APR Calculator

The true yearly cost of a loan, fees included.

Details

APR for
$
yr
mo
%
$
$

e.g. application or origination extras

Annual percentage rate (APR)

6.656%

vs 6.5% note rate. The gap is the fees

Monthly payment$1,580.17
Loan term30 yr
Total fees$4,000
Total interest$318,861
Total of payments$568,861

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.

Two numbers on the same $300,000 loan
6.50%note rate: sets the payment
6.70%APR: includes $6,000 of costs

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.

find r where: payment(loan amount, note rate) = payment(loan − fees, r)
loan − fees
What you actually receive after costs
r
The APR, solved numerically since it has no closed form
  1. Work out the payment from the note rate. On the full loan amount. This is the payment you will actually make.

  2. Subtract the fees from the loan. $300,000 less $6,000 of costs is $294,000 of net proceeds.

  3. 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.

  4. 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

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

Last updated: September 4, 2026