HELOC Calculator

A HELOC is revolving credit secured by your home. During the draw period you may borrow, repay, and borrow again up to the credit limit—often with...

Modify the values and click the Calculate button to use.
Results

Enter values and click Calculate.

Schedule

Related: Mortgage Payoff CalculatorHouse Affordability CalculatorMortgage CalculatorAmortization Calculator

Introduction

A HELOC is revolving credit secured by your home. During the draw period you may borrow, repay, and borrow again up to the credit limit—often with interest-only payments initially.

Home Equity Line of Credit

A HELOC is revolving credit secured by your home. During the draw period you may borrow, repay, and borrow again up to the credit limit—often with interest-only payments initially.

Draw Period vs Repayment Period

Typical structures include a 10-year draw followed by a 20-year repayment phase where principal amortizes. Payment jumps when interest-only draw ends—model both phases here.

Variable Rates

HELOCs usually track a prime rate plus margin. Rising rates increase payments. Stress-test higher APR scenarios before relying on minimum payments.

HELOC vs Home Equity Loan

Choose HELOC for ongoing projects with uncertain costs. Choose a fixed home equity loan for a one-time lump sum and rate certainty.

How It Works

  1. Enter your amounts, rates, and term in the form. Use the same units shown in the labels (dollars, years, percent).
  2. Click Calculate to run the HELOC Calculator engine. Invalid or empty required fields show a clear error message.
  3. Review the summary cards for the key outputs. Expand schedules or tables when available for period-by-period detail.
  4. Copy, print, or share your scenario link. Reset the form anytime to start a fresh comparison.

Formula

Monthly payment (amortizing loan): M = P * [r(1+r)^n] / [(1+r)^n - 1], where P is principal, r is monthly rate (APR/12), and n is number of months.

FAQ

Yes. CDCalculator.io provides the HELOC Calculator at no charge for personal and educational use. Results are estimates and not financial advice.

The tool uses standard formulas lenders and planners use in spreadsheets. Your bank may round differently or include fees not modeled here.

Use the Copy Results and Print buttons on the calculator panel after you run a scenario. You can also share the page link with colleagues.

Focus on realistic rates, terms, and any extra payments or contributions. Small changes in APR or time horizon often move outcomes more than rounding.

No. Use this calculator to explore scenarios, then consult a qualified advisor or lender for decisions about mortgage & real estate products.