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CalcWolf Finance HELOC Payment Calculator
Finance

Calculate HELOC Payments

Estimate HELOC monthly payments during draw and repayment periods. See total interest cost.

📅 Updated April 2026 Formula verified 📖 4 min read 🆓 Free · No sign-up

How HELOCs Work

A HELOC has two phases: the draw period (typically 5-10 years) where you can borrow and repay like a credit card, paying interest only on what you have used. Then the repayment period (10-20 years) where you repay the principal plus interest in fixed monthly payments. The transition from draw to repayment often causes payment shock — monthly payments can double or triple.

HELOC vs Home Equity Loan

HELOC: Variable rate, revolving credit, interest-only during draw period. Best for ongoing expenses or as an emergency fund backup. Home Equity Loan: Fixed rate, lump sum, fully amortizing payments from day one. Best for one-time large expenses (renovation, debt consolidation) where you want payment certainty. Fixed rates are typically 0.5-1% higher than HELOC initial rates.

⚡ CalcWolf Insight

The biggest HELOC risk: variable rates during a rising rate environment. A $80,000 HELOC at 6% costs $400/month interest-only. If rates rise to 10%, the payment jumps to $667/month — a 67% increase with no additional borrowing. If you take a HELOC, budget for rate increases of 2-4% above your starting rate.

Frequently asked questions
What is a good HELOC rate?
HELOC rates are variable, typically Prime Rate + 0-2%. In 2026 with Prime at 8.5%, expect HELOC rates of 8-10.5%. Rates vary by credit score, LTV, and lender. Credit unions typically offer 0.25-0.75% lower rates than banks.
Is HELOC interest tax deductible?
HELOC interest is deductible only if the funds are used to buy, build, or substantially improve the home that secures the loan. Using HELOC funds for debt consolidation, vacations, or other purposes makes the interest non-deductible. This changed with the 2017 Tax Cuts and Jobs Act.
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Kevin Glover
Founder, CalcWolf · GLVTS · Blickr
All formulas sourced from primary references — IRS publications, peer-reviewed research, and official standards. Results are tested against independent reference calculators before publishing. Rates and brackets updated when official sources change. Editorial policy →
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