Selling & reselling · Budget: £0 to £500 · Minimum age: 18+

Retail arbitrage

Retail arbitrage means buying goods from shops and reselling them on online marketplaces such as eBay, Vinted or Amazon <a href="https://resellvault.co.uk/retail-arbitrage-uk" target="_blank" rel="noopener noreferrer">Resell Vault</a>. You can test it with a modest stock budget, but fees, postage and demand all affect whether a purchase is worthwhile <a href="https://resellradar.co.uk/blog/retail-arbitrage-uk-guide" target="_blank" rel="noopener noreferrer">Resell Radar</a>.

Open the interactive guide (checklist, video, read-aloud) →

In plain words

Buy items cheaply and sell them for more.
Check what people actually pay before you buy.
Count postage, packaging and marketplace fees.
Start with a few items and keep every receipt.
Some items may take time to sell, or may not sell.

Who it suits

It may suit patient shoppers who enjoy comparing prices, checking demand and keeping accurate records. Marketplace age limits are not stated; this module is aimed at adults, and its age setting is not a claim that every platform requires sellers to be 18.

People pay for items they want but cannot find easily, or want delivered conveniently. A lower shop price can leave room for a resale margin, but only if buyers want the item and costs stay low.

Step by step

Choose a product type you can identify and store safely. Pick a category you understand, such as compact household items or books. Check that you have a dry, safe place to store stock, and start with items that are easy to pack. About 30-60 minutes.
Look for reductions, but do not buy on discount alone. Check clearance shelves and sale sections. Before buying anything, pause and find out whether buyers want that exact item and whether the likely sale price covers your costs. About 30-90 minutes.
Check eBay sold listings for the same item. Search for the exact product, including its model or size where relevant. Look at sold listings to see what buyers recently paid, rather than relying on unsold asking prices Resell Radar. About 10-20 minutes per item.
Scan Amazon items and check selling approval first. Use the Amazon Seller app to scan the barcode and review its estimated profit after fees. Before buying, check whether the brand or category needs approval Resell Radar. About 5-15 minutes per item.
Calculate every cost before deciding to buy. Write down the likely sale price, marketplace fee, postage, packaging and purchase cost. Allow for the chance that the item sells for less than the price you first saw. About 5-10 minutes per item.
Check that similar items sell regularly. Look for evidence of recent sales, not just a high advertised price. If demand is weak or uncertain, leave the item and keep your money for a better-tested choice. About 10-20 minutes per item.
Buy a small test batch and keep each receipt. Buy only a few units at first. Record the item, purchase cost, date and receipt, then add the sale price, platform fees and postage when each item sells. About 30-60 minutes.
Photograph items and describe them honestly. Take clear photos in good light and mention wear, missing parts or packaging damage. For branded goods, make sure the item is genuine Resell Radar. About 10-20 minutes per item.
Review the actual result before restocking. After an item sells, compare the money left after costs with your estimate. Note how long it took to sell and use that information before buying more. About 10-15 minutes per sale.

Your first 15 minutes

Choose one compact product category, compare shop prices with recent sold listings, and write down every likely cost before buying any stock.

The money

Start with recent sold prices for the same item, then subtract the purchase cost, platform fee, packaging and postage. Check the platform's current fee rules, and leave room for a lower sale price or a return; do not treat an asking price as guaranteed income.

Example only: In one week, suppose you sell three items for £20 each or €20 each: £60 or €60 income. If stock costs £30 or €30, packaging and postage cost £12 or €12, and platform fees cost £8 or €8, the amount left is £10 or €10 before tax and other costs. These figures are only an arithmetic example, not a typical result.

The rules

Retail arbitrage means buying goods specifically to resell them. If you sell online as a business, you may have tax, consumer and other duties. These differ between the UK and Ireland. If you're unsure how a rule applies, check with HMRC or Revenue and the relevant consumer-protection body.

UK and Northern Ireland

Trading income and tax. If you buy goods to resell, you are trading. The first £1,000 of trading income in a tax year is covered by the trading allowance. This is gross income before expenses. If your income is above that, you must tell HMRC GOV.UK Tax Help for Hustles. If you need to register for Self Assessment, the stated deadline is 5 October after the tax year ends GOV.UK.
VAT and platform reports. You must register for VAT if your taxable turnover is over £90,000 Business.gov.uk. Since 1 January 2024, platforms report sellers to HMRC if they meet the stated threshold of 30 or more items or about £1,700 a year. A report does not by itself mean you owe tax. Selling your own unwanted items is not taxed under this rule GOV.UK.
Online sales and returns. If you sell to consumers as a trader, online buyers generally have 14 days after receiving goods to cancel, subject to exceptions legislation.gov.uk UK Government guidance. Before the contract, give consumers the required information. Where a cancellation right applies, make the cancellation form available. Tell consumers before the contract if they must pay return costs. Consumers should send returned goods within 14 days of cancellation. You must refund them within 14 days of receiving the goods or proof of return. The refund must include standard outbound delivery, but not the extra cost of a more expensive delivery option. Unless you agree otherwise, deliver without undue delay and within 30 days UK Government guidance. If you're unsure how these rules apply to your sales, check with Trading Standards.
Business name and licences. There's no specific licence for retail arbitrage. In Northern Ireland and the rest of the UK, check with your local council or Trading Standards if you plan to sell unusual or regulated goods. Also check the marketplace's current seller rules. There's no stated platform age limit. Check the platform's current terms before opening an account.
Customer information. Use the ICO self-assessment tool to see whether you need to pay a data-protection fee. If you hold customer details only for your own accounts and transaction records, you are likely to be exempt. Other processing activities may affect whether you need to pay a fee ICO.
Insurance. Consider whether business or product liability insurance suits your activity. Ask an insurer about your circumstances. There's no stated requirement to have this insurance.

Ireland

Income tax and returns. If you're a PAYE worker, register for self-assessment using Form 11 if your taxable non-PAYE income is over €5,000 or your gross non-PAYE income is over €30,000. Below those limits, declare it on Form 12 through myAccount Revenue. If you're self-employed, you pay income tax, PRSI (Class S) and USC under self-assessment. Preliminary tax is due by 31 October Citizens Information. The stated deadline for a 2025 Form 11 return is 31 October 2026. There's a ROS extension to 18 November 2026 Revenue.
VAT. The VAT registration threshold for goods is €85,000 Revenue. If you're unsure how the threshold applies to your activity, check with Revenue.
Online sales and returns. If you sell goods to consumers as a business online, the consumer generally has 14 days from receiving the goods to tell you they are cancelling, subject to exceptions. They then have another 14 days to return the goods. Tell consumers about the cancellation right and timescales. Provide a cancellation form and explain how to use it. Refund them within 14 days of being informed of cancellation, subject to receiving returned items. Use the same payment method unless the consumer agrees otherwise CCPC. Before purchase, give the required details about your business, the product, price and charges, cancellation rights, contract length and deposit conditions. Make clear when payment is due. Do not add extras through pre-ticked boxes. Provide order confirmation in a durable format, such as email. If you do not tell the consumer about the cancellation right, it can be extended to 12 months from when it was first due to expire CCPC. Consumer rights apply to business sales, not sales between private individuals CCPC.
Business name and licences. If you trade under a name other than your own, register the business name with the Companies Registration Office. The stated fee is €20 online CRO. There's no specific licence for retail arbitrage. If you plan to sell unusual or regulated goods, check with the relevant authority. Also check the marketplace's current rules. There's no stated platform age limit. Check its current terms before opening an account.
Platform reports and insurance. Under DAC7, platforms report sellers of goods unless they have fewer than 30 transactions and less than €2,000 in sales Revenue. Consider whether business or product liability insurance suits your activity. Ask an insurer about your circumstances. There's no stated requirement to have this insurance.

Checked against official sources: 22 October 2026. Not yet reviewed by a qualified tax or legal adviser. General guidance, not legal advice. Check the official link beside each point before you start.

Common mistakes

Buying an item just because the shop has discounted it.
Forgetting platform fees, postage or packaging when estimating profit.
Trusting high asking prices instead of checking recent sales.
Buying a large batch before testing demand or approval requirements.
Describing an item's condition inaccurately or failing to keep receipts.

AI-made demonstration: this module has a 20-second street-chat video in the interactive guide. The presenter and the people in it are computer-generated, not real people.

Free community guide for Cookstown, Mid Ulster and anyone in the UK or Ireland. Nothing is for sale. About this site, AI, sources and privacy.