Enter values, Loan summary. The tutorial shows how to build an amortization schedule in Excel to detail periodic payments on an amortizing loan or mortgage.Loan Amortization Schedule outlines the interest and principal payments owed on a mortgage, including the outstanding balance. This Microsoft Excel template illustrates how to create a loan amortization schedule, as well as dealing with additional payments and variable interest rates. Keep track of your loan schedule and try this Loan Amortization Table Template. This is a great tool to use when looking at the financial impact of a loan.