Mortgage APR Calculator

Enter your loan amount, note rate, term, and any points or fees to see the effective APR — the real cost of the loan, not just the quoted rate.

Your numbers

Results

APR vs. interest rate — what's the difference?

Your note rate is what determines your monthly payment. Your APR is a broader measure that folds in points and lender fees, spreading their cost across the loan to show what you're really paying annually. Two loans with the same note rate can have very different APRs if their fees differ — which is exactly why APR exists: it's the fairer number for comparing offers.

How this calculator works

It uses the standard simplified APR method: your monthly payment is calculated from your note rate as normal, then the calculator finds the rate that would produce that same payment on a slightly smaller loan — your amount minus the fees. That gap between the note rate and the result is the cost of the fees, expressed as a rate rather than a dollar figure.

Using APR to compare offers

A lower rate with high points can have a higher APR than a slightly higher rate with no points — always compare APR, not just the headline rate.
APR assumes you keep the loan for its full term. If you plan to sell or refinance within a few years, a low-fee option often wins even if its APR looks less impressive.
Ask every lender for the same fee breakdown so you're comparing true apples to apples.