Notice 2023-65 provides guidance on the new energy efficient home credit under section 45L of the Internal Revenue Code (§ 45L credit), as amended by the Inflation Reduction Act of 2022. The § 45L credit is allowed to an eligible contractor that constructs a qualified new energy efficient home (qualified home) that is acquired by a person from the eligible contractor for use as a residence during the taxable year. A qualified home is a dwelling unit located in the United States, the construction of which is substantially completed after August 8, 2005, that meets the energy saving requirements of § 45L(c). The applicable amount of the credit is contingent on which set of energy saving requirements the dwelling unit meets, and is $500, $1,000, $2,500, or $5,000. For certain dwelling units that meet the prevailing wage requirements of § 45L(g), the $500 amount is increased to $2,500 and the $1,000 amount is increased to $5,000. The energy saving requirements of § 45L(c) incorporate certain Energy Star program requirements (available on an Environmental Protection Agency (EPA) webpage) and certain zero energy ready home program requirements (available on a Department of Energy (DOE) webpage).