Transparent method
The formula
Worked example
Example inputs
How to interpret the result
APR pulls upfront finance charges into a single annualized rate specifically so two loans with different fee structures can actually be compared on equal footing. A lower interest rate loaded with points and fees can carry a higher true APR than a plain loan with a slightly higher stated rate and no fees at all.
Before you rely on it
What to check
Compare APR, not the stated interest rate, when shopping loans, and confirm which specific fees each lender's APR figure actually includes.
The common error
Where people go wrong with APR calculator
Comparing stated interest rates across lenders while ignoring APR. Two loans with identical rates can carry very different real costs once each lender's fee structure gets folded into an APR comparison.
Sensitivity evidence
How interest rate changes the estimated APR
| Interest rate | Estimated APR | Monthly payment |
|---|---|---|
| 5.0% | 6.6% | $461 |
| 6.0% | 7.6% | $470 |
| 7.0%worked example | 8.6% | $479 |
| 8.0% | 9.6% | $488 |
| 9.0% | 10.6% | $498 |
Every input, tested
Which input moves the estimated APR most
| Input | Tested from | To | Estimated APR at each end | Swing |
|---|---|---|---|---|
| Interest rate | 6.0% | 8.0% | 7.6% to 9.6% | 2.0% (24%) |
| Term | 3.0 years | 5.0 years | 9.1% to 8.3% | 0.783% (9.1%) |
| Loan amount | $18,000 | $22,000 | 8.8% to 8.4% | 0.327% (3.8%) |
| Upfront finance fees | $540 | $660 | 8.4% to 8.7% | 0.323% (3.8%) |
Two variables at once
Estimated APR by interest rate and loan amount
| Interest rate \ Loan amount | $16,000 | $20,000 | $24,000 |
|---|---|---|---|
| 5.0% | 7.0% | 6.6% | 6.3% |
| 6.0% | 8.0% | 7.6% | 7.3% |
| 7.0% | 9.0% | 8.6% | 8.3% |
| 8.0% | 10.0% | 9.6% | 9.3% |
| 9.0% | 11.0% | 10.6% | 10.3% |
Step by step
The worked example, input by input
| Input | Value used |
|---|---|
| Loan amount | $20,000 |
| Interest rate | 7.0% |
| Term | 4.0 years |
| Upfront finance fees | $600 |
| Estimated APR | 8.6% |
| Monthly payment | $479 |
Where the inputs come from
Take the loan amount and note rate from the offer, and the term in years. The upfront fees are the charges deducted from or added to the loan at closing: origination fee, application or processing fee and points. Do not include costs that are not finance charges, such as a title fee on a mortgage, because federal disclosure rules treat those differently. The result is an estimate; the lender's figure follows the exact Truth in Lending method.
When the result stops applying
APR is defined for fixed-payment loans. For adjustable-rate loans the disclosed figure rests on an assumed rate that may not hold. Credit cards quote APR without upfront fees, and payday and title loans often show APRs above 300% because the term is a few weeks; comparing those with a multi-year loan's APR is not like for like.
What to compare it with
APR is the right yardstick when comparing two loans with different fees, and a poor one when comparing two loans of very different lengths. Alongside it, look at the finance charge in dollars, which is the amount you pay above the sum borrowed. If a lender quotes only a rate and a payment, use the loan interest rate calculator to solve for the rate and see whether it matches. When two APRs are within a few hundredths of a point, other factors decide: service, flexibility, and how easily you can prepay.
People also ask
Frequently asked questions
Why is APR higher than the interest rate?
Because APR includes finance charges paid up front. Those fees reduce the money you actually receive while payments stay based on the full amount, which raises the effective annual cost.
Is a lower APR always the better loan?
Usually, if the terms match. It can mislead when comparing different lengths, since fees spread over more years look smaller per year.
Which fees count toward APR?
Finance charges such as origination fees, points, mandatory credit insurance premiums and some processing fees. Late fees and optional add-ons generally do not.