How UK cashback works — the four main types (gift card apps, cashback sites, cashback debit cards, card-linked offers), what each is best suited to, and the rules that stop cashback costing you money.
UK Cashback: How It Works and What to Watch For
How UK cashback works — the four main types (gift card apps, cashback sites, cashback debit cards, card-linked offers), what each is best suited to, and the rules that stop cashback costing you money.
By Scrimpr
Updated 21 Aug 2026
This is the main Scrimpr guide to cashback. Cashback can be an easy way to “save” on things you were going to buy anyway — but it’s never guaranteed, so it should never influence what you spend. There are ways to maximise your chances of it tracking properly, but what’s on offer changes all the time.
Cashback is a mechanic that returns a small percentage of what you spend to you — via cashback apps, cashback sites, cashback debit cards, or card-linked offers. Rates and payment timelines vary by type. This guide covers how each works, what they’re best suited to, and the rules that stop cashback from costing you money.
Cashback is a form of advertising — and that advertising money is better in your pocket than someone else’s.
How Cashback Works
Buy something for £100, get £3 back. That £3 is cashback. Sometimes it comes as cash, sometimes as a gift card, sometimes as credit on your account.
Cashback works because money is moving in the background every time you spend. Transactions involve multiple businesses earning along the way — for processing, for traffic, for the sale itself — and each takes a slice. That slice is already baked into the price you pay, whether you claim any of it back or not. Cashback platforms are middlemen sitting in those chains, and they share part of what they make with you instead of pocketing it all. The reason is simple: paying you directly is usually cheaper than acquiring you through traditional advertising.
This is the cornerstone of how the internet works. Almost every website you use earns from commissions and referrals like this — Scrimpr included. When you click a link with an * on this site and sign up to a platform, I get a small commission. The cashback platforms above share theirs back with you as cash; I share mine back as research, news, guides, and tools — including the Scrimpr Search Engine which surfaces cashback platform offers across the web, and the main site search which returns those alongside what I cover myself. Either way, you can see if any site I write about is also available as a paid cashback opportunity.
Ways to Earn Cashback
The four main types compared at a glance:
| Gift Card Apps | Cashback Sites | Cashback Cards | Card-Linked Offers | |
|---|---|---|---|---|
| Rates | 3-7% | 1-15% | Up to 2% | 1-15% |
| When you get paid | Instantly | 30-120 days | Monthly | Within days |
| Where it works | Online & in store | Online only | Everywhere | At participating retailers |
| Effort | Buy gift cards first | Click through links | Automatic | Activate offers in app |
| Best for | Supermarket shopping | Online purchases, switches | Everyday spending | Specific retailer deals |
When to use each type
- Gift card apps — for in-store shopping at supermarkets and on the high street, where traditional cashback sites can’t reach. You buy a gift card in the app at face value, use it at the till, and get instant cashback in your app account. My supermarket cashback comparison shows current rates for the big four; browse all gift card cashback offers for everything else.
- Traditional cashback websites — for big-ticket online purchases, service switches (broadband, energy, insurance), and bank switches where cashback can be £100+. TopCashback and Quidco lead the field on rates, but you’ll wait 30-120 days for the cashback to pay out — the retailer has to confirm the order isn’t being returned before they hand over the commission. For sign-up bonuses specifically, I track live offers across all sites in one place.
- Cashback debit cards — for everyday spending where you’d forget to claim any other way. Several UK providers offer cashback debit cards or current accounts with cashback features. Rates typically range from around 1% to 2%, with eligibility requirements and monthly caps.
- Card-linked offers — for stacking on top of everything else. They don’t compete with cashback sites, they pay alongside. Catch: most offers are retailer-specific and need activating in the app first.
- Receipt scanning apps — for bonus rewards on shopping you’ve already done. UK receipt scanning apps vary by which shops they cover — some specialise in supermarkets, others in dining.
How people typically start
The most common starting point is a cashback debit card or current account with cashback features — automatic on all spending, no effort to claim, and rates typically around 1–2%. See the UK options.
Beyond that, cashback users typically combine methods based on what they buy:
- Online shopping and service switches: cashback sites work best here, with rates often 5%+ on retailers and £50–£150+ on service switches (broadband, insurance, energy). Payment typically takes 30–120 days after purchase. TopCashback and Quidco are the two long-established UK sites, with broadly overlapping rates and the widest coverage of retailers.
- Supermarket and high-street in-store shopping: gift card apps work where cashback sites can’t reach. You buy a gift card in the app at face value, use it at the till, and get cashback (typically 3–7%) into your app account. EverUp and JamDoughnut are the main UK options.
- Everyday spending across the high street: card-linked rewards apps layer on top of everything else. Airtime Rewards pays cashback to your mobile bill on top of whatever your card already pays.
None of these are exclusive — most cashback users layer several methods depending on the purchase (see stacking cashback methods).
What UK households typically earn back
Here’s what real cashback rates look like right now for your weekly grocery shop:
Instant cashback rates last updated: 22 August 2026
| Gift Card | Instant Cashback | Via | |
|---|---|---|---|
Tesco
Best Rate
|
5.0% instant | TCB Giftcards.com | |
Marks & Spencer
|
5.0% instant | Airtime | |
Sainsbury's
|
3.5% instant | EverUp | |
Asda
|
3.2% instant | EverUp | |
Morrisons
|
1.9% instant | Freecash |
Your Potential Savings
Based on £6,000/year grocery shopping:
Best rate (Tesco via TCB Giftcards.com - 5.0%)
saves you £300/year
And here’s current cashback rates for online purchases at some of the most popular UK retailers:
Online cashback rates last updated: 22 August 2026
| Retailer | Best Cashback | Via | |
|---|---|---|---|
Argos.co.uk
Best Rate
|
10.0% online | TopCashback | |
boohoo.com
|
10.0% online | TopCashback | |
ASOS
|
6.3% online | TopCashback | |
eBay
|
3.4% online | Budgey | - |
Your Potential Savings
Based on £1,500/year online shopping:
Best rate (Argos.co.uk via TopCashback - 10.0%)
saves you £150/year
That covers £7,500 of typical household spending between groceries and online. If your spend in those categories is roughly that scale, the tables above show how much cashback is realistic without changing what you buy.
Worth knowing: Tesco gift cards work at Tesco Petrol Stations. Buy them at a discount through a gift card app and you’re effectively getting cashback on your fuel.
The Golden Rules of Cashback
Nine rules to make sure cashback actually saves you money — instead of costing you money.
It’s not cashback if you weren’t going to buy it anyway
Cashback is a discount on spending you’d already be doing — groceries, insurance renewals, a broadband contract you need. It is not a reason to buy something. 10% back on a £200 jacket you didn’t want is not £20 saved, it’s £180 spent. Start with what you actually need, then look for cashback on top.
Find the cheapest deal first, then check for cashback
Never let the cashback rate drive your choice of provider. A £370 car insurance policy with no cashback beats a £470 policy with £100 cashback every time — the £100 saving is locked in at checkout, while the cashback might take six months to land, get rejected, or never arrive. Use comparison sites to find the best price, then check if your chosen provider is on TopCashback or Quidco. This matters most for big-ticket items like insurance, broadband, and energy switches, where the wrong provider can cost £100+ more than any cashback you’d earn.
Click the cashback link first, then add to basket
The link sets a tracking cookie — last cookie wins, so if you visit the retailer directly first, the cookie may not be set at checkout and you’ll get nothing. Click through from the cashback site, then go straight to the product and checkout without detours.
Test tracking with a small purchase
Before a big-ticket buy, do a smaller purchase as a test first. If tracking shows in your cashback account within 48 hours, the setup works on your browser and device. If it doesn’t, fix it before spending hundreds.
Be prepared to wait
Cashback usually isn’t instant. Tracking usually appears within 24–72 hours, but the cash itself stays “pending” until the retailer confirms the sale and pays the cashback site — typically 30–60 days for retail purchases, and 3–6 months for travel, insurance, and broadband. Don’t chase missing cashback until the stated payable date has passed, and don’t ever budget around cashback. The exception is gift card apps like JamDoughnut and EverUp, which pay instantly because you’ve already paid upfront.
Check the retailer’s voucher-code terms — and use a code if you can
Some retailers void cashback if any discount code is applied; others stack happily. Check the cashback site’s retailer page before using a code, but where codes don’t void cashback, always apply one — a guaranteed discount at checkout beats a promised cashback payment that might not track, might get rejected, or might take six months to land. More on stacking codes with cashback →
Don’t use coupon-finder browser extensions
Honey and similar tools insert their own tracking link at checkout, which overrides the cashback site’s tracking. Disable them on cashback purchases.
Use a fresh tab or incognito window
Old cookies from previous browsing can interfere with cashback tracking. Start clean for each cashback purchase, and accept cookies when the retailer asks — rejecting them can break tracking too.
Withdraw your earnings
Don’t leave money sitting in cashback accounts. Smaller cashback sites have gone bust before, and if that happens you’re an unsecured creditor with little chance of recovery. Even with the big players, terms change — cash out as soon as you hit the minimum.
How Cashback Companies Actually Make Money
Once you understand the mechanism behind each type of cashback, two things become obvious: why some are free and some charge a fee, and why the rates vary so much. Here’s what’s actually happening behind the scenes.
Cashback websites (TopCashback, Quidco)
The simplest model. You go to TopCashback, click their link to Argos, then complete your purchase. Argos pays TopCashback a commission for sending the customer. TopCashback keeps a cut and passes the rest back to you. They make extra money from premium tiers (TopCashback Plus is £5/year and boosts your rates) and from small interest on the cashback they hold while it’s pending payout.
Cashback debit cards
Every time you tap your card, the retailer pays an interchange fee to the card network — typically 0.2–1.5% depending on the card type. The card issuer takes a slice of that, and on a cashback card they pass some of it back to you. The “cashback” is really the issuer using their interchange revenue as a customer-acquisition tool — paying you to use their card instead of a competitor’s.
Gift card apps (EverUp, JamDoughnut)
Different model entirely. Retailers sell gift cards to bulk buyers (corporate gifting, employee schemes, app distributors) at a wholesale discount of typically 5–10%. Apps like EverUp buy cards in bulk at that wholesale price, sell them to you at face value, and pass part of the discount to you as instant cashback. The “rate” you see is essentially the bulk-discount margin minus the app’s cut.
Card-linked apps (Airtime Rewards, Amex Offers)
Your linked card gets used at a participating retailer; the retailer pays the card-linked platform a performance fee for the tracked sale. The platform shares most of that with you. Airtime specifically also has a separate commercial deal with mobile networks to redeem rewards as bill credit — that’s how they get their margin on the redemption.
Receipt scanners (Shopmium, Clear, Google Opinion Rewards)
Three quite different models. Shopmium runs brand-funded rebates: the brand pays for product trials and Shopmium hands the rebate to you. Clear sells your anonymised receipt data to market researchers and shares about a third of the revenue back. Google Opinion Rewards uses receipts to trigger location-based surveys, paying you small amounts while building data for Google’s market research products.
Paid membership cashback (NX Rewards, Complete Savings)
The most quietly aggressive model. They charge £18/month after a free trial, and combine standard affiliate commissions with a friction-based revenue stream — most members forget to claim back the monthly fee, so the £18 becomes pure profit. If you actively claim it back each month, the membership is effectively free and you keep the cashback you earn. If you forget, the platform makes its money from you.
The pattern across all of them: none of these companies are giving you free money. They’re all earning from your transaction in some way, and they’ve decided paying you to use their service is worth more than keeping the whole margin. The ones that charge fees do so because the maths works for them — and only some of the time for you.
Frequently Asked Questions
The most common questions about UK cashback.
Is cashback actually worth it?
Yes, especially on purchases you’d make anyway. Typical UK households can save £100-300+ a year through cashback without changing what they buy. The trick is being consistent and using cashback for every eligible purchase, not just occasional ones.
Which cashback site is best in the UK?
TopCashback and Quidco are the two largest. TopCashback typically tops or ties Quidco’s rates for online retail; Quidco often wins on utility and broadband switches. Most regular users sign up to both and check rates per purchase.
Are cashback sites safe?
Yes — established sites like TopCashback and Quidco are legitimate businesses that have been operating for years. They make money from retailer commissions and share part of it with you. Stick to well-known platforms and check reviews before joining newer sites.
How long does cashback take to process?
Tracking typically appears within 24-72 hours, but the wait until cashback is actually payable varies by retailer — from a few weeks to several months. Retail shopping pays out in 2-4 weeks; travel and financial services can take 3-6 months.
Why isn’t my cashback showing up?
Common causes: ad blockers, coupon-finder browser extensions like Honey (they override the cashback tracking), old browser cookies, or visiting other tabs mid-purchase. Fix by disabling extensions, using an incognito window, and completing the purchase in one go. If it still doesn’t track, file a missing cashback claim on the site.
Can I use discount codes with cashback?
Sometimes. Some sites approve specific voucher codes and let cashback stack; others void the cashback if any code is applied. Always check the cashback site’s retailer page before using a code. More on stacking codes with cashback →
Do cashback rates apply to VAT and delivery charges?
Varies by retailer. Some calculate cashback on the total spend (including VAT and delivery), others only on the product price. The cashback site’s retailer page usually clarifies which.
What happens if a retailer goes bust before cashback is paid?
If a retailer goes into administration before paying commission to the cashback site, you’ll likely lose the pending cashback. This is why “accelerated” cashback options (lower rate, but paid out faster) are sometimes worth taking on troubled retailers.
Is cashback taxable in the UK?
For most users, no — HMRC treats cashback as a discount on a purchase rather than income. If you’re earning substantial amounts from referral bonuses or operating as a business, it may be taxable. Check with a tax professional if you’re unsure.
