Debt management

HELOC Calculator

Estimate the monthly payment on a home equity line of credit, the total interest over the term and how extra payments shorten it.

  • Free
  • No sign-up
  • Updated for 2026

Your HELOC

$
%
yr
Extra payments
$

added to every payment

Enter the balance, rate and term to see the payment.

Worked example

With these example inputs:

  • HELOC balance$50,000
  • Interest rate8.5%
  • Repayment term10 yr

Monthly payment: $620

  • Loan amount$50,000
  • Total interest$24,391
  • Total of payments$74,391
  • Payoff time10 yr

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What this HELOC calculator does

This calculator estimates payments on a HELOC. You enter your home value and what you owe. You add the rate and the amount drawn. The tool then shows your likely payment. It also shows your available credit limit. You can test different draw amounts. The result helps you plan to borrow wisely.

What a HELOC is

A HELOC is a line of credit on your home. It uses your home equity as security. You can borrow, repay and borrow again. It works a little like a credit card. You only pay interest on what you use. The limit is based on your equity. It is a flexible way to borrow.

How home equity works

Home equity is your share of the home. It is the value minus what you owe. As you repay, your equity grows. Rising home prices also lift it. A HELOC lets you borrow against it. More equity means a larger possible limit. It is the foundation of a HELOC.

The draw and repayment periods

A HELOC has two main phases. The draw period lets you borrow freely. You often pay only interest then. The repayment period comes next. Then you repay both interest and principal. Your payment can jump at this point. Plan ahead for that change.

Variable interest rates

Most HELOCs carry a variable rate. The rate can rise or fall over time. It moves with a wider benchmark. So your payment is not fixed. A rate rise makes borrowing dearer. This adds uncertainty to your budget. Plan for the chance of higher rates.

HELOC versus a home equity loan

A home equity loan gives a lump sum. It usually has a fixed rate. A HELOC gives a flexible credit line. Its rate is usually variable. A loan suits a one-time need. A HELOC suits ongoing or uncertain costs. Choose the one that fits your plan.

The risks of borrowing against your home

A HELOC uses your home as collateral. Miss payments and you risk your home. A variable rate can raise your cost. It is easy to borrow more than you should. Treat it as serious debt, not spare cash. Borrow only what you can repay. Caution protects your home.

How to use it

Enter your home value and balance owed. Add the rate and the amount to draw. Read your estimated payment and limit. Then try a smaller draw and compare. See how the payment changes. Aim to borrow well within your means. Use it to plan your borrowing.

Smart uses for a HELOC

A HELOC suits value-adding goals. Home improvements are a common use. They can raise your home's value. Some use it to consolidate higher-rate debt. Others keep it as an emergency backup. Avoid it for everyday spending or luxuries. Use it where it truly pays off.

Common mistakes to avoid

A common mistake is ignoring the variable rate. Your payment can rise without warning. Another is overlooking the repayment jump. Some borrow up to the full limit. Others use it for short-term wants. A home is too much to risk lightly. A careful plan avoids these traps.

A final tip

Treat a HELOC as serious debt. Borrow only what truly adds value. Plan for the repayment period early. Budget for the chance of higher rates. Keep a clear plan to repay it. Review your balance and rate often. Used wisely, it is a powerful tool.

Frequently asked questions

How does a HELOC payment work?

A HELOC often has an interest-only draw period followed by repayment of principal and interest. This tool estimates the repayment-period payment on your balance.

Are HELOC rates fixed?

Most HELOCs carry a variable rate that can change with the market, so your real payment may move up or down. Use the current rate for an estimate.

What is the draw period?

It is the first phase when you can borrow and often pay interest only, before principal repayment begins.

How is a HELOC different from a home equity loan?

A HELOC is a revolving line you draw as needed, while a home equity loan is a lump sum at a fixed rate.

What are the risks of a HELOC?

Your home is the collateral, and a variable rate can raise the payment, so borrow with care.