Find the true Annual Percentage Rate (APR) of a loan once fees are included. The APR captures the real cost of borrowing — your note rate plus origination and closing fees, expressed as one comparable rate.
True cost of a loan with fees
The interest rate (note rate) determines your monthly payment, but it ignores fees. The APR rolls origination fees, points, and closing costs into a single annualized rate so you can compare loans fairly. Because you pay the same monthly payment but receive less cash (loan minus fees), your effective borrowing cost — the APR — is higher than the note rate. Federal Truth in Lending law requires lenders to disclose APR for exactly this reason.
For example, a $250,000 loan at a 6.5% note rate over 30 years has a payment of about $1,580. With $5,000 in fees, you effectively borrowed only $245,000 but still pay as if you borrowed $250,000 — pushing the APR to about 6.69%. When shopping lenders, compare APRs, not just rates: a lower rate with high fees can have a higher APR than a slightly higher rate with none.
The stated interest rate that sets your monthly payment. It excludes fees, so it understates the true cost.
The all-in annualized cost including fees. Always higher than the note rate when fees exist. Use it to compare offers.
A 6.25% rate with $8,000 fees may cost more than 6.5% with none. The APR reveals which loan is actually cheaper.
The interest rate prices the money; the APR prices the loan. APR folds origination fees, points and other finance charges into a single annualised rate, which is why it is almost always higher than the note rate and why US lenders are required to disclose it. Its purpose is comparison: two loans quoted at the same rate can carry very different fees, and APR is the number that exposes the difference. Its weakness is the assumption that you keep the loan for its full term — pay it off early and the fees are spread over fewer years, so the effective cost is higher than the disclosed APR suggested.
Find the rate that satisfies: Amount advanced = Σ [ Payment ÷ (1 + APR/12)^t ]Amount advanced = loan amount − financed feesApproximation: APR ≈ [ (Fees + Total interest) ÷ P ÷ years ] × 100where:
Assumptions: APR excludes third-party costs that are not finance charges, such as appraisal, title insurance and recording fees, so it is not the total cost of borrowing. Assumes the loan runs to term.
A 30-year loan of $300,000 at a 6.5% note rate carries $6,000 in origination and points.
ResultAPR ≈ 6.69% against a 6.5% note rate
The gap widens sharply on short holding periods. Sell or refinance after five years and those $6,000 of fees are spread over 60 payments rather than 360, making the true annualised cost closer to 7.0% — which is why APR flatters loans you do not keep.