The money order refund request form you need depends entirely on who issued the money order. The U.S. Postal Service uses PS Form 6401. Western Union offers an online refund portal for people who still have the receipt and a separate paper “Money Order Research Request” for those who don’t. MoneyGram provides a downloadable Money Order Search Form. Fees run from nothing on small Western Union refunds up to $30 for a lost-serial-number research request, and processing takes anywhere from about five business days to two months.
Match the Form to the Issuer
Check the face of the money order or your purchase receipt before you do anything else. Filing the wrong issuer’s form gets you nowhere.
USPS Postal Money Orders
PS Form 6401, titled “Money Order Inquiry,” is the document for requesting a refund or a copy of a cashed postal money order. Pick one up at any post office or download it from the USPS website. One form covers one money order, so multiple refunds mean multiple forms and multiple fees.1United States Postal Service. PS Form 6401 – Money Order Inquiry
One narrow exception: if the money order is physically damaged and you still have both the damaged instrument and the original receipt, your local post office can issue a no-fee replacement on the spot. PS Form 6401 is only required for formal inquiries, refunds on lost or stolen orders, and cases where you don’t have the receipt.2United States Postal Service. PS Form 6401 No Longer Required for Local Money Order Replacement Requests
Western Union Money Orders
Western Union runs two tracks. If you have the receipt (with its barcode) or the money order itself, submit through the online refund portal. The system verifies whether the money order has been cashed before it lets you proceed, and approved refunds are picked up at any Western Union agent location.3Western Union. Money Order Refund Request
If both the receipt and the money order are gone, you need the paper “Money Order Research Request.” It asks for the 11-digit serial number if you have it, the purchase amount, date, and location, and a purchaser signature. If theft is involved, attach a copy of the police report.4Western Union. Money Order Research Request
MoneyGram Money Orders
MoneyGram’s downloadable Money Order Search Form is built for cases where you don’t know the serial number. It asks for the exact purchase amount, exact purchase date, the payee’s name, the store where you bought it (with address and phone number), and your full contact information. An email address is required, and you must sign and date the form before submitting.5MoneyGram. MoneyGram Money Order Refund Request Form
What the Form Will Ask For
Every issuer wants the same core facts: the serial number, the exact dollar amount, the purchase date, and the location of purchase. The serial number matters most. Without it, the issuer has to run a manual search of transaction records, which takes longer and costs more.
Your original purchase receipt is where all of that information lives. It’s also your proof that you’re the buyer and that the instrument hasn’t been surrendered for payment. Photocopy it before sending anything in. If the original is lost during the claims process, you can end up starting over.
Filing Without a Receipt
Losing the receipt doesn’t end your claim, but it slows everything down.
For postal money orders, PS Form 6401 becomes mandatory when you don’t have a receipt, even for what would otherwise be a simple counter replacement. You go through the full inquiry process.2United States Postal Service. PS Form 6401 No Longer Required for Local Money Order Replacement Requests
Western Union’s online portal will accept “any other proof of purchase that you may consider necessary,” and the specific fallback the company names is the original store receipt combined with a police report referencing the money order number. With neither, the paper research request and its $30 fee are the only option left.3Western Union. Money Order Refund Request
MoneyGram’s search form is specifically designed for cases where the serial number is missing. Every field on the form matters, because the search runs by matching your details against MoneyGram’s records. Vague answers rarely produce a hit.5MoneyGram. MoneyGram Money Order Refund Request Form
Fees and How to Submit
Fees vary widely, and the differences are large enough to affect whether it’s worth pursuing small amounts.
USPS
The Postal Service charges $21.00 per inquiry. File PS Form 6401 at any post office window, or mail it to the St. Louis Accounting Service Center, PO Box 80453, St. Louis, MO 63180-0453. Each inquiry needs its own form and its own fee.6United States Postal Service. Sending Money Orders1United States Postal Service. PS Form 6401 – Money Order Inquiry
Western Union
For online portal refunds, fees are tiered by face value:
- $5 or less: no fee
- Above $5 but under $100: $5
- $100 or more: $15
These are deducted from the refund, not paid separately.7Western Union. Retail Money Order Terms and Conditions
The paper research request for a lost serial number costs $30, payable by money order or check to Western Union Financial Services, Inc. That fee is non-refundable regardless of outcome.4Western Union. Money Order Research Request
MoneyGram
MoneyGram’s refund fee varies by face value, and the company doesn’t publish a fixed schedule. The amount is shown after you start the request. A photocopy of a cashed money order (rather than a refund) costs $18.8MoneyGram. MoneyGram Money Order Frequently Asked Questions
If you’re mailing any of these forms, use a tracked delivery method. A lost submission means starting over, and the processing fee doesn’t come back.
How Long It Takes
USPS will issue a refund 60 days or later from the money order’s original issue date, or provide a copy of the cashed money order if it was already redeemed. The 60-day minimum applies even if you file the inquiry the day after purchase.1United States Postal Service. PS Form 6401 – Money Order Inquiry
Western Union’s online portal processes approved requests within five business days, after which you pick up the refund at an agent location. Approval or denial arrives by email.3Western Union. Money Order Refund Request The paper research request takes longer, with no guaranteed timeline. You’ll get one of three outcomes by mail: a photocopy if it was cashed, a refund if it wasn’t, or a notice that the money order couldn’t be located.4Western Union. Money Order Research Request
MoneyGram processes refund requests in about seven business days and emails a reference number for tracking.8MoneyGram. MoneyGram Money Order Frequently Asked Questions
If It’s Already Been Cashed
Once a money order has been cashed, a refund is off the table. Issuers won’t replace or refund a redeemed instrument. What you can get instead is a photocopy showing both sides, including the endorsement on the back. That photocopy is your main evidence for figuring out what happened.
Western Union charges $15 for the photocopy. Mail the completed request form with the fee (money order or check) to the address on your receipt.9Western Union. How Do I Request a Photocopy of My Cashed Money Order MoneyGram charges $18 for the same service.8MoneyGram. MoneyGram Money Order Frequently Asked Questions
If the endorsement shows someone other than the intended payee cashed it, you’re looking at possible theft or fraud. File a police report right away. It creates a record that can support a fraud investigation, and some issuers require one before they’ll release the photocopy or cooperate further. Recovering the money at that point usually means pursuing the person who cashed it, not the issuer.
Lost or Stolen Money Orders
A lost money order and a stolen one call for the same first move: file the refund request as fast as possible. Once someone cashes it, the issuer generally won’t refund you.
If you suspect theft, file a police report before or alongside your claim. Western Union’s research request form specifically asks for a copy of the report when theft is involved.4Western Union. Money Order Research Request Even where a police report isn’t strictly required, having one on file strengthens your position if a dispute comes up later.
For postal money orders, file PS Form 6401 at the post office as soon as you realize the money order is missing. The $21.00 fee applies, and the 60-day processing window runs from the original issue date, not from your filing date.1United States Postal Service. PS Form 6401 – Money Order Inquiry For Western Union and MoneyGram, use the online portals when you have the receipt, or the paper forms when you don’t.
Dormancy Fees and State Unclaimed Property
Holding an uncashed money order too long can quietly drain its value. USPS postal money orders are the exception: they never expire and never lose value, no matter how long they sit.6United States Postal Service. Sending Money Orders
Western Union works differently. After one year from purchase (three years in California), the company starts deducting a monthly service charge from the face value. The standard charge is $1.50, but it varies by state: $0 in Connecticut and Puerto Rico, $0.25 in California, $0.40 in Maryland, $1 in Texas, $2 in New Jersey starting in the 13th month, and a flat $12 per year in Minnesota. Total deductions max out at $126 or the state-law limit, whichever is less. A $200 money order can be fully depleted within roughly seven years.7Western Union. Retail Money Order Terms and Conditions
MoneyGram money orders also don’t technically expire but may begin losing value to service charges after about a year of inactivity. Check the back of the instrument for the specific terms.
There’s one more deadline to keep in mind. Under state unclaimed property laws, money order funds that go unclaimed for a set number of years (typically around five, though it varies by state) are turned over to the state’s unclaimed property program. After that, you claim the money from the state rather than the issuer. The money is still recoverable, but the process adds another layer to work through.