Credit cashback and debit cashback look identical on the surface — a percentage back on what you spend. Under the hood, they're funded very differently, and that changes who they're right for.
Where the money comes from
Credit card rewards are funded largely by interchange — the fee merchants pay to accept the card. Credit interchange is high, which is why credit card rewards can reach 2%–6%. Debit interchange is capped by regulation for most banks, so debit cashback is usually 1% or less.
When credit wins
- You pay your balance in full every month.
- You want higher earn rates (2%+ flat, up to 6% on categories).
- You value purchase protections, extended warranty, and fraud liability.
When debit wins
- You want a hard spending limit — you can't spend money you don't have.
- You're rebuilding credit or don't want another credit line.
- The debit card offers targeted local rewards your credit card doesn't.
The honest answer
If you can trust yourself with a credit card and pay it off monthly, credit almost always wins on rewards. If a balance would tempt you to overspend, a cashback debit card is the responsible choice — and 1% back is still better than 0%.