S&P Global Ratings assigned its 'AAA' long-term rating to Iowa Finance Authority 's $60 million series 2025C nonalternative-minimum-tax social bonds and roughly $63.93 million series 2025D taxable single-family mortgage bonds (the mortgage-backed securities [MBS] program). At the same time, S&P Global Ratings affirmed its 'AAA' long-term rating and 'AAA/A-1+' and ?AAA/A-1' dual ratings on the authority?s other applicable variable-rate series bonds under IFA?s 1991 single-family mortgage bond resolution. The outlook is stable. Bonds issued under the 1991 resolution are a general obligation (GO) of the authority, payable from revenue, assets, and money pledged under the master indenture on a parity basis with all other obligations outstanding under the master indenture. The authority?s GO pledge also secures the bonds. The short-term