8 Online Selling Tax Myths That Are Costing Vinted, eBay and Etsy Sellers Money

You've probably seen it. Someone in a Vinted Facebook group confidently explains that you don't owe tax until you've sold £1,700 worth of items. Half the group agrees. A few people screenshot it and save it. And none of it is true.

Online selling tax is one of those topics where misinformation spreads faster than the correct version. Partly because the rules are genuinely complicated, partly because the wrong answer is usually more reassuring than the right one, and partly because nobody corrects it when it gets 47 likes.

Some of these myths are harmless. Others could result in an undeclared income penalty from HMRC, backdated tax bills with interest, or a letter arriving years after you thought you'd got away with it. Here are the eight that keep coming up.

Myth 1: "£1,700 Is the Point at Which You Start Paying Tax"

This one has taken on a life of its own. The £1,000 figure you'll see mentioned elsewhere is the trading allowance, which is the threshold below which you generally don't need to tell HMRC about small trading income. The £1,700 figure circulates because it's roughly the Vinted reporting threshold under DAC7 rules, the point at which platforms must report your sales data to HMRC.

Neither of these figures is the tax threshold.

Whether you owe tax depends on your total taxable income across all sources compared to the personal allowance, currently £12,570. If your online selling income pushes you over that figure combined with any employment income, you're in Self Assessment territory. The reporting thresholds exist to help HMRC identify who might owe tax. They're not a permission slip to stop counting above a certain number.

If you've been banking on £1,700 as your ceiling, recalculate your gross income properly. Our guide to Vinted tax covers how the reporting thresholds and tax obligations interact.

Myth 2: "You Don't Owe Tax If You Were Paid by Bank Transfer"

The logic here is that if money doesn't go through a platform, HMRC can't see it. That's wrong for two reasons.

HMRC has data sharing agreements with banks and can see large or unusual deposits in personal accounts as part of compliance checks. More importantly, the obligation to declare income doesn't depend on how HMRC might discover it. It depends on whether the income exists. Cash in hand, bank transfers, PayPal payments to friends, gift cards, receiving stock as payment instead of money: all of it counts.

The method of payment has no bearing whatsoever on whether you owe tax. This myth is popular because it sounds plausible and makes people feel safer. It doesn't make them safer.

Myth 3: "Fewer Than 30 Sales Means HMRC Can't See You"

A version of this myth pops up regularly, usually connected to a vague memory of something eBay or Vinted announced about reporting rules. The 30-item figure doesn't correspond to any current HMRC reporting threshold.

Under the DAC7-derived rules that came into force for the 2024 calendar year (reported to HMRC in January 2025), Platforms report sellers unless they have fewer than 30 sales AND received less than approximately £1,700 in the calendar year. Both conditions have to be under the limit to avoid reporting. If either one is exceeded, the platform reports you. But this is the platform reporting threshold, not the point at which you owe tax, and it doesn't mean HMRC can't see you if you're below it. Platforms report in aggregate and HMRC uses the data as a starting point, not a cut-off.

Our post on how HMRC knows about your side hustle income covers exactly how the data matching works.

Myth 4: "Closing Your eBay Account Clears Your Tax Liability"

This one is surprisingly common and genuinely risky. The thinking goes that if the account no longer exists, neither does the evidence of the sales.

HMRC can raise an assessment going back up to four years for honest errors where reasonable care was taken, six years where careless behaviour is involved, and twenty years where the behaviour was deliberate. Closing the platform account doesn't delete the records HMRC already holds from platform reporting. It doesn't cancel any tax owed on income you already received. All it does is mean you can no longer access your own transaction history, which makes it harder to calculate what you actually owe if HMRC does come asking.

If you've closed an account and received income on it in recent tax years, the liability still exists. Voluntary disclosure before HMRC contacts you results in a significantly lower penalty than being caught. Our penalties post covers the penalty structure in detail.

Myth 5: "Personal Items Are Always Tax-Free No Matter How Many You Sell"

This is partially true and partially not, which makes it more dangerous than a straightforward myth.

Selling personal possessions you genuinely owned for personal use is not trading. A wardrobe clearout is not a business. But the word "always" in this myth is where it falls apart.

If you're selling the same type of item repeatedly, buying similar items and reselling them, or building up a pattern of purchase and resale, HMRC applies the badges of trade test to determine whether what you're doing is actually trading rather than personal disposal. The fact that you call them personal items doesn't make them personal items in HMRC's eyes if the pattern of behaviour says otherwise.

HMRC also has access to your purchase history on platforms through the same reporting rules. If you bought 40 designer handbags from charity shops over two years and sold all of them on Vinted for more than you paid, claiming personal items becomes difficult to sustain. Our badges of trade guide covers how HMRC draws the distinction.

Myth 6: "You Only Pay Tax on What Actually Lands in Your Bank Account"

This one is understandable because bank receipts feel like the real money. What you actually received, net of platform fees and postage deductions, is what feels like your income.

But tax doesn't work on what you received net. It works on your gross income, which is the full sale price before any platform deductions. Platform fees, transaction fees and shipping costs are legitimate business expenses that reduce your taxable profit. But they reduce your profit, not your gross income.

Say you sell an item for £50 on eBay. eBay deducts selling fees. You receive £45.50 in your hand. Your gross income for tax purposes is £50. The £4.50 in fees is an allowable expense that reduces your profit. The distinction matters because if you're using gross income to check whether you're above the £1,000 trading allowance threshold or any other figure, using the net bank receipt understates it.

Our post on why your bank balance is not your profit goes through exactly how this works platform by platform.

Myth 7: "The £1,000 Trading Allowance Means the First £1,000 of Profit Is Tax-Free"

Two errors in one sentence. The trading allowance applies to gross income, not profit. And it's an alternative to claiming expenses, not an addition to them.

If your gross income from online selling is £1,000 or less in a tax year, you don't need to report it or pay tax on it. If your gross income is over £1,000, you choose between claiming the allowance as a flat £1,000 deduction from gross income, or claiming your actual expenses instead. You can't do both.

For sellers with meaningful costs, platform fees, postage, packaging, cost of stock, mileage to sourcing trips, the actual expenses route often produces a larger deduction and a lower tax bill. Whether to claim the allowance or actual expenses depends on your specific numbers and can make a substantial difference to what you owe. Our trading allowance guide covers the decision properly.

Myth 8: "If HMRC Hasn't Contacted Me Yet, I'm Fine"

This is the most dangerous myth of the eight because it mistakes silence for approval.

HMRC receives platform data in January each year for the previous calendar year. Processing that data, matching it to tax records, identifying discrepancies and generating enquiries or nudge letters takes time. The fact that nothing has arrived yet doesn't mean nothing will arrive. It means HMRC is working through the data it holds.

HMRC can raise assessments for underpaid tax going back multiple years. A nudge letter arriving in 2027 about 2024 and 2025 income is completely within their normal operating pattern. The silence is not permission. It's a gap between the activity and the consequence.

Check Yourself: The Myth Checker

How many of these did you believe before reading this post? Use the tool below to see your position.

Why These Myths Spread

Most of them originate from a grain of truth. The £1,700 figure is real, it's just not what people think it is. The 30-item rule exists in some form. Personal items are usually tax-free. When people share information in communities, they share the version they understood, which is often simpler and more reassuring than the actual rule.

The fix is checking the original source rather than a Facebook thread. HMRC's guidance on trading income and the trading allowance is written in plain English and is available at gov.uk. It is also, inevitably, slightly less reassuring than the community version.

If your gross selling income has exceeded £1,000 in any recent tax year and you haven't yet filed a Self Assessment return, the UK Online Seller Tax Template will show you what you're likely to owe based on your actual numbers so you can make an informed decision about what to do next.

Get the UK Online Seller Tax Template, £14.99 →