Motor Fuels Filing Program

Filing Information for Taxpayers Menu

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Registered users login on this page to file the following tax forms:

  • Supplier of Diesel Fuel Tax Return (Form CDTFA-501-DD).
  • Supplier of Motor Vehicle Fuel Tax Return (Form CDTFA-501-PS).
  • Aircraft Jet Fuel Dealer Tax Return (Form CDTFA-501-MJ).
  • Terminal Operator Information Report (Form CDTFA-506-PO).
  • Petroleum Carrier Report (Carrier Summary Report) (Form CDTFA-506-PC).
  • Diesel Fuel Ultimate Vendor Report/Claim for Refund (Form CDTFA-770-DV).
  • Diesel Fuel Tax Claim for Refund - Sales to Ultimate Purchasers (Form CDTFA-770-DVW).
  • Claim for Refund on Nontaxable Sales and Exports of Diesel Fuel (Form CDTFA-770-DZ).
  • Diesel Fuel Claim for Refund on Nontaxable Uses (Form CDTFA-770-DU).

Click here for more information about the Motor Fuels Electronic Filing Program.

Motor Fuel Tax Filing Program

Enter your username and password then click Submit to login.



Both username and password are case sensitive.



Scheduled Downtime
In order to perform basic maintenance on the CDTFA website, the system will be unavailable for Motor Fuels Filing access from Sunday at 7:00 p.m. to Monday at 5:00 a.m., Pacific Time. Since this is regularly scheduled downtime, Online Participants should be aware that the CDTFA will not accept the participant's inability to submit a timely filing because of this downtime as a valid reason for granting relief of any penalty and/or interest that may result from a late filing.