What is ACCRINTM function in Excel? ACCRINTM function is one of the Financial functions in Microsoft Excel that returns the accrued interest for a security that pays interest at maturity. Syntax of ACCRINTM function ACCRINTM(issue, settlement, rate, par, [basis]) The ACCRINTM function syntax has the following arguments: Issue: The security’s issue date. Settlement: The security’s maturity date. Rate: The security’s annual…