Most advice about unused cards worries about the card. This is the rarer problem that runs the other way: the card owes you. A refund, an overpayment, or a rewards credit can leave real money sitting on an account you never look at — and the clock that governs whether you ever see it again is shorter than almost anyone realises.

The short answer

A credit balance is money the issuer owes you, and federal law puts a clock on it. Regulation Z forces a refund within seven business days of a written request, and a good-faith refund attempt after six months. If that attempt fails because you've stopped reading the statements, the balance escheats to your state — typically after a three-to-five-year dormancy period — where it waits, indefinitely, for you to come looking.

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What a credit balance actually is

A credit card normally carries a debit balance: you owe the bank. A credit balance is the reverse — the account shows a negative number because the bank owes you. It is your money, parked inside someone else's ledger, earning nothing.

Four things create one on a card you've stopped using:

  • A refund that lands after you paid to zero. You return a $260 jacket, the statement was already settled, and the merchant credit drops the balance to −$260. (The refund also fails to reset your inactivity clock — a separate trap covered here.)
  • An overpayment. A duplicate payment, or autopay firing on a balance you'd already cleared by hand.
  • A reversed fee. An annual fee or interest charge the issuer claws back after you'd paid it, on a card you then set aside.
  • A statement credit you never spent down. Redeeming rewards "as a statement credit" on a zero-balance card doesn't bank the money for later — it creates a refundable credit balance, the same as cash the bank owes you.

Why a dormant card is exactly where this hides

An active card gets looked at. You open the app, you scan the statement, a −$260 line jumps out and you spend it down or call for a cheque. A dormant card gets none of that attention — that's what makes it dormant. The statement still generates every month; you just don't open it.

So the credit balance sits. The issuer's paper statements pile up at an address you may have moved away from. The emails route to a folder you don't read. The one account most likely to be holding your forgotten money is, by definition, the one you've stopped watching — which is precisely why the protections below quietly fail for the people they're meant to protect.

Regulation Z: the seven-day right and the six-month clock

Credit balances aren't governed by the issuer's goodwill. They're governed by federal law — Regulation Z, 12 CFR § 1026.11(b), the rule that implements the Truth in Lending Act. When a credit balance over $1 sits on your account, the issuer must do three specific things:

  1. Credit it to the account. The balance is applied against future purchases automatically — fine if you use the card, useless if you don't.
  2. Refund within seven business days of a written request. This is the lever most people never pull. Put the request in writing and the issuer has roughly a week and a half to send your money back by cheque.
  3. Make a good-faith effort to refund anything left for more than six months. After half a year untouched, the issuer is obliged to try to return the balance on its own — usually by mailing a cheque to the address on file.

The phrase that decides everything is "good-faith effort." The rule explicitly excuses the issuer when it cannot reasonably locate you. A cheque mailed to a three-addresses-ago apartment satisfies the obligation even if it never reaches you. The protection is real, but it routes through exactly the contact details a dormant-card holder is most likely to have let go stale.

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After six months: how the money escheats to the state

If the issuer's good-faith refund fails and the balance keeps sitting, it doesn't vanish and the bank doesn't get to keep it. It becomes unclaimed property, and a second body of law takes over: your state's escheatment statute.

Every state requires holders of abandoned funds — banks, issuers, insurers — to report and hand over property that's gone untouched for a set dormancy period. For this kind of account credit, that period is commonly three years, and five in some states. When it expires, the issuer remits your credit balance to the state treasurer's unclaimed-property division and washes its hands of it.

This is the detail the dormancy literature usually waves away. You'll read that credit cards "don't hold positive balances to escheat" — true for the ordinary card you spend on, false for the forgotten one carrying a refund. The exception is small in dollars per account and enormous in aggregate: state unclaimed-property offices collectively hold tens of billions, and credit-card credit balances are a recurring line in their intake.

A credit balance won't keep the card alive

Here's the cruel symmetry. You might assume that money sitting on the account counts as activity — that a live credit balance signals an engaged customer. It doesn't. The inactivity review tracks posted outbound transactions, and a credit balance is the opposite of that: it's an inbound amount the bank owes you.

So a dormant card can carry your $260 and get closed for inactivity in the same quarter. When the closure posts, it actually accelerates the refund — closing an account with a credit balance obliges the issuer to return it. But the cheque, again, goes to the address on file. A closure you didn't notice, sent to a home you've left, is the exact recipe for a balance that ends up at the state.

How to get your money back

Three scenarios, in order of how long the money's been gone.

The balance is still on an open card

Don't wait for the six-month clock. Send a written refund request — secure message or letter, not just a phone call, so you trigger the seven-business-day rule cleanly. Or simply make a purchase that spends the balance down to zero, which doubles as the posted charge that keeps the card off the inactivity list.

The card was closed and you suspect a balance

Call the issuer and ask whether a credit balance was outstanding at closure and where the refund was sent. If the cheque went to an old address, ask them to void and reissue it. Issuers keep these records for years; the money is still owed.

It's been years — check the state

Escheated funds are held indefinitely, with no deadline to claim. Search your name (and former addresses) at MissingMoney.com, the official multi-state database endorsed by the National Association of Unclaimed Property Administrators, or your state treasurer's site directly. File the claim, prove your identity, and the state pays out. You lose the years of use, not the principal — and never pay a "finder" who offers to do it for a cut.

The cheaper habit: keep the card in your line of sight

Every protection above is a recovery mechanism — it assumes the money already slipped away. The way to never need them is duller and more reliable: keep the account active enough that you actually look at it. A card with a small monthly charge generates a statement you have a reason to open, an app you check, a balance line you'd notice turning negative. The same activity that prevents dormancy closure keeps your own money from disappearing into a state database for three years.

One forgotten refund is rarely life-changing. But it's your money, the clock on it is shorter than you think, and the failure mode is silent — which is the through-line of every dormant-card problem worth writing about.