Here is the link to my spreadsheet where you can calculate a loan over x years to be paid back monthly. It will give you the amortized payment amount.The tutorial shows how to build an amortization schedule in Excel to detail periodic payments on an amortizing loan or mortgage. The indepth Watch Me Build is a 25 minute behemoth, showing you how to build a more complex, dynamic amortization table in Excel. No. Due Date, Due Payment, Extra Payment (Recurring), Extra Payment (Irregular), Interest Paid, Principal Paid, Balance. I would like to be able to calculate the remaining amount of loan due after each payment on a loan with irregular payment dates and irregular amounts. Enter your normal mortgage information at the top of this calculator. You can optionally add your other homeownership expenses in the middle section. Under this new name, the College continues as one of nine colleges in the Los Angeles Community College District. Project schedule may result in the Engineer withholding progress (monthly) payments.