Create a printable amortization schedule with dates to see how much principal and interest you'll pay over time. The tutorial shows how to build an amortization schedule in Excel to detail periodic payments on an amortizing loan or mortgage.A loan amortization schedule is calculated using the loan amount, loan term, and interest rate. Free template with formulas. This example teaches you how to create a loan amortization schedule in Excel. 1. We use the PMT function to calculate the monthly payment on a loan.