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How to File Section 40 Fuel Taxes Online with Simple720
Oct 24 ,2025

How to File Section 40 Fuel Taxes Online with Simple720

Recap of Section 40 Fuels in Form 720

Section 40 covers second-generation biofuels that are sold but not used for their qualified purposes. If misused, producers must recapture a $1.01-per-gallon excise tax, reported under IRS Number 51 on Form 720. The rule ensures that credits claimed are reversed when fuels aren’t used as prescribed.

In this blog, we’ll walk you through a step-by-step guide to filing your Section 40 fuel taxes using our IRS-authorized e-file portal, Simple720, ensuring fast, accurate, and hassle-free submission.

Steps to file Section 40 Fuel Tax online using Simple720:

Step 1 - Create an Account: If you’re a new user, sign up for a free Simple720 account. Existing users can log in with their credentials.


Step 2 - Provide Business Details: For new users, the next step is to enter your business details. Click on “Add New Filings” and click on “Add New Business” and complete the required fields, including:

  • Business Name

  • Employer Identification Number (EIN)

  • Business Type (select from the drop-down options)

  • Business Contact Information

If you’re an existing user, simply select the stored business name from the database.


Step 3 - Choose Form Type: Select “Form 720 (Quarterly Federal Excise Tax)” as the form type. Accurately provide the tax year and quarter you are filing for, then click “Proceed.”


Step 4 - Select Section 40 Fuels Excise Tax: From the left menu, open Form 720, select Part II, and then choose Section 40 Fuels (51) to proceed with your filing.


Step 5 - Enter Filing Information: The fuel type is prefilled as “Second Generation Biofuel,” since this category exclusively applies to that fuel. Now, enter the quantity in gallons to proceed with your filing.


Step 6 – Auto Calculation: The tax amount is automatically calculated and displayed on the portal based on the tax rate of $1.01 per gallon and the quantity entered.


Step 7 - Choose a Payment Method: Review your information and choose one of the IRS payment methods:

  • Electronic Funds Withdrawal (Direct Debit)

  • EFTPS - Electronic Federal Tax Payment System


Step 8 - Complete Your Filing: Once the payment is completed, your Section 40 Fuels tax filing will be submitted within minutes.

You’ll receive instant IRS confirmation as soon as the IRS approves - no more waiting weeks for updates.


Conclusion

Filing your Section 40 fuel taxes through Simple720 ensures complete accuracy and quick IRS submission. With automated calculations and easy e-filing, producers can stay compliant without manual effort. The platform simplifies reporting and eliminates delays caused by paper filings. Stay compliant, save time, and file confidently with Simple720 - your trusted IRS-authorized e-file provider.

The IRS requires every filer to submit Form 720 electronically. File your Section 40 Fuel Taxes Online with Simple720 Portal today!