Online platforms must provide HMRC with sales reports on ‘side hustle’ businesses

If you make some extra money via a ‘side hustle’ – by selling online – you should be aware that digital platforms now share information about sellers with HMRC. You might need to pay tax on any profits you make – but it depends!

Read on to find out what the new reporting rules are, and how to work out if you should be paying tax on profits you make from your online selling activities.

Scroll down for five key steps to take if you have a side hustle.

Online platforms must submit information on their sellers to HMRC

The Low Incomes Tax Reform Group says that HMRC has not sufficiently warned people who make money trading online via ‘side hustles’ that platforms such as eBay will start to notify the taxman of sellers’ incomes from January 2025.

Although nothing has changed in terms of tax rules – everyone must pay tax on undeclared earnings – HMRC will soon have more information on individuals who use platforms like Vinted, Etsy and Fiverr when the new reporting rules come into play next year.

HMRC estimates that the new reporting requirements could affect up to five million individuals (including the self-employed).

What exactly are HMRC’s new ‘side hustle’ reporting rules?

The new rules – which HMRC originally first announced in 2021 – work as follows:

• Online platforms store data about their sellers, including who they are, where they’re located, and how much sales income they generate each year.
• Digital platforms must submit data to HMRC by the end of January each year – for traders who generate sales over a certain threshold (see below).
• The platforms also have to send reports to affected traders.
• HMRC can share this data with international tax authorities.
• If your online activity constitutes a ‘trade’, you may have to pay tax on your profits via self assessment (see below).

Which small businesses are affected?

Online platforms already store sales information related to all of their users. However, HMRC has adopted new OECD reporting requirements.

This means that platforms have to send HMRC data on traders who have earned more than €2,000 or had more than 30 transactions over a calendar year.

Some initial reports are due in January 2025, based on 2024 sales. However, the majority of online traders will begin receiving reports from January 2026 – based on their sales activities for 2025.

Do you have to pay tax on any ‘side hustle income you earn?

You have to pay income tax on any income that hasn’t already been taxed.

However, you also have to take into account any allowances you might be entitled to.

For example, most people don’t pay any tax on income below the personal allowance (£12,570 in 2024/5).

Are your online sales a ‘hobby’ or a ‘trade’?

You need to work out if you’re simply selling a few things online (as a hobby), or if your selling activity has become a ‘trade’.

• If your selling activity is classed as a ‘trading activity’ – and there are nine ‘badges of trade’ which can demonstrate if you’re selling as a business (in HMRC’s eyes), then you must pay tax on any profits you make.
• If you do need to report any trading activities, you only declare any profits you make, i.e. what’s left after you’ve subtracted the cost of the item and any expenses you incurred such as postage and platform fees.
• If you are already registered for self assessment, you simply need to declare any profits at the end of each tax year.
• If you have made profits from trading activity, then you probably need to register for self assessment.

What about the £1,000 trading allowance?

An alternative is to claim the £1,000 trading allowance against your online trading income.

This is sometimes known as the hobby allowance’.

Unsurprisingly, the way the trading allowance works isn’t particularly straightforward.

Thankfully, LITRG has produced this helpful guide which explains your entitlement under various scenarios.