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

Independent guide - not affiliated with or endorsed by Citi, Wells Fargo, Chase, Capital One or any other card issuer named here. Intro periods, rates and rewards change often; confirm current terms on the issuer's official site.

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 interest on. Cash back is a small percentage handed back on purchases. Picking the wrong one can cost you hundreds of 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

Credit card interest rates are high compared with most other consumer borrowing; you can see the current national averages in the Federal Reserve's G.19 consumer credit release. Flat-rate cash-back cards, by contrast, return a low single-digit percentage of what you spend.

So if you owe money, interest is charging you many times what cash back is paying you. A generous rotating-category card still can't out-earn a double-digit 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 spending 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 spend that $5,000 anyway. These figures are assumptions for illustration, not offers.

• Option A - cash-back card at an assumed 22% APR, 2% back. You earn $100 in rewards. Paying the $5,000 down evenly over 15 months at 22% costs roughly $760 in interest. Net: you're down about $660.
• Option B - 0% intro APR card for 15 months, no rewards. You pay $0 in interest if you clear the balance before the intro window ends. Net: $0.

Option B wins by hundreds of dollars. The $100 in rewards from Option A is real, but interest swamps it. The moment you stop carrying a balance, the comparison flips and Option A's $100 becomes free money.

Side-by-side

Compare current intro lengths and earn rates on the issuers' own pages and on our card comparison pages. The CFPB explains how long an intro rate can last and what happens after in its answer on introductory rates.

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 take one anyway, you've given up rewards for a benefit you'll never use.

Balance transfers usually cost a fee up front. The CFPB notes that a balance transfer fee can be charged even on a 0% offer. It's usually still worth paying against a high APR, but it isn't free. See our balance transfer guide.

New purchases may not share the 0% rate. On a balance transfer card, purchases can accrue interest even while the transferred balance is at 0%; the CFPB covers this in its answer on interest on new purchases after a balance transfer.

The intro rate ends on a hard date. Miss it and the regular APR applies to the remaining balance. Set a reminder two months before expiry and divide the balance by the months available so you finish in time.

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%.

What about buy now, pay later or a personal loan?

If you only need to spread one purchase, a point-of-sale installment plan can also be interest-free, but it works differently from a card; see buy now, pay later vs credit card. If the amount is large and you need longer than any intro period, compare a fixed-term loan in credit card vs personal loan.

Who should skip both

If your goal is travel, a flat cash-back card is the wrong tool, and a 0% card does nothing for it. A travel rewards card may out-earn cash back on the categories that matter to you; compare options in our best travel credit cards guide and the travel guides.

Think twice about a new 0% card if you're months from a mortgage or auto loan application, because a new account and a hard inquiry can affect your score at a bad time. And if you tend to max out 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 such as the Citi Double Cash or Wells Fargo Active Cash; check current terms on Citi's and Wells Fargo's official pages. Two tools, two jobs, used in the right order. Browse more in our best cash back credit cards guide.