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, TotalThis 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. Loan Amortization Schedule, This spreadsheet creates an amortization schedule for a fixed-rate loan, with optional extra payments. This calculator will help you figure out your regular loan payments and it will also create a detailed schedule of payments. Make math easier with these free calculator templates. Fill in the column titled "Period" with your payment dates. Input the month and year for the first payment loan within cell A8.