On August 26, HUD issued its final rule prohibiting mortgagees from charging post-payment interest under FHA’s single family mortgage insurance program. The final rule is responsive to the CFPB’s ATR/QM rule, under which post-payment interest charges will be considered a prepayment penalty in connection with FHA loans closed on or after January 21, 2015. Because prepayment penalties are prohibited on higher-priced FHA loans, the new definition of “prepayment penalty” under the ATR/QM rule would have effectively prohibited the making of higher-priced FHA mortgage loans. Also effective January 21, 2015, HUD’s final rule ensures consistency among FHA single-family mortgage products and provides the same protections for all borrowers. Under the final rule, monthly interest on the debt must be calculated on the actual unpaid principal balance as of the date prepayment is received.