eBay Seller Tax Calculator

What this calculator does

It answers three questions for someone selling on eBay: are my sales taxable, how much tax is due, and will eBay tell HMRC about me. Enter your total sales for the tax year, the number of items, what the stock or materials cost, your fees and postage and any other costs. Choose whether you are reselling or selling your own unwanted things. The calculator tests the £1,000 trading allowance, works out the tax on the profit and runs the platform reporting check.

Trading or selling your own things

gov.uk draws the line like this. If you sell personal items from your home, like the contents of a loft or garage, you are unlikely to pay tax. If you buy or make goods to sell at a profit, you are likely to be trading and pay tax on the profit. A seller who buys job lots, car boot finds or wholesale stock to sell on eBay is likely to be trading. Clearing out your own belongings does not become a business just because you sell several items.

The £1,000 trading allowance

Up to £1,000 of gross trading income a year is tax-free. It is tested on your sales, not your profit, so £1,200 of sales with £800 of costs is over the limit. The allowance is one figure for all your trading, not one per platform, so eBay sales add to any other side income such as Vinted resales or freelance work. At £1,000 or less you generally do not need to tell HMRC, but you should keep records.

Over £1,000: actual costs or the allowance

Once your sales are over £1,000 you register for Self Assessment. You then deduct either your actual costs, such as the stock you bought, eBay fees, postage and packaging, or the £1,000 allowance instead, but never both and never more than your income. The calculator uses whichever leaves the lower profit. For a reseller whose stock cost is high, actual costs nearly always win.

Will eBay report me to HMRC?

Digital platforms must report their sellers to HMRC. A seller of goods is not reported if they make fewer than 30 sales and receive no more than €2,000 (about £1,700) in a calendar year. At 30 sales, or above about £1,700, your details and income are shared. gov.uk is clear that being reported does not automatically mean you owe tax. Platforms report by calendar year while your tax is by tax year, so check eBay's own total.

How the tax is worked out

Profit is added on top of your other income. Income Tax is the extra tax it causes, using the Personal Allowance of £12,570 and the 20%, 40% and 45% bands. Class 4 National Insurance is 6% on profit between £12,570 and £50,270 and 2% above that. Class 2 is voluntary if profit is below £7,105.

A worked example

A reseller on a £30,000 salary sells £5,000 of items on eBay in the year, having paid £1,500 for the stock and £300 for fees and postage. Costs of £1,800 are more than the £1,000 allowance, so actual costs win and the profit is £3,200. That profit is in the basic-rate band, so Income Tax is £640 and there is no Class 4 National Insurance. After costs and tax, £2,560 is left.

One-off sales of valuable items

Selling a personal possession for more than £6,000 may bring Capital Gains Tax into play, and the £6,000 figure also applies to the total value of a set of items. That is separate from trading tax, and it does not apply to ordinary clearing out.

What this calculator does not cover

It uses England, Wales and Northern Ireland rates, ignores student loan repayments and VAT, and treats all your other income as one figure. The reporting check uses about £1,700 as the sterling equivalent of the €2,000 limit. It is an estimate, not advice.