01The honest version first
Cashback won't clear your debt. Let's get that out of the way.
If you're earning £10 to £30 a month back on spending you were doing anyway, that's real money. It is not a debt strategy. Anyone telling you to "earn your way out of debt" with cashback apps is selling something.
But here's where it does matter. £20 a month, swept straight onto your smallest debt, can take real months off your debt-free date. The trick is treating cashback as found money that goes to one place, not as a reason to spend more.
So this article does two things. First, the UK apps worth the effort: TopCashback and Quidco for online shopping, JamDoughnut and Airtime Rewards for everyday spending, and Sprive if you have a mortgage. Then how to turn what they save you into a faster payoff.
02What cashback actually is (and the catch)
Cashback apps pay you a small percentage of what you spend, either through an online shopping portal, a linked card, or gift cards you buy at a discount.
The catch is simple. Every one of them makes money when you spend. The good ones save you money on things you'd buy regardless. The bad ones nudge you into buying things you wouldn't have, which leaves you worse off even with the cashback. Knowing the difference is the whole game.
03The cashback apps, by what they actually do
They're not interchangeable. Each type works differently, and the smart move is stacking one from each. No affiliate links here, picked on what each is good at.
Online shopping portals: TopCashback and Quidco. You click through to a retailer from their site, buy as normal, and a percentage comes back weeks later. TopCashback is the biggest in the UK with 5,000+ retailers and the most reliable tracking. Quidco is the close competitor with a near-identical model. Best for planned purchases like insurance renewals, broadband switches and big one-off buys, where rates can be £20 to £100+. For everyday shopping the amounts are small.
Instant gift-card cashback: JamDoughnut and Cheddar. You buy a discounted digital gift card in the app and spend it straight away, in-store or online. The cashback is instant, not weeks later. JamDoughnut is the strongest for weekly supermarket shops, often 3 to 7% back. Cheddar runs a similar model with a growing retailer list. This is the type that quietly adds up on spending you had to do anyway.
Set-and-forget card-linked: Airtime Rewards, Chase and Curve. Link a card once and earn small percentages automatically on partner spend, no clicking through required. Airtime Rewards builds up and comes off your phone bill, the best passive option. Chase pays cashback on everyday debit spend, though rates and intro periods change often, so check the current terms. Curve gives Curve Cash on selected retailers through one linked card. Modest amounts, but you don't have to think about it.
Goal-routed cashback: Sprive. Sprive is the odd one out. Instead of cash back to your account, it routes shopping cashback (up to around 15% at brands like Tesco, M&S and Amazon, credited within about 15 minutes) plus spare cash straight into your mortgage overpayments. Core features are free. Genuinely good app, but the order matters: if you're still carrying credit-card or loan debt, that's far more expensive than your mortgage. Clear the high-interest stuff first, then Sprive earns its place.
Cashback credit cards (American Express and similar): skip these for now. The cashback is real, but it only works if you clear the full balance every single month. Carry a balance even once and the interest wipes out a year of rewards. If you're here to get out of debt, a cashback credit card is a risk you don't need.
04How much you'll realistically make
Honest numbers, not the headline ones the apps advertise.
A typical UK user who uses one or two of these on spending they were already doing earns somewhere between £10 and £30 a month. Heavy users with big planned purchases through the portals can do better in a given month, but that's lumpy, not steady.
So treat £15 to £20 a month as a sensible expectation. Not life-changing. But £20 a month is £240 a year, and if it all goes onto one debt, it pulls your debt-free date forward.
05The one trap to avoid
Cashback turns into a problem the moment it changes what you buy.
"It's 5% back" is not a reason to buy something. A £40 thing you didn't need still costs you £38 after cashback. You're not up £2, you're down £38. The apps are built to make spending feel like earning. It isn't.
The rule: only count cashback on money you were going to spend anyway. Everything else is just spending with extra steps.
06Making your money go further
Cashback is one small lever. Here are the bigger ones, in rough order of what they're worth:
- Find the lowest price first with HotUKDeals. It's not a cashback app, it's a community where people post the best live prices and discount codes. The useful trick: the comments almost always flag which cashback site is paying the most on that deal right now. Get the price down on HotUKDeals, then click through your cashback portal. Two discounts on one purchase.
- Switch your expensive bills. Energy, broadband, mobile, insurance. A single insurance or broadband renewal switched at the right time can beat a year of grocery cashback. Compare on uSwitch or MoneySavingExpert, and before you commit, check whether TopCashback or Quidco pay cashback for switching through them too. Same switch, comparison saving plus cashback.
- Cancel what you're not using. Subscriptions are the quiet leak. Apps like Emma or Snoop list your recurring payments so you can see the total. Most people find £20 to £40 a month they'd forgotten about. See our best debt payoff tools guide for how to find them.
- Move your payoff money before you can spend it. A bank pot or space scheduled for payday takes your debt payment out of reach the moment you're paid. Here's how to set it up.
None of these is dramatic on its own. Stacked together, they free up real money every month. The question is what you do with it.
07Send it all to one debt
Here's the part the cashback apps won't tell you.
Found money disappears if it lands back in your current account. £20 of cashback, £30 of cancelled subscriptions, £25 off your switched broadband: that's £75 a month that quietly gets re-spent unless you give it a job.
The job is one debt. Your smallest balance, or your highest rate. Whatever you free up goes there, on top of the minimum, until it's gone. That's the snowball: one target at a time, not spread thin.
See exactly what an extra £75 a month does to your debt-free date. Add your debts to the free calculator and watch the date move. No signup, no email, under a minute.
If you can't cover your minimum payments, a cashback app isn't the answer. Call StepChange on 0800 138 1111 for free debt advice.