What is COUPDAYSNC function in Excel? COUPDAYSNC function is one of the Financial functions in Microsoft Excel that returns the number of days from the settlement date to the next coupon date. Syntax of COUPDAYSNC function COUPDAYSNC(settlement, maturity, frequency, [basis]) The COUPDAYSNC function syntax has the following arguments: Settlement: The security’s settlement date. The security settlement date is the date after…