Does anyone have a template for a loan amortization schedule with interest accruing as of origination but payments deferred 6 months? Create automatic loan amortization schedule table with PMT, IPMT, PPMT formulas in Microsoft ExcelThe tutorial shows how to build an amortization schedule in Excel to detail periodic payments on an amortizing loan or mortgage. This spreadsheet creates an amortization schedule for a fixed-rate loan, with optional extra payments. 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. I need to build an amortization schedule for a 30year loan. It's based on 12 payments and the loan documents have the payment amount. Enter your loan details in the green boxes. 5. Loan Amount, Interest Rate, Term in Years.