Fuel Tax Calculator

See how much you're paying in federal and state fuel taxes each month.

What you enter

• Gallons per Month
• Avg State Tax ($/gal)

DispatchTool automatically tracks fuel purchases and miles by state for hassle-free IFTA filings.

Frequently Asked Questions

What is the federal diesel fuel tax?

The federal diesel fuel tax is $0.244 per gallon. States add their own taxes on top, ranging from $0.08 (Alaska) to over $0.70 (California and Pennsylvania).

How does IFTA work with fuel taxes?

IFTA (International Fuel Tax Agreement) simplifies multi-state fuel tax reporting. You file one quarterly return and pay the net tax owed to states where you drove more than you fueled, or receive credits where you fueled more than you drove.

How can I reduce fuel tax costs?

Buy fuel in low-tax states when practical, maintain IFTA records meticulously, improve fuel efficiency through speed management and proper maintenance, and use fuel tax software like DispatchTool.