GAS-1259, Motor Fuels Backup Tax Return (for January 2023 and after) for January 2023 and after GAS-1259, Motor Fuels Backup Tax Return Documents Gas-1259 12-8-22 web_v1_Final.pdf Gas-1259 Instructions web 12-7-22_v2_5%_Final.pdf gas-1259ds_web_1-17.pdf