S&P Global Ratings assigned its 'AAA/A-1+' dual rating to Iowa Finance Authority's (IFA) $20 million series 2021E (social bonds) single-family mortgage bonds (mortgage-backed securities [MBS] program). At the same time, we revised our rating to 'AAA/A-1+' from 'AAA' on IFA's $20 million series 2022E single-family mortgage bonds. At the same time, we affirmed our 'AAA' long-term and 'AAA/A-1+' and 'AAA/A-1' dual ratings on the other applicable variable-rate series bonds outstanding under IFA's 1991 single-family mortgage bond resolution. The outlook is stable. Bonds issued within the 1991 resolution are general obligations (GOs) of IFA, payable from the revenue, assets, and money pledged under the master indenture on a parity basis with all other obligations outstanding under the master indenture. The bonds