APR Calculator
Quickly calculate the True Cost of Borrowing for Personal Loans and Mortgages.
Last Updated: February 2026Banks often advertise low interest rates while hiding the real cost of the loan in fees and closing costs. This APR Calculator reveals the effective annual percentage rate by factoring in origination fees, mortgage points, and PMI so you can compare lenders accurately.
General Loan APR Calculator
Best for personal loans, auto loans, and short-term lending.
Mortgage APR Calculator
Include Points, PMI, and closing costs to see the real cost of your home loan.
Why Use This APR Calculator?
When you shop for a loan, lenders typically highlight the Interest Rate because it looks lower and more attractive. However, that rate rarely tells the whole story. Lenders often charge "origination fees," "processing fees," or require you to buy "discount points" to get that low rate.
This calculator helps you find the Annual Percentage Rate (APR), which acts as a "truth serum" for loans. It combines the interest rate with all mandatory fees to express the total cost of borrowing as a single yearly percentage.
When Should You Use This Tool?
Use this calculator in these specific real-world scenarios:
- Comparing Mortgage Offers: Lender A offers 6.5% interest with $2,000 in fees. Lender B offers 6.25% interest but charges $6,000 in "points" and fees. Use the tool to see which one actually costs less over time.
- Auto Loan Shopping: Dealerships sometimes offer low interest rates but remove cash rebates in exchange. You can input the lost rebate as a "fee" to see the true cost of that "low interest" loan.
- Personal Loans: Many online lenders charge origination fees of 1% to 5% that are deducted from the loan amount. This tool shows how those upfront deductions effectively raise your interest rate.
How APR is Calculated
While a simple interest calculator just looks at the principal balance, APR calculations are more complex. Our tool uses an iterative method (similar to Internal Rate of Return) to determine the cost.
Here is the logic in plain English:
- We take the total amount you are borrowing (Principal).
- We subtract any fees you pay upfront (like closing costs or points) to find your Net Proceeds (the actual money you walk away with).
- We calculate your monthly payment based on the full loan amount.
- Finally, we calculate what interest rate would be required to pay off the Net Proceeds using that monthly payment amount. That resulting rate is your APR.
Understanding the Results
Once you hit calculate, you might notice the APR is higher than your interest rate. Here is what that gap means:
- Small Gap (e.g., 0.1% - 0.2%): This suggests the loan has very few fees. This is common with credit unions or standard auto loans.
- Large Gap (e.g., 0.5% - 1.0%+): This indicates high upfront costs. This is common in mortgages (due to closing costs) or "bad credit" personal loans where origination fees are high.
Tool Limitations
To ensure you use this data correctly, please note the following limitations:
- Fixed Rates Only: This calculator assumes the interest rate stays the same for the entire loan. It does not predict changes for Adjustable Rate Mortgages (ARMs).
- Prepayment Assumptions: APR calculations assume you keep the loan for the full term. If you refinance or sell your house in 3 years, the effective cost of upfront fees is actually much higher than the stated APR.
Frequently Asked Questions
Why is the APR higher than the interest rate?
The APR is almost always higher because it includes the interest rate plus other costs like broker fees, points, and closing costs. It represents the total cost of credit. If a loan had zero fees, the APR and interest rate would be identical.
Does this calculator work for UK or Canadian loans?
Yes. The mathematical concept of APR is universal. However, specific terms might differ (e.g., "points" are less common outside the US). You can simply enter any upfront banking fees into the "Fees" field to get an accurate result for any currency.
What are "Discount Points" in the mortgage section?
Discount points are fees paid directly to the lender at closing in exchange for a lower interest rate. One point typically costs 1% of the loan amount. This calculator lets you input points to see if the lower interest rate is worth the upfront cash.
What is a "Loaned Fee" vs "Upfront Fee"?
An Upfront Fee is money you pay out of pocket (cash) to get the loan. A Loaned Fee (or financed fee) is added to your loan balance, meaning you pay interest on that fee over time. Both increase your APR, but financed fees also increase your monthly payment.