Generally, each importer engaged in selling or other disposition or use of motor vehicle fuel in DC must file a monthly Motor Fuel tax return, form FR-400M. Persons who bring fuel for use such as in excavating equipment on a DC construction site must also file the FR-400M if that fuel is brought from outside DC and is not delivered by a DC licensed importer.
When and where should you file your form FR-400M?
Returns must be filed and any tax due must be paid by the 25th of the month following the month being reported. If the due date falls on a Saturday, Sunday, or legal holiday, the return is due the next business day. You must also file a return even if you have no tax liability for the next month.