To add a monthly escrow amount to the loan amortization schedule in Excel, you can follow these steps: Insert a new row below the last payment row. The tutorial shows how to build an amortization schedule in Excel to detail periodic payments on an amortizing loan or mortgage.This spreadsheet-based calculator creates an amortization schedule for a fixed-rate loan, with optional extra payments. This tutorial will teach you how to create a mortgage calculator and amortization schedule in Microsoft Excel. In this tutorial we will see how to create an amortization schedule for a fixed-rate loan using Microsoft Excel and other spreadsheets. This spreadsheet creates an amortization schedule for a fixed-rate loan, with optional extra payments. Free pre-built excel mortgage calculator to easily estimate your monthly mortgage payment and generate a detailed loan amortization schedule. This spreadsheet creates an amortization table and graphs for an adjustable rate mortgage (ARM) loan, with optional extra payments. This Excel spreadsheet makes it easy to view the amortization of a home loan with optional extra monthly payments. Use this calculator to generate an estimated amortization schedule for your current mortgage.