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Recordkeeping: clean heating fuel credit

When claiming this credit, you must keep the following required documentation for your records:

  • copies of all bills from the suppliers
  • copies of all invoices from the suppliers
    • Invoices must include:
      • date of purchase
      • number of gallons of bioheating fuel purchased
      • percentage of biodiesel included in the bioheating fuel
  • organizational chart that includes entity names, identification numbers, and percentage of ownership

Note: We may require additional information based on the specific facts of your credit claim. 


To claim the credit, you’ll need to file either:

  • Form CT-241, Claim for Clean Heating Fuel Credit, if you’re a corporation; or
  • Form IT-241, Claim for Clean Heating Fuel Credit, if you’re not a corporation.

See Clean heating fuel credit for detailed information about the credit and to access the credit forms.

Updated: