How unused credit cards affect your credit history (and how to protect them)

Why people keep cards they do not use

Older accounts anchor your average age of accounts. Unused lines add to total available credit, lowering utilization on cards you actually spend on. That helps scores and approval odds.

The trap: a card you keep only for history is exactly the kind issuers close for inactivity.

The cost of losing a old line

A closure removes that credit limit overnight. If it was one of your oldest accounts, score impact can linger even with other healthy habits.

Keep the history, add the activity

The fix is not 'use it for real spend' — it is regular posted activity, however small, plus autopay so you never carry a balance. That preserves the account without changing your spending habits.