January 27, 2023 IRS issues guidance on optional safe harbor method of accounting for real estate developers In Revenue Procedure 2023-09, the IRS provides new rules and conditions for implementing the "Alternative Cost Method," a safe harbor method of accounting that real estate developers may use to determine when common improvement costs may be included in the basis of individual units of real property in a development project to determine the gain or loss from sale of the units. This guidance obsoletes Revenue Procedure 92-29. A Tax Alert is forthcoming. Published by NTD’s Tax Technical Knowledge Services group; Carolyn Wright, legal editor | ||||