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Semi-Annual Interest Rate Certification

Calendar Year 2020

In February 1997, the Fiscal Assistant Secretary of the U.S. Department of the Treasury delegated to the Bureau of the Public Debt (now the Bureau of the Fiscal Service) the responsibility of providing interest rate certification to various agencies.

The following table contains rates certified by Treasury for various statutory purposes.

(Updated January 4, 2021)
Legislation Effective Date
Jan - Jun 2020 Jul - Dec 2020
National Housing Act - Section 221(g)(4) 1-3/4% 5/8%
National Housing Act - Section 224 2-1/4% 1-1/4%
Alaska Native Claims Act - Public Law 94-204, Section 2(b) 0.16% 0.09%

*NOTE: The January — June 2020 National Housing Act rates have been revised.

**NOTE: Effective June 2014 and after, the Prompt Payment Act Interest Rate will no longer be posted on this website. To view the most recent Prompt Payment Act Interest Rate update and/or the related historical information, please visit For prompt payment questions only, please e-mail