This 5/1 ARM mortgage calculator creates an amortization schedule for adjustable rate mortgages. Analyze risk with best and worst case interest rate scenarios.
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A 5-year ARM (also referred to as a 5/1 ARM) is a certain kind of ARM. An ARM, which stands for adjustable-rate mortgage, is a type of mortgage where the interest rate fluctuates with a given index (such as the LIBOR or CD indices).
Download a free ARM calculator for Excel that estimates the monthly payments and amortization schedule for an adjustable rate mortgage.This spreadsheet is one of the only ARM calculators that allows you to also include additional payments. The monthly interest rate is calculated via a formula, but the rate can also be input manually if needed (i.e. overwriting the cell formula).