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USPS domestic money orders never expire: a decades-old one still cashes at full face value. Western Union and MoneyGram money orders technically do not expire either, but both charge dormancy or service fees after a year or two of inactivity, which quietly reduces the value. Very old funds can end up in state unclaimed-property programs.
LetterAgent mails physical letters; it cannot issue or cash money orders. Here is what happens to an old one.
A USPS domestic money order is a federal instrument, and USPS states plainly that it never expires and never loses value. Find one from years ago in a drawer and you can cash it at face value at a post office or bank. This is the one case where age does not matter at all.
| Issuer | Expires? | What erodes the value |
|---|---|---|
| USPS domestic | Never | Nothing: face value is preserved indefinitely |
| Western Union | No expiration date, but dormancy fees apply | A monthly service fee kicks in after the inactivity period stated on the back of the instrument |
| MoneyGram | No expiration date, but service charges apply | A monthly charge begins after the dormancy period in the fine print, deducted from the face value |
| Bank-issued | Depends on the bank's terms | Banks set their own dormancy fee schedules; read the back of the instrument |
With Western Union and MoneyGram, the instrument does not become void on some date. Instead, after a set period of inactivity (typically a year or two, spelled out in the fine print on the back), the issuer starts deducting a small monthly service fee from the face value. A money order that sits in a drawer for five years may have lost a meaningful share of its value by the time it is cashed. The practical takeaway: cash Western Union and MoneyGram orders promptly, and if you have an old one, check the terms on the back before assuming the full amount is still there.
If fees grind the balance to zero, or if the money order sits untouched for many years, the remaining funds may be turned over to the state under unclaimed-property laws. Every state has a dormancy period after which unclaimed financial instruments get swept into the state's custody, and the clock is set by state law, not by the issuer. The money is not gone: you can search your state's unclaimed-property website and file a claim, usually at no cost. People regularly recover old money orders, uncashed checks, and forgotten utility deposits this way.
Banks sometimes get nervous about very old instruments because they cannot easily verify them, but a bank cannot declare a valid USPS money order expired. If a teller hesitates, the post office is the reliable cashing point. For private issuers, the issuer's own terms on the back of the instrument control, so keep the original paperwork. And if the issuer no longer exists, the state unclaimed-property office is still the fallback: dissolved companies' outstanding instruments get swept there too.
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