Create automatic loan amortization schedule table with PMT, IPMT, PPMT formulas in Microsoft Excel Download a Loan Amortization Table spreadsheet for Excel to create your own amortization schedule, table, or calculator.Free amortization spreadsheet. The tutorial shows how to build an amortization schedule in Excel to detail periodic payments on an amortizing loan or mortgage. 13, Payment number, Payment date, Beginning balance, Scheduled payment, Extra payment, Total This Excel spreadsheet makes it easy to view the amortization of a home loan with optional extra monthly payments. Adding extra principal payments in order to pay off the loan earlier than the loan contract calls for. In this tutorial we will add this feature. Enter your mortgage details here. Enter extra payment amount in relevant month rows.