How to use this calculator
- Enter the Loan amount and the Interest rate.
- Enter the Loan term in months.
- Add Fees paid upfront that are deducted from the money you receive.
- Read the APR, Monthly payment, Total cost of borrowing and Amount you actually receive.
What APR measures
APR (annual percentage rate) expresses the yearly cost of borrowing as one rate. When there are no fees it equals the stated interest rate. When fees are taken out of the loan, you receive less than you owe, so the effective rate you pay on the money you actually got is higher.
Amount − Fees = Σ Payment ÷ (1 + i)^t for t = 1…n; APR = i × 12- Amount − Fees = money you actually receive
- Payment = the fixed monthly payment on the full loan amount at the stated rate
- i = monthly rate that makes both sides equal (found by iteration)
- n = number of monthly payments
The calculator finds the monthly rate at which the payments, discounted over the term, equal the amount received after fees, then multiplies it by 12.
Example: $20,000 at 8% for 48 months with $600 in fees
The payment is $488.26 and total interest is $3,436. Because $600 of fees is deducted, you receive $19,400, and the total cost of borrowing is $4,036. The APR comes out at 9.59%, well above the 8% rate.
With no fees, the APR equals 8%. With $1,500 in fees it rises to 12.12% even though the payment does not change, which is why the same headline rate can be a very different deal.
How to use APR to compare
Compare loans of the same type and term by APR rather than rate. A lower rate with high fees can cost more than a slightly higher rate with none.
APR has limits: short loans magnify the effect of fees, and a loan repaid early costs more per year than its APR suggests, since the fees are spread over fewer months. To compare structure side by side, use the loan comparison calculator; to see the monthly payment alone, use the loan calculator.
Common situations where APR matters
Personal loans, auto loans and mortgages often charge origination fees, points or processing fees that sit outside the interest rate. Two quotes with the same rate and different fees have different APRs, and the gap grows as the term shortens, because the fee is spread over fewer payments.
Also compare the payment and the total cost. A longer term lowers the APR impact of fees but raises total interest, so look at all three figures before choosing. For mortgages, the mortgage points calculator helps you decide whether paying to lower the rate is worthwhile.
Ways to lower your APR
- Ask which fees are negotiable or can be waived.
- Compare at least three lenders with the same loan amount and term.
- Improve your credit score before applying, which usually earns a lower rate.
- Avoid rolling fees into the loan if you can pay them separately and the numbers still work.
Assumptions and limits
The tool assumes a fixed rate, equal monthly payments, and that all fees are paid upfront or deducted from proceeds. It does not model variable rates, balloon payments, insurance products or compounding conventions that differ by country.
Lenders must follow their own legal definition of APR, so the official disclosed figure on your loan documents is the one to rely on.
Frequently asked questions
What is the difference between APR and interest rate?
The interest rate is the cost of the money borrowed. APR includes certain fees too, so it is usually higher and gives a fuller picture of the cost.
Is a lower APR always better?
For loans with the same term and type, mostly yes. Check the total cost and monthly payment too, since the term changes both.
Which fees are included?
In this calculator, whatever you enter as upfront fees. Legal definitions differ by country and product, so check your lender's disclosure.
Does APR include compounding?
This tool uses the nominal APR (monthly rate × 12). To see the effective yearly yield of compounding, use the APY calculator.