Cashback sites, rewards cards, and loyalty points promise free money for spending you’d do anyway — and sometimes that’s exactly what they are. But the same tools are also carefully designed to make you spend more than you meant to, at which point the “rewards” cost you far more than they pay. So are cashback and rewards actually worth it? The honest answer is: yes, if you use them one way, and no, if you use them another. Here’s how to tell the difference and come out ahead.
Key takeaways
- Rewards are worth it only on spending you’d do anyway and paid off in full — never as a reason to spend more.
- A rewards credit card you don’t clear each month loses you far more in interest than it earns.
- Cashback sites are genuinely free money on purchases you’d make regardless — just don’t let them prompt extra buys.
The one rule that decides everything
Every rewards scheme is worth it or worthless depending on a single test: are you spending money you were going to spend anyway, or is the reward making you spend more? Cashback and points on your normal, planned spending are a genuine bonus — free money for doing nothing different. The moment you buy something extra, choose a pricier option, or spend to “hit a bonus,” the reward has flipped into a cost. Keep that test in mind and the whole subject gets simple: reward your existing spending, never let it grow it.
Rewards credit cards: great, unless you carry a balance
A cashback or rewards credit card can genuinely pay you to spend — but only under strict conditions:
- You pay it off in full every month. The interest on even a small carried balance dwarfs any cashback you earn — it’s not close.
- The rewards fit your real spending. A card that rewards categories you actually use beats a flashier one you don’t.
- Any annual fee is outweighed by what you genuinely earn — do the maths honestly, not hopefully.
Used this way, the card is a tool that pays you. If a balance ever lingers, the rewards are a trap — clearing the debt comes first, always, as covered in paying off debt fast.
Cashback sites and apps: usually a genuine win
Cashback websites and apps pay you a percentage back when you shop through them, and for planned purchases they’re close to free money — you were buying anyway, so a rebate is pure upside. The catch is the same as ever: they’re designed to nudge you toward more shopping with tempting “deals.” Use them by deciding what you need first, then checking whether cashback is available on it — not by browsing the cashback site for things to buy. Stack a cashback site with a rewards card on a purchase you were always going to make, and you earn twice on the same spend.
Loyalty points and the “spend to save” illusion
Loyalty schemes are fine when they reward shopping you’d do regardless, but be wary of the ones that push you to “spend a bit more to earn a reward.” That framing is designed to grow your spending, and the reward is almost never worth the extra outlay. Collect points on your normal purchases, redeem them, and ignore the prompts to chase tiers. It’s the same discipline as stopping impulse spending — the scheme should follow your spending, never lead it. Whatever you genuinely earn is worth sweeping into savings so it becomes real progress, not just more spending money.
Frequently asked questions
Are cashback credit cards worth it?
Only if you clear the balance in full every month. When you do, cashback on your normal spending is genuine free money. But if you ever carry a balance, the interest charged vastly outweighs any cashback earned, turning the card into a loss. The card must reward spending you’d do anyway and be paid off monthly — under those conditions it pays you; otherwise it costs you.
Do rewards programmes make you spend more?
They’re designed to, yes — bonuses for hitting a spending threshold, “earn more” prompts, and cashback sites full of deals all nudge you toward extra purchases. They’re only worth it if you resist that and reward spending you’d have done regardless. Decide what you need first, then apply the reward. If a scheme is making you buy more, it’s costing you, not paying you.
Use the one test on everything: reward the spending you’d do anyway, and never let a reward talk you into spending more. Pay any card in full, check cashback on planned purchases only, and sweep what you earn into savings. Done that way, rewards genuinely pay you — done the other way, they quietly cost you.
