eBay Tax UK: The Complete Guide for Sellers in 2026

Marcus pulled up his eBay transaction report on a Tuesday morning in February. Not because January had gone badly. Because it had gone well enough that he wanted to understand it properly rather than just live with the number his rough spreadsheet had produced.

He had filed his Self Assessment return. He had paid what it said he owed. But sitting in his Salford flat surrounded by rails of sourced denim and a packing table that had become a permanent feature of the room, he had a nagging sense that the number was wrong. Not dramatically wrong. Just slightly off in a way he could not identify.

He was right. He had been calculating his gross income from eBay using the net payouts that landed in his bank account rather than the full sale prices. He had been understating his income by the amount of his fees. The fees were still deductible as an expense. But because he had started from the wrong gross number, his trading allowance versus actual expenses comparison had been using incorrect inputs all year. The difference was not enormous. But it was real.

This guide covers what Marcus needed to know and what every eBay seller needs to understand about how UK tax works on their eBay income in 2026/27.

The Private vs Business Seller Distinction and Why It Does Not Protect You

Since October 2024, eBay UK split its fee structure into two tiers. Private sellers, defined as individuals selling personal possessions they no longer want, now pay zero final value fees on most categories. eBay shifted the cost to buyers instead, who pay a buyer protection fee on top of the item price. Business sellers, defined as anyone trading commercially, continue to pay the full final value fee.

This sounds helpful if you are on a private account. But it creates a dangerous misconception that is circulating in eBay seller communities right now.

Being classified as a private seller by eBay is not the same as being classified as a casual seller by HMRC. eBay makes its classification based on selling patterns on its own platform. HMRC makes its classification based on the badges of trade applied to your full activity across every channel. A seller on a private eBay account who is regularly buying items to resell them at a profit is a trader in HMRC's eyes regardless of what their eBay account type says.

The practical consequence is that some sellers are now receiving zero fees deducted from their eBay payouts, seeing the full sale price land in their account, and mistakenly concluding that eBay treats them as a private seller therefore everything is fine. eBay's fee treatment and HMRC's tax treatment are completely independent of each other. Zero eBay fees does not mean zero tax liability.

Marcus has a business seller account. He pays fees on every sale. But the distinction matters for readers who may be on private accounts and feeling a false sense of security from the fee removal. Our post on how HMRC knows about your side hustle income covers the data-matching picture in full.

How eBay Reports Your Sales to HMRC

Marcus's eBay income does not stay between him and eBay. Since January 2025, eBay has been reporting seller data to HMRC automatically under the UK's implementation of the DAC7 rules.

Platforms report sellers unless both conditions are met: fewer than 30 transactions in the calendar year and total consideration under approximately £1,700. If either threshold is exceeded, the platform reports you. Marcus, with approximately 800 eBay sales per year generating £16,400, is reported comprehensively. The figure eBay sends to HMRC is the gross sale amount, the full price the buyer paid including postage, before any fees are deducted.

This is the number HMRC holds. When Marcus files his Self Assessment return, HMRC compares his declared income against the figure in its platform data. If there is a discrepancy, the risk of an enquiry increases. If his declared gross income matches what eBay reported, the risk is significantly lower.

This is also the reason that recording the correct gross income from day one is not administrative pedantry. It is the difference between records that hold up and records that contradict data HMRC has already received.

What Gross Income Actually Means on eBay

This is the point where Marcus's spreadsheet had been quietly producing the wrong answer.

When an item sells on eBay, the full transaction amount, item price plus any postage charged to the buyer, is the gross sale. eBay then deducts its fees from that amount before paying the seller. What arrives in the bank account or eBay wallet is the net payout after fees.

For tax purposes, gross income is the full transaction amount before the fee deduction. The fee is a separate deductible business expense. You do not declare the net payout. You declare the gross amount and then deduct the fee alongside your other expenses.

Here is what that looks like on a single eBay sale for Marcus.

Marcus records £45 as his gross income. The £6.99 in total fees is a deductible expense. The £38.01 that arrived in his account is not his tax starting point. It is what remains after a deductible cost has already been taken. Our post on why your bank balance is not your profit covers why this distinction matters for the trading allowance threshold and for your final tax calculation.

eBay Fees in 2026: What Marcus Actually Pays

Marcus is a business seller in the Clothing, Shoes and Accessories category. eBay's fee structure for his sales in 2026 works as follows.

The Final Value Fee for clothing is 11.9 percent of the gross transaction amount. eBay adds 20 percent VAT on top of that fee, making the effective rate 14.28 percent for a non-VAT-registered seller. Marcus cannot reclaim the VAT element because he is not VAT-registered, but the full fee amount including the VAT is a deductible expense for income tax purposes. He deducts what it actually cost him, not the pre-VAT figure.

In addition to the percentage-based fee, Marcus pays a per-order fee of £0.40 for orders over £10, which applies to almost every sale he makes. The regulatory operating fee of 0.35 percent applies to all transactions.

The combined effect is that Marcus pays approximately 15 percent of each sale in fees before any other costs are considered. Over £16,400 of gross eBay income, his total eBay fees are approximately £2,460 per year. That is a significant deductible expense that reduces his taxable profit considerably, which is why using the trading allowance rather than actual expenses at his income level would produce a substantially worse tax outcome.

Your eBay Tax Position: The Calculator

Enter your numbers below to see your estimated tax position on your eBay income.

What eBay Sellers Can Claim as Expenses

Marcus's actual expenses position is what makes his tax bill manageable relative to his gross income. Every deductible cost reduces the profit figure that income tax and Class 4 NI are applied to.

For eBay sellers the main deductible expenses are the cost of stock bought to resell, eBay fees in full including the VAT element, postage costs paid to send items, packaging materials, mileage driven to source stock and to post items at 55p per mile from 6 April 2026, the proportion of home running costs for a room used to store stock and pack orders, the business proportion of a mobile phone bill, and any subscriptions or selling tools used for the business.

Our complete expenses guide for online sellers covers every category in detail with the calculator that shows whether your actual expenses beat the trading allowance for your specific numbers. The mileage guide covers the 55p rate specifically, and the spare room post covers the home storage and packing claim that Marcus has been missing entirely until this year..

Trading Allowance vs Actual Expenses for eBay Sellers

The £1,000 trading allowance lets you deduct £1,000 from your gross income before calculating tax, with no need to track individual expenses. For eBay sellers with modest income and few costs, it can produce a lower tax bill than actual expenses. For anyone with significant stock costs, meaningful fees, regular mileage and a spare room used for the business, actual expenses almost always wins.

Marcus's position makes this clear. His gross eBay income is £16,400. The trading allowance produces £15,400 of taxable profit. His actual expenses, stock at £6,200, eBay fees at approximately £2,460, mileage at £2,640, packaging at £280, spare room at £3,021 and mobile at £252, total £14,853. His taxable profit under actual expenses is £1,547. The trading allowance produces £15,400 of taxable profit. Actual expenses wins by £13,853 of taxable profit, which at the combined basic rate of 26 percent saves Marcus approximately £3,602 in tax and NI compared to claiming the allowance.

This is not a marginal call. For a full-time or near-full-time eBay seller, the trading allowance is almost never the right choice. Our post on when not to claim the trading allowance covers the specific scenarios where the allowance still wins, which is mostly early-stage sellers with very low costs.

What to Do If You Have Been Selling on eBay Without Declaring

Marcus is registered and compliant. But a significant number of eBay sellers in the Jade position, selling regularly across multiple years without declaring, are reading this post for a different reason.

HMRC can raise an assessment going back four years for honest errors where reasonable care was taken, six years for careless behaviour, and twenty years for deliberate non-disclosure. eBay's DAC7 data covers 2024 onwards. Prior years may have been reported under earlier data-sharing arrangements.

Voluntary disclosure before HMRC contacts you produces a significantly lower penalty than being identified through a compliance check. The penalties guide covers the structure in detail and the late registration post covers the practical steps for getting your position right.

Marcus's Complete 2025/26 eBay Tax Picture

Marcus's final position for his eBay income specifically, excluding his Depop and Facebook Marketplace income which are calculated alongside it:

Gross eBay income: £16,400
eBay fees (approximately 15% combined): £2,460
Stock purchased for eBay: £6,200
eBay-specific mileage (sourcing and posting): £1,840
Packaging attributable to eBay sales: £220
eBay-specific share of mobile phone: £180
Proportion of spare room costs: £2,118
Total eBay actual expenses: £13,018
eBay trading profit: £3,382

When combined with his Depop and Facebook Marketplace income and expenses, the full picture produces the overall trading profit that goes on his Self Assessment return. The UK Online Seller Tax Template handles all of this in one place, tracking income and expenses by platform and producing the combined profit figure automatically.

The template also showed Marcus, for the first time, that his spare room claim alone reduced his overall tax bill by approximately £786. He had been missing it for two years. On the spreadsheet he built himself, there was no line for it.

Get the UK Online Seller Tax Template, £14.99 per year →

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