Create automatic loan amortization schedule table with PMT, IPMT, PPMT formulas in Microsoft Excel The tutorial shows how to build an amortization schedule in Excel to detail periodic payments on an amortizing loan or mortgage.A little formula creation trouble and how to figure out some logic to fix your formulas and custom number formatting. Fill in the column titled "Period" with your payment dates. Input the month and year for the first payment loan within cell A8. This calculator will help you figure out your regular loan payments and it will also create a detailed schedule of payments. This Excel spreadsheet makes it easy to view the amortization of a home loan with optional extra monthly payments. In this video I'm going to show you how you can use Microsoft Excel to conduct a fairly straightforward exercise in loan amortization.