Cashback sites pay UK shoppers real money on purchases they would make anyway. Here is exactly how they work and how to use them effectively.
How Cashback Sites Work — The Mechanics
- You visit a cashback site (TopCashback, Quidco)
- Search for the retailer you want to shop with
- Click through to the retailer via the cashback site’s tracking link
- Complete your purchase on the retailer’s site (normally)
- The cashback site detects the sale via a tracking cookie
- The retailer pays the cashback site a commission
- The cashback site credits your account with a portion — your cashback
You pay the same price as going directly to the retailer. The cashback is funded by the retailer’s marketing budget, not by the cashback site charging you.
Cashback Rates — What to Expect
| Category | Typical cashback range |
|---|---|
| Energy switching | £15–£100 per switch |
| Broadband/TV switching | £30–£120 |
| Insurance purchases | 5–20% or fixed fee |
| Online grocery shops | 1–3% |
| Clothing and fashion | 3–10% |
| Electronics | 1–3% |
| Hotels and travel | 2–8% |
| Financial products (credit cards, loans) | £20–£100+ |
Rates vary and change frequently. Always check the current rate on the cashback site before purchasing.
Key Rules for Reliable Cashback
Do:
- Disable ad blockers when clicking through
- Complete the entire purchase in one session without opening new tabs
- Clear your browser cookies before clicking from the cashback site
- Start from the cashback site every time, even for retailers you’ve used before
Don’t:
- Use a voucher code from another site (often invalidates cashback)
- Open the retailer’s site in another tab before clicking from the cashback site
- Switch devices mid-purchase
Withdrawing Cashback
Most sites require a minimum balance before withdrawal (typically £1–£5). Withdrawal options:
- Bank transfer (standard)
- PayPal
- Gift cards (sometimes at better rates than cash)
Cashback typically enters your account as “pending” for 30–90 days while the retailer confirms the purchase and checks it was not returned.
Safety Considerations
- Never share your payment card details with the cashback site — all transactions happen on the retailer’s own secure checkout
- Use strong unique passwords for your cashback account (these accounts hold real money)
- Enable two-factor authentication if available
- Check FSCS/FCA status of any financial products recommended via cashback sites
For a direct comparison of the two main sites, see Quidco vs TopCashback UK. For money-saving apps more broadly, see Best Money-Saving Apps UK.
In-Store and Grocery Cashback — Different from Online
Standard cashback sites (TopCashback, Quidco) are primarily for online purchases. But there are cashback options specifically designed for physical in-store grocery shopping:
Shopmium and Checkoutsmart work differently from online cashback:
- Browse the app for current offers (usually specific branded products)
- Buy the product in any participating supermarket
- Scan the product barcode in the app (or photograph the receipt)
- Cashback is credited to your account, usually within hours
These are limited to specific products — typically branded goods — and the cashback per item is usually 50p–£2. But they stack directly with loyalty card discounts and Clubcard/Nectar Prices on the same shop.
Too Good To Go and OLIO are not cashback sites — they are food surplus platforms — but they operate on a similar principle of reducing the effective cost of food below retail price.
How to Maximise Your Cashback Returns
Stack when you can:
- Use a cashback site to buy insurance online → earn cashback
- Pay with a cashback credit card → earn card cashback
- Both apply simultaneously in most cases (check terms)
Prioritise high-value categories: The categories with the highest cashback rates are switching transactions (energy, broadband, insurance, financial products). A single broadband switch through TopCashback might earn £80–£120 — equivalent to months of grocery app use.
Set a cashback reminder: Before any significant online purchase or switching transaction, make it a habit to visit TopCashback first. A 30-second check can earn cashback you would otherwise leave on the table.
Use the browser extension: Both TopCashback and Quidco offer browser extensions that alert you when you’re on a site that has cashback available. This passive reminder catches purchases you might not have thought to check.
What Happens If Cashback Goes Missing
Occasionally cashback fails to track — usually due to ad blockers, cookie clearing, or using a discount code from another source. If you expected cashback and it doesn’t appear:
- Wait 7–14 days — some retailers take time to confirm sales
- If still missing, raise a “missing cashback” claim through the site’s claims process
- Provide evidence: date of purchase, order confirmation number, amount spent
- Resolution typically takes 4–8 weeks; most legitimate claims are paid
Both TopCashback and Quidco have published claims processes. The claim success rate for legitimate purchases is high — do not write off missing cashback without raising a claim.
See also: Quidco vs TopCashback UK and Best Money-Saving Apps UK.
For budgeting and expense tracking tools, see Best Money Apps UK — these are distinct from cashback tools but complement them.