Fortunately, Excel can be used to create an amortization schedule. The amortization schedule template below can be used for a variable number of periods, as well as extra payments and variable interest rates.
Example of Amortization In the first month, $75 of the $664.03 monthly payment goes to interest. The remaining $589.03 goes toward the principal. The total payment stays the same each month, while the portion going to principal increases and the portion going to interest decreases.