APR Calculator

The interest rate is the cost of borrowing the principal. APR (annual percentage rate) includes certain lender fees spread over the loan term, giving a...

Modify the values and click the Calculate button to use.
Results

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Schedule

Related: Mortgage Payoff CalculatorHouse Affordability CalculatorMortgage CalculatorAmortization Calculator

Introduction

The interest rate is the cost of borrowing the principal. APR (annual percentage rate) includes certain lender fees spread over the loan term, giving a broader cost comparison between offers.

APR vs Interest Rate

The interest rate is the cost of borrowing the principal. APR (annual percentage rate) includes certain lender fees spread over the loan term, giving a broader cost comparison between offers.

What Fees Belong in APR

Origination fees, discount points, and some closing costs are included in APR calculations under U.S. disclosure rules. Appraisal, title, and third-party fees may not be fully reflected—read your Loan Estimate carefully.

Comparing Loan Offers

Two loans at the same rate can have different APRs if fees differ. Lower APR generally means lower true cost if you keep the loan for the full term.

Limitations

If you refinance or sell early, effective cost may differ from APR assumptions. Use the Loan Calculator for amortization detail and Refinance Calculator for hold-period analysis.

How It Works

  1. Enter your amounts, rates, and term in the form. Use the same units shown in the labels (dollars, years, percent).
  2. Click Calculate to run the APR Calculator engine. Invalid or empty required fields show a clear error message.
  3. Review the summary cards for the key outputs. Expand schedules or tables when available for period-by-period detail.
  4. Copy, print, or share your scenario link. Reset the form anytime to start a fresh comparison.

Formula

Monthly payment (amortizing loan): M = P * [r(1+r)^n] / [(1+r)^n - 1], where P is principal, r is monthly rate (APR/12), and n is number of months.

FAQ

Yes. CDCalculator.io provides the APR Calculator at no charge for personal and educational use. Results are estimates and not financial advice.

The tool uses standard formulas lenders and planners use in spreadsheets. Your bank may round differently or include fees not modeled here.

Use the Copy Results and Print buttons on the calculator panel after you run a scenario. You can also share the page link with colleagues.

Focus on realistic rates, terms, and any extra payments or contributions. Small changes in APR or time horizon often move outcomes more than rounding.

No. Use this calculator to explore scenarios, then consult a qualified advisor or lender for decisions about mortgage & real estate products.