Missouri Form 4923-H is the form drivers use to claim a refund on eligible Missouri motor fuel taxes. The form itself is not especially complicated, but the tedious part is keeping receipts organized, pulling the gallons and seller details from each one, and getting everything onto the form accurately before the filing deadline. This guide walks through exactly what the form is, who needs it, how to fill it out step by step, the mistakes that get claims delayed, and when it's due.
What is Missouri Form 4923-H?
Form 4923-H is Missouri's Highway Use Motor Fuel Refund Claim form for rate increases. It is used by eligible claimants to request a motor fuel tax refund for qualified gallons purchased during the applicable claim year.
In practical terms, it is the document that turns a year's worth of gas receipts into an actual refund request. That is why most people do not struggle with the form itself as much as they struggle with the recordkeeping required before they ever reach the form.
Who needs to file Form 4923-H?
Anyone who purchased fuel at a Missouri station for a qualifying highway-use vehicle during the claim year can generally file. You do not need to be a Missouri resident and your vehicle does not need Missouri plates — eligibility is tied to where the fuel was purchased, not where you live or where the vehicle is registered.
If you're not sure whether your situation qualifies, see our full breakdown of Missouri gas tax refund eligibility requirements for what the DOR actually requires.
Step-by-step: how to fill out Form 4923-H
The quick-answer steps above cover the process at a glance. In practice, most of the real work happens before you ever open the form: collecting every eligible receipt, confirming each one is from a Missouri station, and sorting them by vehicle so the per-vehicle gallon totals are accurate.
Once your receipts are organized, filling in the form itself is mostly transcription — claimant and mailing details at the top, vehicle information next, then a line-by-line list of purchases with the date, gallons, and seller name and address for each. Some versions of the form also ask for sensitive information near the end, like Social Security or banking details, depending on how you choose to receive the refund.
You can download the official Form 4923-H PDF directly from the Missouri DOR, and the DOR also has a walkthrough video on how to fill it out if you'd rather follow along step by step.
What information does Form 4923-H need?
To complete Form 4923-H correctly, you need your claimant details, mailing information, vehicle information, and receipt-level fuel purchase details. That usually includes the purchase date, gallons purchased, seller name, seller address, and which vehicle the fuel was used in.
You may also need to finish a few sensitive fields at the end, such as Social Security or bank information, depending on how you want to submit the claim. FuelBack MO keeps those sensitive final fields out of the normal receipt workflow and lets you fill them at the last step on your own device.
Common mistakes that slow down or delay a 4923-H claim
A handful of avoidable errors account for most of the back-and-forth on these claims: receipts from non-Missouri stations mixed in with eligible ones, gallons or dates that don't match the receipt, purchases not clearly assigned to a vehicle, missing seller name or address, and math errors in the per-vehicle gallon totals.
An unsigned form or a claim year mismatch — reporting a purchase under the wrong claim year — are two more common causes of delay. Double-checking each of these before you send the form is the single best way to avoid a slower turnaround.
When is Form 4923-H due?
The Missouri claim year for fuel purchases runs July 1 through June 30. Once that purchase period closes, the filing window opens July 1 and runs through September 30 — so you generally have three months after the purchase year ends to submit your claim.
Filing early in that window, as soon as your records are ready, is the safest approach. Waiting until the last days of September leaves no room to fix a mistake or a missing receipt before the deadline passes.
Where and how to submit Form 4923-H
Missouri does not currently offer a public online e-filing portal for Form 4923-H — claims are submitted by mailing the completed, signed form to the Missouri Department of Revenue, or by email if the DOR has provided that option for your claim. The form itself includes the DOR's current mailing address and submission instructions, so always confirm those details directly on the version of the form you download.
Keep a copy of the completed form and your original receipts after you submit. The DOR's guidance is to retain your supporting documentation for a period after filing in case your claim is reviewed.
Why Form 4923-H feels harder than it should
The biggest headache is not the PDF. It is the manual process leading up to it: saving receipts, making sure they are from Missouri stations, keeping them grouped by vehicle, watching for duplicate uploads, and manually keying all of that data into a claim packet later.
That is exactly the gap FuelBack MO is built to close. Instead of waiting until filing time and sorting through a pile of receipts, you snap photos throughout the year, let the platform extract the important fields, and then review the results when you are ready to file.
How FuelBack MO helps with Form 4923-H
FuelBack MO reads receipt photos, tracks gallons by claim year and vehicle, flags likely duplicates, shows what still needs review, and generates a completed Form 4923-H packet.
From there, you review the finished form, attach the generated PDF to the prewritten email, and send it to the Missouri Department of Revenue. If you prefer, you can also print the completed form and mail it in.