APR Calculator for Adjustable Rate Mortgages

The annual percentage rate (APR) is defined as an annualized cost of credit. When it comes to mortgage financing, the APR is the actual rate of interest paid by the borrower including upfront costs such as points, closing costs, and prepaid interest. By law, a mortgage lender must disclose the APR to borrowers when quoting the interest rate. Because the APR includes other costs besides the actual amount of the mortgage, it is higher than the interest rate that is used to calculate monthly mortgage payments.

By changing any value in the following form fields, calculated values are immediately provided for displayed output values. Click the view report button to see all of your results.
Loan APR is 4.703%
*This entry is Required. indicates required.
Monthly payment:
\$1,013.37
Report amortization:
Report amortization

How to use The APR Calculator for Adjustable Rate Mortgages

1. Enter the amount you intend to borrow by typing into the white box or using the slider
2. Specify the number of years over which you will repay the loan
3. Input the initial mortgage rate of the loan
4. Enter the current index – if you are at the start of your mortgage or haven’t purchased one yet, this is likely to be the same as the starting interest rate
5. Add the margin – this is a percentage that will most likely remain the same throughout the term of your mortgage. It can be added to the index to calculate the fully indexed rate
6. Click the [ ] icon to expand the Adjustments section
7. Add the number of months that your rate will remain fixed, and the number of months between adjustments thereafter (typically this is 12 months)
8. Enter the highest percentage you expect your interest rate to change by
9. In Closing Costs, enter the percentage of your property’s value you will pay as an origination fee, and input any points or other fees that need to be included
10. Click View Report to see a breakdown of your results.

Who is this Calculator for?

This calculator is most useful if you:

• Know the interest rate and fees of a mortgage loan but haven’t yet been disclosed the APR
• Are looking at buying a property using an ARM
• Are planning a budget and want to take all of your fees into consideration.

I can afford this rate, what next?

Click Get FREE Quote on the orange button above – we will ask a few simple questions and before you know it, you will have our handpicked mortgage loan providers coming directly to you with their very best offers. Try it now!

What is a fully amortizing ARM?

Adjustable-rate mortgages (ARMs) that are fully amortizing have a maximum interest rate which they cannot exceed. They are therefore different from standard ARMs, where the rate is fully adjustable according to the index rate at the time. ARMs are described by writing how long the rate is fixed for, and how often it will adjust for the remainder of the term. For example, a 10/1 ARM would be fixed for 10 years, and adjust every 1 year from that point onward.

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