The U.S. Department of the Treasury has issued the Obligation Interim Final Rule (IFR) to address funding recipients’ questions and comments regarding the definition of obligation. The Obligation IFR revises the definition of obligation in Treasury’s implementing regulations for the SLFRF/ARPA program and provides related guidance to give additional flexibility and clarity to recipients to support their use of SLFRF/ARPA funds. We advise referring to Treasury's two-page “Quick Reference Guide” which informally summarizes the seventeen-page Obligation IFR and Obligation IFR slide presentation.