APR Calculator
The true yearly cost of a loan, fees included.
Details
e.g. application or origination extras
Annual percentage rate (APR)
6.656%
vs 6.5% note rate. The gap is the fees
This works out the effective APR on a loan once fees and points are included, so you can compare offers properly.
It shows the note rate and the APR side by side, along with the payment each implies.
What APR actually measures
APR is the annual percentage rate, and it is designed to answer one question: what does this loan really cost, including the fees?
The interest rate, sometimes called the note rate, only prices the money you borrow. APR adds the origination fees, points and certain closing costs, then expresses the whole thing as a single annual percentage. That is why APR is almost always the higher number.
A $300,000 loan at 6.5% with $6,000 of financed costs has an APR of about 6.70%. The payment is set by the 6.5% note rate; the 6.70% tells you what you are paying overall. Comparing two loans on note rate alone hides exactly the difference APR was created to expose.
The payment of $1,896.20 comes from the note rate. The APR describes the total cost of borrowing, which is what you compare between lenders.
What to enter
- Loan amount and term
- The principal and how long you repay it over. Fees spread across a longer term produce a lower APR.
- Interest rate
- The note rate. This is what actually determines your monthly payment.
- Fees and points
- Origination, underwriting and discount points. One point is 1% of the loan.
APR, note rate and APY
- Note rate
- Prices the borrowed money and sets the payment. Ignores fees entirely.
- APR
- Note rate plus fees, expressed annually. Used for borrowing, and always the higher of the two.
- APY
- Used for savings. The effective rate once compounding is included, so it is higher than the stated rate.
- Why they differ in direction
- Lenders advertise the note rate because it looks lower. Savings accounts advertise APY because it looks higher. Both are the flattering number.
What this assumes
APR assumes you hold the loan for its full term. Paying off early means the upfront fees are spread over fewer years, so the effective cost is higher than the quoted APR.
Which fees must be included is set by regulation and varies by loan type, so APRs are comparable within a category rather than across all of them.
How to calculate the APR on a loan
APR is the rate that would produce your actual payment if you had only received the net proceeds after fees.
- loan − fees
- What you actually receive after costs
- r
- The APR, solved numerically since it has no closed form
Work out the payment from the note rate. On the full loan amount. This is the payment you will actually make.
Subtract the fees from the loan. $300,000 less $6,000 of costs is $294,000 of net proceeds.
Find the rate that matches. The rate that would give the same payment on $294,000. That is the APR, and it takes iteration rather than a formula.
Compare APRs between lenders. Only useful for the same loan type and term. An APR on a 30-year loan is not comparable to one on a 15-year loan.
See a worked example: what $6,000 of fees does to the rate
- Loan
- $300,000 over 30 years
- Note rate
- 6.5%
- Fees
- $6,000
Payment at 6.5%: $1,896.20 a month.
Net proceeds after fees: $294,000.
The rate that gives a $1,896.20 payment on $294,000 is about 6.695%.
So a lender quoting 6.5% with these fees is really charging about 6.70%. A competitor at 6.6% with no fees is the cheaper loan, despite the higher headline.
6.50% note rate, 6.70% APR
Frequently asked questions
The interest rate prices the borrowed money and determines your payment. APR adds fees and points, so it reflects the total cost of borrowing.
APR is always equal to or higher than the note rate. If a lender quotes both and they are identical, the loan has no fees.
Usually, but not always, because APR assumes you hold the loan to term.
If you expect to move or refinance in a few years, a loan with a higher rate and no fees can cost less overall, even though its APR looks worse. Short holds favour low fees; long holds favour a low rate.
APR is used for borrowing and includes fees. APY is used for savings and includes compounding.
Both describe an effective annual rate, but from opposite sides. Lenders advertise the lower number and savings accounts the higher one, which is worth remembering when comparing anything.
It depends on how long you keep the loan. A point costs 1% of the loan and typically lowers the rate by about a quarter percent.
Divide the cost by the monthly saving to get a break-even in months. Staying past it means you gain; moving or refinancing before it means you lost money.
Because the debt is unsecured, so the lender has no asset to recover if you stop paying, and the rate has to cover that risk.
Card APRs also compound daily rather than monthly, so the effective annual cost is higher than the quoted APR suggests. A 22% APR compounded daily works out closer to 24.6%.
Some of them. Lender fees such as origination, underwriting and processing are negotiable, and vary meaningfully between lenders.
Government charges and recording fees are not. The Loan Estimate separates what you can shop for from what you cannot, which is exactly what it is designed to do.
US federal law does. The Truth in Lending Act, implemented through Regulation Z, requires lenders to disclose the APR and the finance charge before you commit, in a standard form.
The rules are written and enforced by the Consumer Financial Protection Bureau. That is the whole reason APR exists as a comparable number rather than each lender quoting whatever flatters it.
An APR that moves with an index. Most credit cards are variable and priced as prime rate plus a margin, so when the Fed raises rates and prime follows, your card APR rises within a billing cycle or two.
The margin is fixed by your agreement; the index is not. A card at prime + 14% will always sit 14 points above prime, whatever prime does.
A great deal, and more than most people expect. Scores run from 300 to 850 on the common FICO scale, and lenders price in bands rather than on a smooth curve, so crossing a boundary can move your rate noticeably.
The score itself is built mostly from payment history and how much of your available credit you are using, with length of history, new applications and credit mix making up the rest. Paying on time and keeping balances well below the limit are the two things that move it most.
You are entitled to your credit reports for free from the three national bureaus. Checking them and disputing errors is the cheapest rate reduction available, because a mistake on a report costs you real money every month.
Not federally for most lenders. State usury laws set the limits, and they differ enormously, which is why credit card issuers are often incorporated in states with no cap.
The Military Lending Act is the main federal exception, capping most consumer credit at a 36% military APR for active-duty service members and their dependents.
Problems people actually run into
Comparing lenders on the advertised rate
A 6.5% quote with $6,000 of fees costs more than a 6.6% quote with none. The headline rate makes the first look better.
Compare APRs, and compare the fee sections of the Loan Estimates line by line. That is what the form exists for.
Trusting APR when you will not keep the loan
APR spreads upfront fees across the full term. Repaying in five years means those fees were absorbed over five years, not thirty, so the effective cost is much higher.
If a short hold is likely, compare total cost over your actual expected period instead of relying on APR.
Results are estimates for general information only and are not professional financial, medical, or legal advice. Read our full disclaimer.
Sources
- Regulation Z, Truth in Lending · Consumer Financial Protection Bureau
- What is the prime rate, and does the Federal Reserve set it? · Federal Reserve Board
- What is a credit score? · Consumer Financial Protection Bureau
- Secured Overnight Financing Rate (SOFR) · Federal Reserve Bank of New York
Last updated: September 4, 2026