The goal of this is to create a worksheet that through inputs and a series of formulas, be a basis of an expandable tool, that you can use to create project an amortization schedule. The spreadsheet should be able to do various calculations using automated formulas. Fully amortizing, partially amortizing (balloon), partial interest only or Interest only (bullet). there should be no balance or payment of interest past the term or error messages Yield with or with out closing costs. Interest Only periods. should be fully formula driven Able to change loan amount, amortization period, term length, interest rate. calculate date of each payment calculate the sum of interest and principal for calendar or loan year Actual vs 360 payments. Average life Duration