APR Calculator

APR (annual percentage rate) is the all-in yearly cost of your loan with the lender fees folded in, while the interest rate — the “note rate” — is only the cost of borrowing the money before fees.

The note rate is what your monthly payment is actually calculated from. The APR takes that same payment, then asks a different question: once we account for the points and fees you paid to get this loan, what rate is this deal really equivalent to? Because fees make the loan more expensive than the rate alone suggests, the APR is almost always a little higher than the note rate.

Both are required on every Loan Estimate by the Truth in Lending Act (Regulation Z) so you can compare lenders on the same footing.

Your APR is higher because it spreads the up-front fees you paid — points, origination, and certain lender charges — across the life of the loan and expresses them as extra rate.

Here is the logic this calculator uses: the lender keeps your fees at closing, so you don’t actually get the full loan amount in hand — you get the amount financed, which is the loan minus those prepaid fees. But you still make payments on the full loan. Paying the same payment on a smaller net amount is mathematically a higher rate, and that higher number is the APR.

A bigger spread between rate and APR is a signal to look closely at the fee column — it means this loan carries meaningful up-front cost.

APR includes the finance charges you pay to get the loan — discount points, origination, and lender fees like underwriting and processing — but it excludes third-party costs such as appraisal, title, recording, taxes, and insurance.

This is the single most misunderstood part of APR, so here is the clean line this calculator draws:

The rule of thumb: if a fee is paid to the lender for the privilege of getting this loan, it’s a finance charge and rolls into APR. If it’s a service you’d pay for on any purchase (the appraiser, the title company, the county recorder), it stays out. That’s why this tool’s “Other APR fees” box is labeled for underwriting and prepaid interest — not title, appraisal, or escrows.

Yes — mortgage insurance is a finance charge, so the properly calculated APR on a loan with PMI or FHA MIP is higher than the rate-plus-lender-fees alone would suggest.

Mortgage insurance protects the lender, not you, and it’s required to get the loan when your down payment is small — which makes it a cost of credit under Reg Z. A complete APR therefore includes the monthly mortgage insurance premium for as long as it’s scheduled to run, plus any up-front MIP or funding fee.

This calculator focuses on the points-and-fees portion of APR; if your loan carries mortgage insurance, your official Loan Estimate APR will fold it in and may land slightly higher than the figure here.

APR is the single yearly rate that makes the present value of all your scheduled payments equal the amount you actually financed — the Regulation Z “actuarial” method, solved by trial and error.

You don’t need the math to trust it, but here’s what’s happening under the hood, step by step:

• 1. Build the payment stream. Take the monthly principal & interest payment computed from your note rate and term — the real payments you’ll make.
• 2. Find the amount financed. Subtract the prepaid finance charges (points + origination + lender fees) from the loan. That’s the net cash the financing actually provides.
• 3. Solve for the rate. Search for the one interest rate that discounts that whole stream of payments back to exactly the amount financed. That solved rate, annualized, is your APR.

This calculator solves step 3 by bisection — it repeatedly narrows a high/low guess until the present value matches, the same answer the textbook Newton’s method gives but with no edge-case blow-ups. It’s the federally mandated approach, which is why every lender’s APR on the same loan terms should match.

APR can be gamed because lenders have real discretion over which borderline fees they include and what assumptions they make — so a lower APR on a quote doesn’t always mean a cheaper loan.

The math is standardized, but the inputs are not. A lender who wants a shiny APR can nudge it down in ways that are technically allowed:

• Leaving fees out. Some charges sit in a gray zone — one lender counts them, another quietly doesn’t, lowering the APR.
• Optimistic MI assumptions. Assuming mortgage insurance drops off early shrinks the APR.
• Quoting before fees are final. An APR on a verbal quote can move once the real fee sheet lands.
• A “teaser” low rate with hidden points can still show a tidy APR if the disclosure is loose.

Not automatically — the lowest APR is the cheapest loan only if you keep it to full term, and most people don’t.

APR spreads up-front fees across the entire term (say, all 30 years). If you sell or refinance in year five, you never get to amortize those fees over 30 years — you paid them up front and left early, so a loan with low fees and a slightly higher rate can actually beat the “lower APR” loan that charged you points to get there.

Ask the better question: how long until the up-front fee pays for itself? If you won’t own the loan that long, don’t buy the lower APR. To compare two real offers head-to-head, our loan comparison calculator shows the break-even point.

APOR (the Average Prime Offer Rate) is a weekly benchmark APR for the best-qualified borrowers, and regulators compare your loan’s APR to it to decide whether the loan is “higher-priced” and needs extra protections.

Think of APOR as the par line for a clean, prime loan. The further your APR sits above the APOR for your loan type, the more consumer-protection rules kick in:

• Higher-Priced Mortgage Loan (HPML). When a first-lien APR runs roughly 1.5 percentage points or more above APOR, the loan is an HPML and triggers requirements like a mandatory escrow account and a stricter appraisal.
• High-Cost (HOEPA) loan. A larger gap — or high total points and fees — can make a loan “high-cost,” adding heavy restrictions and disclosures.

For an ordinary, well-qualified borrower these thresholds never come into play — your APR sits comfortably below them. APOR mainly matters as a guardrail that flags loans priced well above market, so it’s a useful gut check: if your APR is far above the going rate for someone with your profile, that’s worth a conversation.

Points lower your note rate but they’re a fee, so they raise your APR — the two numbers move in opposite directions on purpose, and that’s exactly what APR is designed to catch.

A discount point is money paid up front to buy a lower rate. The lower rate shrinks your monthly payment, but the point itself is a prepaid finance charge that goes straight into the APR calculation. So a loan with a tempting low rate bought down with points can carry an APR that’s noticeably higher than a no-point loan.

Whether the points are worth it comes back to time: if you keep the loan long enough for the monthly savings to exceed what the points cost, they pay off. If not, the higher-APR, point-heavy loan was the worse deal.

No — it gives a faithful estimate using the same Reg Z method, but your official, legally binding APR is the one disclosed on your Loan Estimate within 3 business days of applying.

This tool is built for honest comparison shopping: type in a quote’s rate, points, and fees and see what the loan truly costs. It deliberately counts only the prepaid finance charges you enter — points, origination, and the lender fees in the “Other APR fees” box — and excludes taxes, insurance, title, and escrows, just as the rules require.

• Use it to sanity-check a verbal quote before you commit.
• Use it to compare two offers when you know each one’s fees.
• Then confirm against the official APR on the Loan Estimate — if the numbers diverge a lot, ask the lender to explain.

Estimates here are for comparison only and aren’t financial advice; a licensed loan originator can walk you through the real numbers on your specific loan.

Enter your loan amount, note rate, and term, then add the points and fees from your quote — the APR, payment, and fee breakdown update instantly.

• Fill in loan amount, interest rate (the note rate quoted), and term.
• Enter points and origination — toggle each between % of the loan or a flat $ amount; the tool shows the dollar equivalent.
• Put underwriting, processing, and prepaid interest in “Other APR fees.” Leave out title, appraisal, recording, and escrows — those don’t count toward APR.

The green result card shows your APR, how much it sits above the note rate (“+x% in fees”), your amount financed, and your total finance charge over the term. Run two quotes through it and you’ll see which loan is genuinely cheaper — then verify against each lender’s official Loan Estimate.