The tutorial shows how to build an amortization schedule in Excel to detail periodic payments on an amortizing loan or mortgage. Loan period in years, 1, Actual number of payments, 10.Loan Amortization Schedule outlines the interest and principal payments owed on a mortgage, including the outstanding balance. A Loan Amortization schedule breaks down each payment into its interest and principal components for the full term of the loan. This spreadsheet creates an amortization schedule for a fixed-rate loan, with optional extra payments. This financial planning calculator will figure a loan's regular monthly, biweekly or weekly payment and total interest paid over the duration of the loan.