The tutorial shows how to build an amortization schedule in Excel to detail periodic payments on an amortizing loan or mortgage. To reach the formula for compound interest, you algebraically rearrange the formula for CAGR.Loan Amortization Schedule outlines the interest and principal payments owed on a mortgage, including the outstanding balance. Just convert the "daily compound interest" into "effective monthly interest". This Microsoft Excel template illustrates how to create a loan amortization schedule, as well as dealing with additional payments and variable interest rates. This example teaches you how to create a loan amortization schedule in Excel. 1. We use the PMT function to calculate the monthly payment on a loan. Loan amortization schedule green modern-simple. I'm building a custom loan amortization table so I can track various loans of mine, primarily my car loans and student loans. Both are rendered inaccurate.