APR & True Cost (USA)
Estimate annual percentage rate (APR) and true borrowing cost by accounting for fees, points, and lender credits.
Inputs
APR & True Cost
APR drivers
Fee impact
Cost composition
What contributes to the overall cost beyond the quoted note rate.
📖 What APR really means
APR means annual percentage rate. It is meant to reflect the effective borrowing cost after considering not just the note rate, but also fees and credits that change your true economics.
Two loans can have the same nominal interest rate but different APRs if one charges more upfront fees, discount points, or financed charges.
💸 How fees, points, and credits change true cost
Upfront fees
Reduce net proceeds immediately, which tends to raise APR.
Financed fees
Increase financed principal, which can raise payment and lifetime cost even if cash due today stays lower.
Lender credits
Increase net proceeds and can partially offset the APR impact of fees.
🔍 Why your APR estimate may differ from disclosures
Disclosure rules vary by fee type
Official APR disclosures can include or exclude specific charges depending on regulation and lender treatment.
Escrow is usually separate
Taxes and insurance escrow generally affect payment affordability, but not APR itself in this model.
Rounding and timing matter
Small differences in cashflow timing, payment rounding, and fee timing can change APR slightly.
Use this as a comparison tool
The best use is comparing offers consistently under the same assumptions, not replacing final lender disclosures.
❓ Frequently asked questions
Is a lower APR always the better loan?
Not always. A lower APR can still come with higher cash due at closing, so compare payment, upfront cash, and expected holding period together.
Do discount points always save money?
Only if you keep the loan long enough to recover the upfront cost through lower interest expense.
Why can financed fees still hurt true cost?
Because you borrow more principal, which increases interest paid over time even if your upfront cash need looks smaller.