APR Calculator
The advertised interest rate rarely tells the whole story. This calculator folds origination fees, points and other charges into a single annual percentage rate (APR) so you can compare loans on the true cost of borrowing, not just the headline number. Split fees into the part rolled into the loan and the part you pay out of pocket, choose how often you pay, and see a full cost breakdown.
Formula
Worked example
Borrow $20,000 at 6.5% over 60 monthly payments with $600 in upfront fees. The payment on the full $20,000 is about $391.32, but you only receive $19,400 after fees. Solving for the rate that discounts those 60 payments back to $19,400 gives roughly 7.78% APR, well above the 6.5% headline rate.
Why APR differs from the interest rate
The nominal interest rate only describes the cost of the borrowed principal. Upfront charges, origination, processing, points, or broker fees, reduce the money you actually walk away with, yet your payments are still calculated on the full amount financed. APR captures this by treating the fees as extra interest: it is the single annual rate that, when applied to your net proceeds, reproduces the same stream of payments. Because you receive less but repay the same, the APR is always at least as high as the nominal rate whenever fees are present.
Upfront fees, financed fees and points
Not every fee behaves the same way. Upfront, out-of-pocket fees are paid separately at closing, so they directly reduce the cash you receive and push the APR up the most. Financed fees are added to the loan balance and repaid over time, so they raise your payment and your total interest but not the cash you get today. Discount points are an upfront charge equal to one percent of the loan amount each, usually paid to buy down the interest rate. This calculator lets you enter all three separately so the APR reflects exactly how each charge is handled, which is how lenders disclose it.
How this calculator finds the APR
First the tool adds any financed fees to the principal to get the amount financed, then amortizes that balance at the nominal rate over the number of payments at your chosen frequency to get the level payment. It subtracts the out-of-pocket fees and points from the loan to get the net proceeds you actually receive. Finally it solves, by numerical search, for the periodic rate that makes the present value of all those payments equal to the net proceeds, and annualizes it by multiplying by the number of payments per year. This mirrors the method behind the federally required APR disclosure in the United States, though real figures can vary slightly depending on which fees a lender includes and exact day-count conventions.
Using APR to compare loans
APR is most useful as an apples-to-apples comparison between offers of the same term and payment frequency. A loan with a lower headline rate but steep origination fees or points can easily end up with a higher APR, and a higher true cost, than a no-fee loan at a slightly higher nominal rate. Be cautious comparing APRs across very different terms: spreading the same fee over a longer loan lowers the APR even though you pay interest for longer. Always pair the APR with the total interest and total fees figures to see the full picture.
Typical APR ranges by loan type
| Loan type | Typical APR range | Cost tier |
|---|---|---|
| Mortgage (prime) | 6%, 8% | Low |
| Auto loan | 5%, 12% | Low |
| Personal loan | 8%, 25% | Moderate |
| Credit card | 18%, 30% | High |
| Payday / short-term | 200%+ | High |
Representative U.S. ranges; your rate depends on credit, term, and lender. For illustration only.
Frequently asked questions
What is the difference between APR and interest rate?
The interest rate is the cost of borrowing the principal alone. APR also includes upfront fees, points and other charges expressed as a yearly rate, so it reflects the true cost of the loan. When a loan has fees, its APR is higher than its nominal interest rate.
What is the difference between upfront fees and financed fees?
Upfront fees are paid out of pocket at closing, so they reduce the cash you actually receive and raise the APR the most. Financed fees are rolled into the loan balance and paid off through your payments, so they increase your payment and total interest but not the money you walk away with today. Enter each separately for an accurate APR.
How do discount points affect APR?
Each discount point costs one percent of the loan amount and is paid upfront, usually to lower the interest rate. Because points are an out-of-pocket charge, they reduce your net proceeds and push the APR above the nominal rate, even though they often buy a lower rate in exchange.
Why is my APR higher than the rate I was quoted?
Fees are the usual reason. Origination charges, points and processing fees reduce the money you actually receive while your payments stay the same, which raises the effective rate. The bigger the fees relative to the loan, the larger the gap between the quoted rate and the APR.
Is a lower APR always better?
For loans of the same term and payment frequency, yes, a lower APR means a cheaper loan overall. Be careful comparing across different terms, though, since stretching fees over a longer loan can lower the APR even while you pay interest for more years. Check the total interest and total fees too.