HELOC Calculator
Leverage your home's equity to build your financial future.
HELOC Calculator
A HELOC works like a credit card backed by your home's equity — flexible, revolving, and often with much lower interest rates than unsecured debt. This calculator shows what your payments will look like during both the draw and repayment periods.
What Is a HELOC?
A Home Equity Line of Credit (HELOC) lets you borrow against your home equity up to a set limit, repay it, and borrow again — similar to a credit card. Most HELOCs have a 10-year draw period (interest-only payments) followed by a 20-year repayment period (principal + interest).
How to Use This Calculator
- Enter your home's current value and mortgage balance.
- Enter the lender's maximum LTV (typically 80%–85%).
- Enter the HELOC interest rate (usually variable, tied to Prime Rate).
- Enter the amount you plan to draw.
- Click Calculate to see draw period payments and repayment period payments.
HELOC Payment Phases
Draw Period (usually 10 years): You can borrow and repay freely. Minimum payments are typically interest-only on the outstanding balance.
Repayment Period (usually 20 years): The line closes and remaining balance converts to an amortizing loan with principal + interest payments.
Example Calculation
HELOC limit: $80,000 | Rate: 9% | Amount drawn: $50,000
- Draw period monthly payment (interest only): $50,000 × 9% ÷ 12 = $375/month
- Repayment period (20 years): principal + interest = ~$450/month
Caution: If rates rise to 11%, draw period payment jumps to $458/month.
HELOC vs. Home Equity Loan
- HELOC: Variable rate, flexible draws, interest-only during draw period. Best for ongoing expenses or renovation projects with uncertain costs.
- Home Equity Loan: Fixed rate, lump sum, predictable payments. Best for one-time large expenses with a known amount. See our Home Equity Loan Calculator.
Common Mistakes to Avoid
- Making only interest payments and never reducing principal — During the draw period, voluntary principal payments save significant interest.
- Ignoring rate variability — HELOCs are usually variable rate. A rising rate environment can significantly increase payments.
- Over-drawing and getting caught at repayment — The jump from interest-only to amortizing payments can shock unprepared borrowers.
- Using HELOC as an emergency fund replacement — If your home value drops, lenders can reduce or freeze your credit line.
Frequently Asked Questions
What is the current HELOC rate?
HELOC rates are typically tied to the Prime Rate plus a margin. As of 2025, HELOCs often range from 8%–10%+ depending on creditworthiness and lender.
Can I convert my HELOC to a fixed rate?
Some lenders offer fixed-rate lock options that let you convert part or all of your HELOC balance to a fixed-rate loan, providing payment certainty.
What happens if I don't use my HELOC?
You pay nothing if you don't draw on it. Some lenders charge an annual fee ($50–$100) for maintaining the line, even if unused.
Can the bank reduce my HELOC limit?
Yes. If your home value drops significantly or your financial situation deteriorates, lenders can reduce or suspend your credit line — even without warning.
Is HELOC interest tax deductible?
Only if used to buy, build, or substantially improve your home. Using HELOC funds for other purposes (debt payoff, vacations) eliminates the deduction. Consult a tax professional.
Conclusion
A HELOC can be a powerful financial tool when used for the right purposes — home improvements, planned large expenses, or as a financial backstop. Know your payments for both phases before you open one.
Related: Home Equity Loan Calculator | Mortgage Calculator | Interest Rate Calculator | Debt Consolidation Calculator
Borrowing Tip
HELOC rates are almost always variable, tied to the Prime Rate. If market rates rise, your monthly interest-only payments will increase even if your balance stays the same.
