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Last reviewed: by the Smart Savings Guides editorial team. How we research and update articles.
Cashback sites like TopCashback and Quidco pay you a share of the commission retailers give them for sending you their way. Used carefully on purchases you were making anyway, they can return a useful amount each year. But tracking can fail, payouts can be slow, and the headline rates aren't always what you get. Here's how to judge whether they're worth it for you.
Key takeaways
- Retailers pay cashback sites a commission, and the site shares some of it with you.
- The catches: tracking can fail, payouts can take months, and some sites charge for higher rates.
- Worth it for planned purchases, especially big ones like insurance, broadband or holidays. Never buy just for cashback.
- Click through, accept cookies, buy in one go and keep your confirmation to protect your claim.
How they work
Retailers pay the site a commission for sending you, and the site shares some of it with you. When you click through from the cashback site, a tracking cookie records that you came from there. If you complete a qualifying purchase, the retailer reports it, and the cashback appears in your account as "pending" or "tracked." Once the retailer confirms the sale (after its return period ends, for example), the cashback becomes payable.
The main UK cashback sites compared
| Feature | TopCashback | Quidco |
|---|---|---|
| Free account | Yes | Yes |
| Paid tier | TopCashback Plus: £5 a year, deducted from your cashback | Quidco Premium: £1 for each month you earn cashback, deducted from earnings |
| Paid tier benefit | Higher rates on some retailers and extra perks | Higher or full rates on some retailers |
| Payout options | Bank, PayPal, gift cards (sometimes with a bonus) | Bank, PayPal, gift cards |
Fees and features change, so check each site's current terms.
The catches
Tracking can fail, payouts can take months, and some sites charge a membership fee for higher rates. - Tracking failures: ad blockers, cookie settings, discount codes from other sites or switching devices can stop a purchase being tracked. - Slow payouts: cashback often stays pending for weeks, and for travel or energy deals, sometimes months. - Conditions: some offers exclude gift cards, delivery charges, VAT or certain products. Others require new customers only. - Declines: if you return items or cancel, the cashback is removed.
When cashback is worth it
Cashback works best on bigger planned purchases. Switching car or home insurance, broadband, mobile contracts and holidays can carry larger cashback amounts than everyday shopping. For small purchases, the rewards are usually modest.
Step by step: get cashback that actually pays
- Sign up to a cashback site and confirm your email.
- Before shopping, search the retailer on the cashback site and read the terms.
- Click through, and accept cookies on the retailer's site.
- Turn off ad blockers for the visit.
- Complete your purchase in one session, on the same device.
- Keep your order confirmation until the cashback is paid.
- If it doesn't track within a few days, claim it. See how to claim missing cashback.
Getting the most from them
Clear cookies or use the site's browser extension, keep receipts, and claim missing cashback promptly. Browser extensions remind you when cashback is available, which helps avoid forgetting. Compare rates on both major sites before big purchases, as they can differ.
Cashback vs. other ways to save
| Option | Best for | Watch out for |
|---|---|---|
| Cashback sites | Planned online purchases | Tracking failures, slow payouts |
| Cashback credit cards | Everyday spending you pay off in full | Interest if you carry a balance |
| Discount codes | One-off savings | Using codes from other sites can void cashback |
| Price comparison | Insurance, energy, broadband | Compare the full annual cost |
Is it safe?
The large UK cashback sites are established businesses. Use a strong, unique password and turn on two-factor authentication if offered, since your account holds money. Withdraw your cashback regularly rather than leaving large balances.
Don't let cashback change your choice
A deal with high cashback isn't automatically the best deal. Compare the total cost after cashback with other options, and don't buy something you don't need. For energy, see is it worth switching energy now?.
Do you pay tax on cashback?
For most people, cashback on personal purchases is treated as a discount rather than income. If you earn significant amounts from referrals or other activities, check HMRC guidance.
Cashback on insurance and switching
Insurance, broadband and energy deals often carry some of the biggest cashback amounts, but they also have the longest confirmation periods, and some require you to stay with the provider for a set time. Read the offer terms carefully, and remember that the cheapest policy after cashback may still not be the best cover for your needs.
Sign-up bonuses
Cashback sites sometimes offer welcome bonuses for new members, usually once you earn a minimum amount of cashback. Check the terms, as bonuses often take time to confirm and have conditions.
Frequently asked questions
Are cashback sites worth it in the UK?
For planned purchases, yes. They can return a useful amount each year, especially on insurance, broadband and holidays. Just expect occasional tracking failures and slow payouts.
Is TopCashback or Quidco better?
It depends on the retailer. Rates differ, so compare both before big purchases. TopCashback Plus costs £5 a year from your cashback, and Quidco Premium costs £1 for each month you earn.
How long does cashback take to pay out?
Cashback usually shows as pending within days, but it can take weeks or months to confirm, depending on the retailer's return and validation period.
Why didn't my cashback track?
Common reasons include ad blockers, declined cookies, using a discount code from another site, or not completing the purchase in one session. You can usually submit a missing cashback claim.
Sources
Official sources this article relies on, checked October 15, 2026. Rules and prices change, so confirm details at the source.