Interest Rate vs. APR: The Core Difference
The interest rate (also called the nominal rate) is the annual percentage charged on the loan principal. The APR (Annual Percentage Rate) includes the interest rate PLUS all required fees — primarily origination fees — expressed as a single annual percentage. The APR is always equal to or higher than the stated interest rate, and it represents the true annual cost of the loan.
Interest rate vs. APR: what each includes
| Component | Interest Rate | APR |
|---|---|---|
| Includes interest charges | Yes | Yes |
| Includes origination fees | No | Yes |
| Includes mandatory insurance | No | Yes |
| Best for comparing loans | No | Yes |
| Required by Truth in Lending Act | Yes | Yes |
| Reflects true borrowing cost | No | Yes |
A loan advertised at 9% interest with a 4% origination fee has a higher true cost than a loan at 10% interest with no origination fee. The APR calculation captures this difference. Never compare loans using stated interest rates alone.
How Origination Fees Affect APR
An origination fee is a one-time charge deducted from the loan disbursement. On a $10,000 loan with a 3% origination fee, you receive $9,700 but repay $10,000 plus interest. This fee effectively raises your APR above the stated rate. The shorter the loan term, the bigger the impact of any upfront fee on the effective APR.
How origination fees increase effective APR by term length
| Stated Rate | Origination Fee | Loan Term | Effective APR (approx) |
|---|---|---|---|
| 10% | 0% | 36 months | 10.00% |
| 10% | 1% | 36 months | 10.73% |
| 10% | 3% | 36 months | 12.18% |
| 10% | 5% | 36 months | 13.65% |
| 10% | 3% | 12 months | 15.40% |
| 10% | 3% | 60 months | 11.14% |
Are Prepayment Penalties Included in APR?
- Prepayment penalties are NOT included in APR calculations by law
- They apply only if you repay early — and only some loans have them
- Always ask lenders directly: 'Is there a prepayment penalty?'
- If yes, ask for the exact terms: flat fee, percentage, or months of interest
- Prepayment penalties are rare on modern personal loans but common on some auto and mortgage products
- A 0% prepayment penalty loan is better than an equivalent rate loan with a penalty if you plan to pay early
Compare Your Loan Offers by APR
Enter your loan details including any fees to find the true cost and the best offer to choose.