0% APR or Cash Back: Which Should You Prioritise?

Short answer: if you're carrying a balance, or about to, prioritise a 0% APR card. If you pay your statement in full every month, prioritise cash back. Interest is a guaranteed cost; rewards are a discount on spending you'd do anyway. One of those numbers is almost always bigger than the other, and it's usually the interest.

The trap is treating them as the same kind of perk. They're not. A 0% intro APR is a temporary loan you don't pay to use. Cash back is a small percentage handed back on purchases. Picking the wrong one can cost you a couple hundred dollars in a single year, so the decision turns almost entirely on one question: will you carry a balance?

Why the balance question settles it

Run the numbers and the gap is obvious. As of mid-2026, the average credit card APR sits somewhere around 21-22% (confirm the current figure on the issuer's site, since rates move with the Fed). Flat-rate cash back cards mostly pay 1.5-2%.

So if you owe money, interest is charging you roughly ten times what cash back is paying you. No rewards rate marketed today closes that gap. A 5% rotating-category card can't out-earn a 22% APR on a balance you're rolling over month to month.

This is why the order matters. Kill the interest cost first with a 0% intro period. Then, once you're paying in full, switch your everyday spend to a rewards card.

A worked example

Say you've got $5,000 in purchases you need to finance over 15 months, and you'd otherwise spend that $5,000 anyway.

• Option A - Cash back card at 21.99% APR, 2% back. You earn $100 in rewards on the $5,000. But financing $5,000 over 15 months at ~22% costs you roughly $650-$700 in interest. Net: you're down about $550-$600.
• Option B - 0% intro APR card for 15 months, 0% back. You earn nothing in rewards. You pay $0 in interest if you clear the balance before the intro window ends. Net: $0.

Option B wins by roughly $550, and it isn't close. The $100 in rewards from Option A is real, but it's swamped by interest. The moment you stop carrying a balance, the comparison flips and Option A's $100 becomes free money.

Side-by-side

Want to see current intro lengths and rates next to each other? Our side-by-side compare tool lines them up, and the cash back category hub sorts cards by ongoing rate.

The trade-offs nobody puts on the front of the offer

0% APR is worse if you don't need it. Plenty of these cards earn little or no rewards. If you pay in full and grab one anyway, you've taken a card that gives you nothing in exchange for a benefit you'll never use. That's the clear downside.

Balance transfers usually cost 3%-5% up front. Moving $5,000 might cost $150-$250 before any interest is saved. Still worth it against a 22% APR, but it's not free, and a few cards cap or limit how much you can transfer.

The intro rate ends on a hard date. Miss it and the regular APR - often 20%+ - hits the remaining balance. Set a reminder for two months before expiry. As of 2026 the longest intro windows run around 18-21 months; verify the exact term on the issuer's official page, because advertised lengths change quarterly.

Cash back is worse if it nudges you to spend more. Earning 2% on a purchase you wouldn't otherwise make is still losing 98%. The reward only counts on spending you'd do regardless.

Who should skip both

If your goal is travel - flights, hotels, transferable points - a flat cash back card is the wrong tool, and a 0% card does nothing for it. A travel rewards setup like the Chase Sapphire Preferred or Capital One Venture X will out-earn 2% cash back on the categories that matter to you. Check the travel category hub instead.

Skip the 0% card if you're months from a mortgage or auto loan application - opening new credit and running up a transferred balance can dent your score at the worst time. And if you've got a habit of maxing whatever limit you're given, a 0% card is a slow-motion bill, not a fix. Deal with the spending first.

The practical play

Most people end up wanting both, just not at once. Use a 0% intro card to clear existing debt or float a big planned purchase. Once the balance is gone and you're paying in full, route everyday spending to a cash back card like the Citi Double Cash or Wells Fargo Active Cash. Two tools, two jobs, used in the right order. See how the leading options stack up on our all cards page, and read how we rate them on the methodology page.