Who can file for a Missouri gas tax refund and what it covers

Missouri allows certain businesses and organizations to recover the state gas tax they paid on fuel used for specific purposes. The refund covers the state excise tax on gasoline and diesel, but only when that fuel was used off-road or for exempt purposes — not for driving on public highways.

You can file for a refund if you used fuel for farming, commercial fishing, or certain industrial and manufacturing processes. Nonprofit organizations, schools, and government entities may also be may be able to access if they used fuel for non-highway purposes. The key is that the fuel must have been purchased with the state tax already included, and you must have records showing how it was used.

Individuals who drive personal vehicles on public roads cannot file for this refund. The refund exists because the gas tax is meant to fund road maintenance — if you did not use the road, you should not pay that tax.

Key Takeaways

  • Only businesses, farms, nonprofits, and government entities using fuel for off-road or exempt purposes can file; personal vehicle use does not may have access to.
  • You must file with the Missouri Department of Revenue using Form MO-1 (Gasoline and Diesel Fuel Tax Refund Claim) and provide fuel purchase receipts and records of how the fuel was used.
  • The refund covers only the state excise tax portion of what you paid at the pump, not federal tax or the base fuel cost.
  • You can file once per calendar year, and the department typically processes claims within 30 to 60 days of receipt.
  • Keep detailed records of fuel purchases and usage for at least three years in case the department requests documentation.

What documents you need to gather before filing

Start by collecting all fuel purchase receipts or invoices from the calendar year you are claiming. These must show the date, amount of fuel purchased, price paid, and the seller's name. If you bought fuel in bulk or through a fuel account, ask your supplier for a year-end statement that breaks down total gallons purchased.

Next, you need records proving how the fuel was used. For farms, this might be equipment maintenance logs, fuel tank records, or a written statement describing which vehicles or equipment used the fuel and when. For manufacturing or industrial use, keep production records or equipment logs that show the fuel was burned in a process, not used to power highway vehicles. If you are a nonprofit or school, document the specific non-highway purpose — for example, fuel used to heat a building or power a generator during an outage.

The Department of Revenue may ask to see these supporting documents, so organize them by month or by equipment. Do not send originals with your claim; keep those for your records and provide copies if requested later.

How to complete and submit Form MO-1

The refund claim form is Form MO-1: Gasoline and Diesel Fuel Tax Refund Claim, available on the Missouri Department of Revenue website. You can file by mail or online through the department's system.

On the form, you will enter your business name, tax identification number (federal EIN or Missouri tax number), and the calendar year for which you are claiming the refund. Then list the total gallons of gasoline and diesel fuel purchased during that year. The form will calculate the refund amount based on the state tax rate in effect for that year — currently 17 cents per gallon for gasoline and 17 cents per gallon for diesel, though rates can change.

You must certify that the fuel was used for an exempt purpose and that you have not already claimed a refund for the same fuel. Sign and date the form. If you are filing on behalf of an organization, the person signing must have authority to do so — typically an owner, officer, or designated representative.

Mail the completed form to the Missouri Department of Revenue, Fuel Tax Section, or file it online if you have a Missouri tax account set up. The mailing address is on the form itself. Keep a copy for your records.

Timeline and what to expect after you file

After the department receives your claim, it typically takes 30 to 60 days to process. During this time, staff review your form for completeness and may contact you if information is missing or unclear. Respond promptly to any requests for additional documentation.

If your claim is approved, the refund is issued by check mailed to the address on your form. The check arrives separately from your claim confirmation. If the department denies your claim, you receive a written explanation of why — usually because the fuel use did not meet the exempt criteria, or because documentation was insufficient.

You can file only once per calendar year. If you have fuel purchases from multiple years, you must file separate claims for each year, but you can submit them all at once.

Common reasons claims are delayed or denied

The most frequent issue is incomplete documentation. If your receipts do not clearly show the fuel purchase amount or date, or if you cannot provide records of how the fuel was used, the department will ask for clarification. Vague statements like "farm use" without specific equipment or activity details often trigger follow-up requests.

Another common problem is mixing taxable and non-taxable fuel use. If you bought fuel in bulk and used some of it on public roads and some off-road, you can only claim the off-road portion. You must be able to separate these amounts or estimate them reasonably — the department will not accept a claim for 100 percent of fuel if any of it was highway use.

Claims are also denied if the filer does not meet the exempt-use categories. Personal vehicle owners, for example, cannot claim even if they drove mostly on private property. The exemption is tied to the type of entity and the type of use, not to the road surface.

What the refund amount actually covers

The refund reimburses only the Missouri state excise tax on fuel, not the federal excise tax or the base cost of the fuel itself. The state tax rate is 17 cents per gallon for both gasoline and diesel. So if you purchased 1,000 gallons of fuel for an exempt purpose, your refund would be $170 (1,000 gallons × $0.17).

The refund does not include sales tax or any markup your fuel supplier charged. It covers only the state excise tax that was embedded in the pump price. If you paid $3.50 per gallon, the refund reflects only the 17-cent state tax portion of that price, not the other 33 cents of federal tax or the remaining cost.

Keep in mind that the state tax rate can change from year to year. If you are filing claims for multiple years, each year's refund is calculated using the rate that was in effect during that calendar year.

How to keep records for future claims and audits

Store fuel purchase receipts and usage records for at least three years. The Missouri Department of Revenue can audit claims going back several years, and you will need to produce these documents if selected. Organize them by year and by fuel type (gasoline versus diesel) to make the audit process faster.

For ongoing operations, set up a straightforward log: date, gallons purchased, price per gallon, total cost, and the equipment or purpose the fuel was used for. This takes minutes per entry and saves hours if you need to reconstruct the information later. Digital records (photos of receipts, spreadsheets, or accounting software exports) are acceptable as long as they are legible and complete.

If you use a fuel supplier that provides monthly or annual statements, request one each year and keep it with your tax records. These statements often show total gallons and total cost, which can serve as a backup to individual receipts if some are lost.

Frequently Asked Questions

Can I file a refund claim for fuel I bought more than one year ago?

You can file for any calendar year within a reasonable lookback period, but the department typically processes claims for the current and prior year most quickly. If you are claiming for fuel purchased three or more years ago, contact the department first to confirm the claim will be accepted and what documentation they will need.

What if I do not have all my original receipts?

If receipts are lost, you can provide a written statement describing the fuel purchases and use, supported by other records such as fuel supplier statements, equipment maintenance logs, or bank statements showing fuel purchases. The department may accept a reasonable estimate if you can show the basis for it, but having some documentation is much stronger than none.

Do I have to pay sales tax on the refund I receive?

No. The refund is a recovery of tax you already paid, not income. You do not owe sales tax or income tax on the refund amount itself. However, consult your accountant about how to record the refund in your business books for tax purposes.

Can a nonprofit file for a gas tax refund on fuel used to heat its building?

Yes, if the fuel was purchased with the state gas tax included and was used for a non-highway purpose like heating. Nonprofits, schools, and government entities are among the categories that can file. You will need to document the fuel purchase and show that it was used for the building or other exempt purpose, not for vehicles driven on public roads.

What happens if I file a claim and the department asks for more information?

Respond to the request within the timeframe given — usually 10 to 30 days. Provide the documents or clarification they ask for. If you cannot locate something, explain what happened and provide what you do have. Delays in responding can slow processing or result in a denial, so prioritize the request.