Airbnb, Vinted, eBay, Etsy, Uber and dozens of other platforms are now legally required to report what their UK sellers earn directly to HMRC. This is not a new tax, the rules on declaring extra income have always existed, but it removes the anonymity that many people, often wrongly, assumed platform income had.
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What Has Actually Changed
The underlying tax rules on income from trading, letting property or providing services have not changed. What has changed is the data HMRC receives. Under the OECD's Model Reporting Rules for digital platforms, platform operators were first required during 2025 to collect detailed information from their UK sellers, including identity, address, tax reference details and transaction totals, and to begin transmitting that information to HMRC. The first full wave of platform reports covering UK sellers reached HMRC from January 2026, and HMRC now cross-references this data against the self-assessment returns individuals actually filed, or failed to file.
Which Platforms and What They Report
The rules apply broadly across two categories of digital platform: those facilitating the sale of goods, such as eBay, Vinted, Depop, Etsy and Facebook Marketplace, and those facilitating the provision of services, including short-term accommodation lets such as Airbnb and Booking.com, ride-hailing and delivery platforms such as Uber and Deliveroo, and freelance or gig-work platforms such as Fiverr and various content-creator platforms. Reportable information typically includes the seller's name, address, tax identification details, bank account information, and the total consideration paid and number of transactions in the reporting period.
The Reporting Thresholds
The two categories of platform are subject to materially different thresholds. For goods sales, a de minimis exemption applies: a platform does not need to report a seller who had fewer than 30 transactions and total consideration below approximately £1,700 (2,000 euros) for the year. This is intended to exclude occasional, low-volume personal sales from the reporting regime entirely. For services, including short-term property lets, ride-hailing, delivery and freelance work, there is no equivalent threshold: reporting applies from the very first payment received through the platform, regardless of amount.
The £1,000 Trading Allowance
Separately from the platform reporting thresholds, which determine what HMRC is told, the trading allowance determines what is actually taxable. An individual can earn up to £1,000 of gross trading or miscellaneous income per tax year, combined across all sources rather than per platform or per activity, without needing to register for self-assessment or declare it, provided the income is not otherwise required to be reported for a different reason. Above that combined £1,000 threshold, the income generally needs to be reported, either by claiming the allowance against it (if the allowance has not already been used), or by deducting actual expenses and declaring the net profit, whichever is more favourable.
When Selling Online Is Not Trading at All
Not everything sold on a platform is trading income, and this distinction matters because it determines whether the trading allowance and reporting even apply in the first place. Selling personal possessions that were originally bought for personal use, such as clearing out a wardrobe on Vinted or selling an old phone on eBay, is not normally trading, regardless of the amount realised, because there is no organised, repeated activity carried on with a view to profit; it is simply a disposal of personal chattels, which may in any event fall within the separate capital gains tax exemption for most personal possessions. Genuine trading, by contrast, typically involves buying items specifically for resale, making or sourcing goods for sale on a repeated basis, or otherwise carrying on an organised commercial activity, applying the same "badges of trade" analysis HMRC and the tribunals use in any trading-versus-capital dispute.
The Highest-Risk Activities
Some categories of platform activity carry materially higher HMRC scrutiny risk than others, both because the amounts involved tend to be larger and because the reporting is more full.
- Short-term property lets. Airbnb-style letting income sits at the intersection of rental income rules and, since the abolition of furnished holiday lettings status, the ordinary property income regime, and is reported to HMRC from the first payment with no threshold.
- Ride-hailing, delivery and freelance work. Genuinely self-employed activity that should already be within self-assessment, but where platform reporting now makes under-declaration, or complete non-registration, far easier for HMRC to identify.
- Repeat, organised online selling. Sellers sourcing or making goods specifically for resale on a regular basis, as opposed to clearing out personal possessions, where the badges-of-trade analysis is likely to point towards taxable trading income once volume and pattern are considered.
What HMRC Does With the Data
Platform reporting data feeds into HMRC's wider data-matching capability alongside sources such as the Common Reporting Standard for offshore accounts, Land Registry data, and card processor information, collectively analysed through HMRC's Connect system. Where a mismatch is identified between platform-reported income and an individual's tax return, or the absence of any return at all, HMRC's typical first response is a nudge letter, inviting the recipient to review their position and make a disclosure if appropriate, rather than an immediate formal enquiry. Ignoring a nudge letter without genuine review, only for HMRC to open a formal enquiry reaching the same conclusion later, generally results in a materially worse penalty outcome than responding to the nudge letter constructively.
Making a Disclosure
Where a review confirms that platform income has genuinely gone undeclared, an unprompted voluntary disclosure, made before HMRC makes contact, is normally the most favourable route available, typically made through HMRC's Digital Disclosure Service. The behaviour category matters considerably to the penalty outcome: a genuine failure to appreciate that platform income was taxable, particularly where the amounts were modest and the activity did not look obviously commercial, is more likely to be treated as careless than deliberate, with a correspondingly lower penalty range, though this depends heavily on the specific facts and the individual's actual understanding at the time.
Practical Steps
- Add up gross platform income across all sources for each tax year. Check the combined total, not each platform individually, against the £1,000 trading allowance threshold.
- Distinguish personal disposals from trading. Clearing out possessions is generally not trading; buying or making goods specifically to resell generally is, however small the individual sale.
- Respond substantively to any nudge letter. A genuine review and, where appropriate, voluntary correction materially improves the outcome compared with waiting for a formal enquiry.
- Keep records going forward. Platform reporting means HMRC will increasingly already hold the headline figures; contemporaneous records of expenses and the basis for any allowance or exemption claimed are what actually protect a taxpayer's position in a review.
Frequently Asked Questions
Is there a new side hustle tax?
No. HMRC has confirmed there is no new tax. What has changed is that platforms now report seller data directly to HMRC, making mismatches with tax returns far easier to identify.
Do I need to declare income from selling items online?
The trading allowance exempts up to £1,000 of combined gross trading or miscellaneous income per year without needing to register or file. Above that, income generally needs declaring, though selling your own unwanted possessions is not normally trading regardless of amount.
What are the digital platform reporting thresholds?
For goods, no reporting below 30 transactions and roughly £1,700 total in the year. For services, including short lets and gig work, reporting applies from the first payment with no threshold.
What should I do if I have undeclared platform income from previous years?
An unprompted voluntary disclosure, typically via the Digital Disclosure Service, before HMRC makes contact generally secures a materially better penalty outcome than waiting to be found.