On November 26, 2025, the Office of Management and Budget (OMB) issued the 2025 Compliance Supplement. The Supplement outlines the compliance requirements to assist auditors in understanding the Federal program’s objectives, procedures and requirements when performing a Single audit for fiscal years beginning after June 30, 2024. The Compliance Supplement is normally issued in the spring of each year; however, OMB delayed its issuance to incorporate significant updates to 2 CFR 200, Uniform Administrative Requirements, Cost Principles, and Audit Requirements for Federal Awards, in October 2024. In order to assist auditors with the different requirements, Part 3 Compliance Requirements of the Supplement was divided into two Parts for audit testing as follows:
- Part 3.1 for awards subject to 2 CFR 200 prior to October 2024 and
- Part 3.2 for awards after October 1, 2024
