HELOC Rate Calculator — Your Estimated APR by Credit Score

Model your HELOC rate using today's prime rate plus your lender margin. See how credit score and LTV affect what you'll pay — before you apply.

Calculate Your Estimated HELOC Rate

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Estimated APR
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$50K Draw
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$100K Draw
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$150K Draw
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Rate Tier Table — Typical HELOC Spreads (May 2026)

Credit ScoreTypical MarginEst. APRMonthly on $100K
Prime Rate History — Last 12 Months

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How HELOC Rates Are Set

HELOC rates are variable — they move with the prime rate, which the Federal Reserve influences through its federal funds rate decisions. Most lenders price HELOCs at prime plus a margin, typically prime + 0% to +2% depending on your creditworthiness. When the Fed raises rates, your HELOC rate rises automatically — often within one billing cycle.

Prime Rate and Your HELOC

As of May 2026, the prime rate is 7.50%. A borrower with excellent credit might get a HELOC at prime + 0.5% = 8.00%. A borrower with a 680 credit score might see prime + 1.25% = 8.75%. The spread over prime is set at origination and generally doesn't change — but the prime rate itself moves with the Fed. Use our HELOC payment calculator to see how rising rates affect your monthly budget.

Rate Caps and Protections

Federal law (TILA) requires that HELOC agreements include a lifetime interest rate cap — most range from 18% to 21%. Many agreements also include a periodic cap, limiting how much the rate can rise in any single adjustment period. Confirm both caps with your lender before signing. For a complete cost analysis at different rate levels, see our HELOC interest calculator.

How to get a lower HELOC rate

Improve your credit score first. A 40-point improvement from 680 to 720 can save 0.5–1.0% on your margin — on a $100K HELOC, that's $500–$1,000 per year. Pay down credit card balances to below 30% utilization in the 3–6 months before applying.

Reduce your LTV. Lenders offer better margins to borrowers with lower LTV ratios. If you're at 82% CLTV, making extra mortgage payments to drop below 80% can unlock a lower tier.

Shop at least 3 lenders. Rates vary by 0.5–1.5% between institutions. Credit unions consistently offer lower margins than major banks — often prime + 0 to +0.5% for excellent-credit borrowers.

Ask about relationship discounts. Many banks offer 0.25–0.5% rate reductions if you set up autopay from a checking account at the same institution.

Frequently Asked Questions

What is the current average HELOC rate?

As of May 2026, the prime rate is 7.50%. The national average HELOC rate ranges from approximately 8.00%–10.50% APR depending on credit score and LTV. Borrowers with excellent credit (720+) and low LTV ratios often qualify for rates near 8.00–8.50%. Credit unions frequently offer rates 0.5%–1% below major banks. Shopping at least three lenders typically identifies the best rate for your profile. Use our HELOC calculator to model payments at the rate you're quoted.

How often does a HELOC rate change?

Most HELOCs have a monthly rate adjustment tied directly to the prime rate. When the Federal Reserve changes the federal funds rate, the prime rate moves within days, and your HELOC rate adjusts on your next billing cycle. Some HELOCs offer a fixed-rate option for a portion of the balance during the repayment period, allowing you to lock in a rate on what you've drawn — a useful hedge if you're concerned about continued rate increases.

Can I get a fixed-rate HELOC?

True fixed-rate HELOCs are rare — most are variable. However, many lenders offer a fixed-rate conversion option, allowing you to lock in a fixed rate on all or part of your outstanding balance during the repayment period. If payment predictability is important, a home equity loan — which carries a fixed rate from the start — may be a better fit. See our HELOC vs home equity loan comparison to evaluate the tradeoff.

How does my credit score affect my HELOC rate?

Your credit score is one of the most significant factors in your HELOC rate. A 760+ borrower might qualify for prime + 0%, while a 680 score borrower may see prime + 1.25% — a 1.25-point difference that adds up significantly over time. On a $70,000 HELOC balance, that difference costs roughly $875 per year in additional interest. Improving your score by 40–60 points before applying is often worth the 3–6 month wait. Check your equity position with our home equity calculator to see if you're in range to apply.

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