This article in Milliman’s GASB 73/74/75 miniseries discusses the development of the long-term expected rate of return assumption and the selection of the municipal bond rate, both of which are used to determine the single equivalent discount rate. The article also covers the technical details of calculating the money-weighted rate of return and provides a summary of the discount rate and other asset-related disclosures required by GASB 74 and 75.