The Affordable Housing Incentives Act modifies federal tax law to encourage property owners to sell land for affordable housing development. When a property owner sells real property to a qualified affordable housing operator, such as a government agency, nonprofit housing organization, or community development group, they can defer paying taxes on any profit from the sale, similar to how involuntary conversion rules currently work. The property must be restricted by legal covenant to remain affordable housing for at least 30 years, must be appraised and sold at or below that appraised value, and the transfer must be reported to the Treasury Department within 90 days. The Treasury Department is responsible for monitoring compliance with the affordability requirements through audits every five years during the 30-year period. The bill takes effect immediately upon enactment and applies to all future property sales meeting these criteria.