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Aviation Fuel Sales and Use Tax

Use MyTax Illinois to electronically file Form ST-70, Aviation Fuel Sales and Use Tax Return, and Form ST-70-X, Amended Aviation Fuel Sales and Use Tax Return. These forms are not available for download.

Name Description   
  MyTax Illinois
ST-70-C Sustainable Aviation Fuel Purchase Credit Certification - (N-06/23)
ST-70-PROD Producer Certification of Sustainable Aviation Fuel (SAF) - (N-06/23)
ST-70 Instr. Aviation Fuel Sales and Use Tax Return Instructions Note: For reporting periods July 2023 and after. (R-07/23)
ST-70-X Instr. Amended Aviation Fuel Sales and Use Tax Return Instructions Note: For reporting periods July 2023 and after. (R-07/23)
ST-71 Instr. Multiple Site Form Instructions Note: For reporting periods January 2021 and after. (R-06/20)
ST-72-Instr. Sustainable Aviation Fuel Purchase Credit Form Note: For reporting periods July 2023 and after. (N-07/23)
ST-70 Instr. Aviation Fuel Sales and Use Tax Return Instructions Note: For reporting periods January 2021 through June 2023. (R-06/20)
ST-70-X Instr. Amended Aviation Fuel Sales and Use Tax Return Instructions Note: For reporting periods January 2021 through June 2023. (R-06/20)
ST-70 Instr. Aviation Fuel Sales and Use Tax Return Instructions Note: For reporting periods December 2020 and before. (R-12/19)
ST-70-X Instr. Amended Aviation Fuel Sales and Use Tax Return Instructions Note: For reporting periods December 2020 and before. (R-12/19)
ST-71 Instr. Multiple Site Form Instructions Note: For reporting periods December 2020 and before (N-12/17)