Personal Loan Calculator · Practical guide
APR vs. Interest Rate on a Personal Loan
The rate tells you the price of borrowing; the APR tells you the price of borrowing including fees. They are rarely the same number.
At a glance
The Difference in One Sentence
The interest rate is the cost of borrowing the principal, full stop. The APR (annual percentage rate) folds in origination fees and other charges, measured against the money you actually receive — making it the honest number for comparing loan offers.
Interactive tool
Personal Loan Calculator
Enter your own values, then compare the result with the examples below.
Loan Summary
Amortization Schedule
| Month | Payment | Principal | Interest | Balance |
|---|
A Worked Example
Two lenders offer you $10,000 over 3 years:
| Lender A | Lender B | |
|---|---|---|
| Interest rate | 8% | 10.5% |
| Origination fee | 5% ($500) | None |
| You receive | $9,500 | $10,000 |
| Monthly payment | $313.36 | $325.02 |
| Estimated APR | 11.520% | 10.500% |
Lender A advertises the lower rate, but the fee pushes its APR to 11.52% — more than Lender B's 10.5%. If you need the full $10,000 in hand, Lender B is the cheaper loan despite the higher headline rate.
When APR Equals the Interest Rate
With no fees, the two numbers match: a $10,000 loan at 8% for 3 years with zero origination fee has an APR of exactly 8.000%. Every dollar of fees widens the gap — a 2% fee lifts that loan's APR to 9.378%, and an 8% fee lifts it to 13.760%.
How to Use This When Shopping
Federal law requires lenders to disclose APR, so always line up offers by APR rather than rate. The calculator above estimates APR for any combination of rate and origination fee, so you can verify what a lender's disclosure should look like before you apply.
Frequently Asked Questions
Can an APR be lower than the interest rate?
No. APR includes the interest rate plus fees, so it is always equal to or higher than the stated rate. Equal only when there are no fees.
Why is APR better for comparing loan offers?
Because it captures the total cost of credit — interest plus fees — as a single yearly rate, so two structurally different loans can be compared directly.
Does APR change my monthly payment?
No. The payment is set by the loan amount, rate, and term. APR is a disclosure figure that reflects fees you paid up front, not a different payment schedule.
What fees are included in a personal loan APR?
Primarily the origination fee. Charges like late fees or prepayment penalties are conditional and are not part of the disclosed APR.