To return a money order, bring the uncashed money order and your original purchase receipt back to the issuer that sold it — USPS, Western Union, or MoneyGram — either at a retail location or by mail with the correct refund or inquiry form. How much you pay and how long you wait depends on the issuer, whether you still have the receipt, and whether the money order is in your hands or lost.
What You Need Before You Start
Every issuer asks for the same core items:
- The original money order, uncashed and undamaged.
- The purchase receipt — the detachable stub from the sale. For USPS money orders, the receipt carries the serial number, Post Office number, and dollar amount needed to check status or file a claim.1USPS. Money Orders – The Basics
- The correct form. USPS uses PS Form 6401 (Money Order Inquiry), which must be filled out in black ink with the serial number, date of purchase, and exact dollar amount. Western Union uses its Money Order Refund Request form for buyers who have a receipt. MoneyGram provides its own refund request form through its website.2USPS. PS Form 6401 – Money Order Inquiry3Western Union. Money Order Refund Request
- Government-issued photo ID to confirm you are the original purchaser.
Lost the receipt? The refund still exists, but it costs more and moves slower. USPS makes you mail the money order and PS Form 6401 to its St. Louis Accounting Service Center.1USPS. Money Orders – The Basics Western Union and MoneyGram charge higher research fees to trace the transaction without a serial number.
Returning an Unused Money Order You Still Have
For a USPS money order, take the instrument and receipt to any Post Office. A retail associate helps you complete PS Form 6401, confirms the money order has not been cashed, and processes the return. If the money order is simply spoiled or made out to the wrong person, USPS reissues a replacement on the spot at no charge when you bring both the money order and the receipt.1USPS. Money Orders – The Basics
There is a cash cap at the counter. Post Office locations refund cash up to $35. For anything higher, the clerk issues a no-fee replacement money order or forwards the request to the administrative Post Office.4About USPS. Handbook F-101 Revision: Increased Cash Refund Limit Even smaller refunds depend on how much cash the clerk has on hand that day.1USPS. Money Orders – The Basics
For Western Union and MoneyGram money orders, some retail locations that sell them can process the refund on site; others will point you to mail or online submission. Ask the store where you bought it first.
If you have to mail your documents, send them certified with return receipt so you can prove delivery, and photocopy both sides of the money order and the receipt before it leaves your hands. USPS money orders returned without a receipt go to:
St. Louis Accounting Service Center
General Accounting Branch
PO Box 80453
St. Louis, MO 63180-04531USPS. Money Orders – The Basics
Western Union accepts refund requests online or by mail when you have the receipt.3Western Union. Money Order Refund Request MoneyGram accepts refund requests through its website or by mail with the applicable fee.5MoneyGram. Refund
If the Money Order Is Lost or Stolen
You can still get your money back, but the issuer has to investigate before paying. That means a fee, a form, and a wait.
USPS
Bring your purchase receipt to any Post Office and ask a retail associate to open a Money Order Inquiry on PS Form 6401. The processing fee is $21.00. USPS then checks whether the money order has been cashed; if it has not, you get a replacement. The investigation can take up to 60 days.6USPS. Money Orders USPS does not offer stop payments on postal money orders — the inquiry is the only route.1USPS. Money Orders – The Basics You can check status by calling 1-866-974-2733.2USPS. PS Form 6401 – Money Order Inquiry
Western Union
If both the money order and the receipt are gone, submit a Money Order Research Request form with a $30.00 non-refundable administrative fee, paid by check or money order. The form asks for the exact purchase amount, date, time, and store location. If the money order was stolen, include a copy of the police report. Processing runs six to eight weeks, and if the money order has not been cashed you may receive a refund of the face amount.7Western Union Financial Services, Inc. Money Order Research Request
MoneyGram
Without the serial number, MoneyGram requires a search form and a $40.00 non-refundable processing fee. You provide the exact purchase amount, exact date, payee name, and the store name and address. Signing the form authorizes MoneyGram to stop payment and agrees to hold it harmless for related expenses. The search takes up to 60 days. If the money order has not been cashed, MoneyGram issues a refund you can pick up at any MoneyGram location.8MoneyGram. Money Order Search Form
If It Has Already Been Cashed
Once someone cashes your money order, the face-value refund is off the table. What you can still get is a photocopy of the cashed instrument showing who endorsed and deposited it, which can support a police report or a fraud claim. For USPS money orders, photocopies are available only for two years from the date the money order was cashed, and you still pay the inquiry fee to get one. No claim for improper payment on a USPS money order is permitted more than one year after the money order was paid.1USPS. Money Orders – The Basics
Fees and Processing Times at a Glance
USPS
Inquiry fee for a lost or stolen money order: $21.00.6USPS. Money Orders Spoiled or damaged money orders with the receipt are replaced free.1USPS. Money Orders – The Basics Investigations take up to 60 days, and USPS issues a refund 60 days or later from the money order’s issue date if it has not been cashed.
Western Union
With a receipt, refund fees are tiered by face value: no fee for $5 or less, $5 for $5.01 to $99.99, and $15 for $100 or more, deducted from the refund.3Western Union. Money Order Refund Request Without a receipt, the research request costs $30.00 upfront and takes six to eight weeks.7Western Union Financial Services, Inc. Money Order Research Request
MoneyGram
Standard refund requests with a receipt take about seven business days, with a processing fee deducted from the refund.5MoneyGram. Refund Without the serial number, the fee is $40.00 non-refundable and processing runs up to 60 days.8MoneyGram. Money Order Search Form
Old Money Orders and Unclaimed Property
USPS domestic money orders do not expire and do not accrue interest, so the instrument itself carries no cash-by date.6USPS. Money Orders Western Union and MoneyGram may follow different policies; check with the issuer for an older instrument.
State unclaimed property laws are the real deadline. Every state requires financial institutions to turn over abandoned assets, including uncashed money orders, after a dormancy period that typically runs one to five years depending on the state and type of property. Once the issuer sends the funds to the state treasury, the issuer can no longer refund you; you would file an unclaimed property claim with that state. Most states allow those claims indefinitely, but you have to verify ownership through the state’s program.9Investor.gov. Escheatment If a money order has been sitting in a drawer for years, act now rather than adding a state claim to the process.