Interest-Only Mortgage Amortization Calculator

Use this calculator to explore how the interest rate, minimum payment, and principal balance on your interest-only mortgage change over time.

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» Interest-Only Mortgage Advice

You can compare the impact of best case, worst case and stable interest rate scenarios. You may also wish to review our examples or compare the amortization schedule generated by our calculators for fixed rate mortgages or adjustable rate mortgages.

Fixed-Rate Interest-Only Mortgages:
30 Year Fixed Interest-Only Mortgage 20 Year Fixed Interest-Only Mortgage

Interest-Only ARMs With Interest-Only Periods Matching Fixed-Rate Period:
Interest-Only 3/1 ARM Interest-Only 5/1 ARM Interest Only 7/1 ARM
Interest-Only 10/1 ARM

Interest-Only ARMs With Interest Only Periods Longer Than Fixed-Rate Period:
3/1 ARM (10 Year Interest-Only Period) 5/1 ARM (10 Year Interest-Only Period)
7/1 ARM (10 Year Interest-Only Period)

Interest-Only Calculator
Loan Amount	$
Loan Term	years
Starting Interest Rate	%
Loan is Interest-Only for	years

Interest Rate Index & Margin

Current Index	%
Margin	%

First Rate Adjustment
Interest Rate is Fixed for	months
Maximum Rate Increase	%

Subsequent Rate Adjustments
Adjustments Every	months
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