3/1 ARM - Example

A 3/1 ARM usually refers to an adjustable rate mortgage with an interest rate that is fixed for 3 years and that adjusts annually after that. The same pattern follows for many other ARMs advertised as N/1 ARMs where N represents the number of years that the interest rate is fixed and the 1 indicates that there will be 1 year between each adjustment.

In this example, we look at a 3/1 ARM for $260,000 with a starting interest rate of 6.75%. It has a 2% cap on each adjustment. It has no floor rate and a lifetime maximum interest rate of 12.75%. The index and margin are 5.2% and 1.55% respectively. When you press the Calculate button you will see that if the index rate remains stable over the life of the loan you would end up paying $347,087 in total interest.

Click on the Calculate button below to generate the amortization schedule for this example or enter your own information or explore the other examples.

The Basics: The Floor Rate Matters   Margin Makes a Difference   Payment Shock

Interest Rate Caps are Important   Comparing Future Interest Rate Scenarios

Common Loan Types: 1/1 ARM    3/1 ARM    5/1 ARM    7/1 ARM    10/1 ARM

Other Examples: 2/28    3/27    5/25

Adjustable Rate Calculator
Loan Amount$
Loan Term years
Starting Interest Rate%
Interest Rate Index & Margin
 
Current Index %
Margin %
First Rate Adjustment
Interest Rate is Fixed for months
Maximum Rate Increase%
Subsequent Rate Adjustments
Adjustments Everymonths
Maximum Rate Increase%
Life of the Loan Limits
Minimum Interest Rate%Maximum Interest Rate%
Future Interest Rate Scenarios
Best Case
(Index Rate Goes To Zero in 2nd Month)
Stable
(Index Rate Stays Same for the Life of the Loan)
Worst Case
(Index Rate Increases to the Maximum in 2nd Month)
  = Required

 

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