You pay off a credit card. The balance hits zero. Your first instinct is to close the account — get it off your plate, simplify your financial life, maybe cut up the physical card for the tactile satisfaction of it. This impulse is completely understandable and almost always wrong.
The keep-vs-close decision is one of those places where the emotionally correct move and the mathematically correct move point in opposite directions. Let's sort out when each one actually applies.
The Two Levers a Closed Card Pulls Against You
When you close a credit card, two things happen to your credit score — and both move in the wrong direction.
The first is utilization. Credit utilization — the ratio of what you owe to what you have available — accounts for roughly 30% of your FICO score. Close a card, and you lose that card's credit limit from your available total. If you're carrying any balances on other cards, your utilization ratio goes up automatically, even though your actual debt didn't change. The CFPB recommends keeping utilization below 30%, and under 10% is better still.
The math here is concrete. Say you have two cards: one with a $5,000 limit and a $0 balance (the one you just paid off), and one with a $5,000 limit and a $2,000 balance. Your current utilization is 20% ($2,000 out of $10,000 available). Close the paid-off card, and your utilization jumps to 40% ($2,000 out of $5,000 available) — past the threshold lenders prefer, from a single account closure that involved no new spending.
The second lever is account age. Length of credit history makes up roughly 15% of your FICO score, based on factors like the age of your oldest account and the average age of all your accounts. Closing a card doesn't immediately erase it — a closed account in good standing can stay on your report for up to 10 years. But once it falls off, your average account age recalculates, and if it was one of your older cards, the hit can be meaningful.
The combined effect: closing a card can drop your score by roughly 10 to 50 points, depending on your overall profile. That's not catastrophic, but it's real — and it's entirely avoidable.
When Keeping It Open Stops Making Sense
None of this means you should hoard every card you've ever opened. There are two situations where closing actually makes sense.
The annual fee no longer pays for itself. If a card charges a fee and you're not using it enough to recoup that cost in rewards or benefits, you're paying for a credit score prop. That's a bad trade. Before closing, though, check whether a no-fee version of the same card exists — many issuers will let you downgrade to a basic version, which preserves the account age and credit limit without the ongoing cost. Worth a five-minute phone call.
The card is a spending trigger. If keeping a card open means you'll use it in ways that create new debt, the credit score math becomes irrelevant. A 30-point score drop is recoverable. A cycle of revolving debt is much harder to unwind. This is one of those cases where the "right" financial answer depends entirely on your own behavior patterns, not just the numbers.
The Move Most People Skip
Before closing or keeping a card you're not using, there's a third option that most people don't try: call the issuer and ask for a retention offer. Card companies would rather keep you as a customer than lose you, and they sometimes offer fee waivers, bonus points, or statement credits to cardholders who call and say they're considering closing the account. It takes ten minutes and occasionally works.
If you're keeping the card open, use it occasionally — a small recurring charge works fine. Some issuers will close inactive accounts on their own, which removes the choice from your hands and still affects your score.
The Decision in Plain Terms
The CFPB's credit score framework is clear that scores reflect behavior patterns across multiple factors simultaneously. Closing a card touches at least two of those factors at once. That's why the default answer is: keep it open, use it lightly, and only close it when the cost of keeping it (in fees or spending temptation) clearly outweighs the score impact.
The score hit from closing is temporary. The annual fee you pay every year to keep a card you don't use is permanent. Run that comparison over a two- or three-year window, and the right answer usually becomes obvious.