IFTA Reference

U.S. Annual Interest Rates

Review the annual IFTA interest rate for fleets based in a United States member jurisdiction, along with supporting IRS revenue bulletins and calculation examples.

United States rate

Annual IFTA Interest Rate

The IFTA rate is two percentage points above the applicable IRS underpayment rate.

9%Latest annual rate

U.S. Interest-Rate History

Prior to July 1, 2013: 12%
Effective DateIRS Underpayment RateIFTA Annual Interest Rate
01/01/26 7% 9%
01/01/25 7% 9%
1/1/2024 8% 10%
1/1/2023 6% 8%
1/1/2022 3% 5%
1/1/2021 3% 5%
1/1/2020 5% 7%
1/1/2019 5% 7%
1/1/2018 4% 6%
1/1/2017 4% 6%
1/1/2016 3% 5%
1/1/2015 3% 5%
1/1/2014 3% 5%
7/1/2013 3% 5%
Supporting documents

IRS Revenue Bulletins

2025-37 2024-37 2023-37 2022-35 2021-37 2020-39 2019-39 2018-39 2017-39 2016-39 2015-39 2014-86 2013-40 2012-39
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