yet legislated a date.
A trader can either deduct the £1,000 allowance from gross income, or claim actual business expenses instead — whichever gives a better result. Both options can’t be used together.
A few details often catch people out. The allowance applies to gross income, not profit.
There’s only one trading allowance per person per tax year, regardless of how many platforms or income streams are involved. The £1,000 property allowance for rental income is separate, and both can apply in the same year if both fit.
There’s a more generous option for letting a furnished room in a main home: the Rent a Room Scheme covers up to £7,500 of gross income tax-free. That’s separate from the property allowance, and significantly more useful for live-in landlords or Airbnb hosts letting a spare room.
Penalties matter here. Failure to notify HMRC of new self-employment can carry penalties of up to the full amount of unpaid tax, depending on behaviour.
Late filing triggers an immediate £100 fine that escalates. Late payment interest is currently 8%. Voluntary disclosure made before HMRC makes contact can reduce penalties significantly — and in non-deliberate cases, sometimes to zero.
The practical question for any seller, then, is whether your activity actually falls on the trading side of the line, and what to do about it if it does.
What to check before the deadline
If a letter arrives from HMRC about online selling, the first thing to do is read it carefully and then check the facts. A letter is not a bill, and it doesn’t mean you owe tax.
Ask yourself: were the sales personal items you originally bought for your own use, or were you buying or making things to sell? If it’s the first, you can reply to HMRC explaining the position. Keep any evidence you have — purchase receipts, photos, anything that supports your version of events.
If you were trading and earned more than £1,000 in a tax year you didn’t declare, the right move is to register as self-employed and file a Self Assessment return. Registration is due by 5 October following the end of the tax year you started trading. Online filing is due by 31 January.
Steps to take now:
- Add up your gross income from each platform across the 2024 to 2025 and 2025 to 2026 tax years separately.
- Decide which side of the trading/selling-personal-items line your activity falls on.
- If you were trading and exceeded £1,000 in either year, register for Self Assessment and make a voluntary disclosure to HMRC.
- Keep records of purchases, fees and postage to support either expense claims or your case that the sales were personal.
Still unsure whether your activity counts? HMRC’s Tax Help for Hustles campaign site includes an anonymous checker tool that walks you through a few short questions and tells you whether you need to declare.
The page also tackles the common misconception that nothing is owed below £3,000 — HMRC’s position is unambiguous: tax is still due on trading income above £1,000.
There’s more detail on how the £1,000 threshold works in our trading allowance guide for the self-employed. It walks through worked examples and shows how to claim the allowance on a Self Assessment return.
Selling on a specific platform? Tax treatment varies by what you sell and how. See our eBay tax guide for casual and high-volume online sellers, the Amazon accounting guide for FBA and Marketplace traders, or the landlords tax guide if your side hustle is Airbnb or other short-term lets.
Key Takeaways
- HMRC now holds two years of platform data on millions of UK sellers — but being reported doesn’t mean you owe tax.
- Selling your own used belongings at a loss is not taxable, no matter how many items you sell.
- Buying or making things to sell, or providing a service, counts as trading and is taxable above the £1,000 trading allowance.
- If you’re trading above £1,000, register as self-employed and file Self Assessment for that tax year.
- A nudge letter from HMRC isn’t a bill — but you’ll need to respond, even if it’s just to explain you were selling personal items.
- Voluntary disclosure before HMRC contacts you typically reduces penalties, sometimes to nothing in non-deliberate cases.
Written by:
Tax Rebate Services Editorial Team
Reviewed by:
Tony Shanks
,
qualified Taxation Technician (ATT)
Last updated:
This article provides general information and is correct as at the date shown. It isn't personalised tax advice — for help with your own circumstances, speak to a qualified adviser or HMRC.
