J JE McGimpsey Nov 18, 2004 #2 One way: If you have the following information: A1: <annual interest rate> A2: <number of years> A3: <Principal amount> A4: =PMT(A1/2, A2*2, A3) The key is to make sure the rate and the periods are in sync - i.e., if you have 6-month periods, you need to have 6-month rates.
One way: If you have the following information: A1: <annual interest rate> A2: <number of years> A3: <Principal amount> A4: =PMT(A1/2, A2*2, A3) The key is to make sure the rate and the periods are in sync - i.e., if you have 6-month periods, you need to have 6-month rates.