What is a HELOC loan and how does it work?

If you've been making regular mortgage payments for some time, you may have equity in your home. That equity could work for you. 

Whether you're looking to renovate your home, cover a major expense, or consolidate debt, a HELOC is one way to use the equity in your home to come up with the money. Here's how a HELOC works.

What is a HELOC loan?

A home equity line of credit (HELOC) is a revolving credit line backed by your home equity. Home equity is the difference between what you owe on your mortgage and how much the home is worth.

You may hear a HELOC referred to as a loan, but it's actually a line of credit, not a one-time loan. You can borrow against it, pay back what you owe, and borrow again as often as you like, up to your credit limit. Your home secures the HELOC, which makes it a mortgage. If you don’t repay your HELOC, you could lose your home. If you have a mortgage and a HELOC, the HELOC would be your second mortgage. That means when the home is sold, your primary mortgage lender gets repaid first, and then your HELOC lender, before you get any money from the sale. 

How does a HELOC work?

It helps to understand how a HELOC works so you can decide if it fits your situation.

Step 1: Apply and get a credit limit

If you qualify, lenders generally set your credit limit based on your home's current value, your existing mortgage balance, your credit profile, and your debt-to-income ratio (DTI)—the proportion of your monthly income that goes toward debt and housing payments.

Step 2: Understand how you access funds

HELOCs include a draw period during which you may borrow repeatedly up to your credit limit. Draw rules vary by lender. Some lenders require a minimum initial draw or a minimum ongoing draw amount.

Step 3: Know how interest works

You pay interest on the amount you draw. Most HELOCs carry variable interest rates, meaning your rate could change over time, as market rates change. Some lenders offer fixed-rate HELOCs, so ask your lender upfront whether fixed-rate options are available and what they cost.

Step 4: Make payments during the draw period

Some lenders allow interest-only payments during the draw period. Others require principal plus interest. Confirm which applies to any HELOC you're considering.

Step 5: Transition to repayment

When the draw period ends, you enter the repayment period. You’ll repay the balance, including principal and interest, in equal monthly payments. Your payment amount may be higher than it was during the draw period, especially if you were making interest-only payments. 

Questions to ask a lender before you commit:

• Is the interest rate variable or fixed? What causes the rate to change, and how often could it change?

• What fees apply—origination, appraisal, annual, closing, early closure?

• Is there a minimum initial draw or minimum ongoing draw requirement?

• How long are the draw period and repayment period?

• If fixed-rate options exist, what are the rules, limits, and costs?

How much can you borrow with a HELOC loan?

Lenders usually consider your home's current value, your existing mortgage balance, your credit profile, and your DTI. The specific formula varies by lender, and there are no guaranteed approval amounts.

Use our HELOC calculator to estimate how much you may be able to borrow based on your home value and mortgage balance.

HELOC loan costs 

A HELOC comes with several costs and fees to plan for, including interest charges, payment changes over time, and lender fees.

When you borrow with a HELOC, you generally pay interest only on the amount you've drawn.

Payments may change over time for two reasons. 

1. If your HELOC has a variable rate, your interest charges will change when rates move. 

2. When you transition from the draw period into repayment, your payment structure may change from interest-only to principal plus interest, depending on what your lender allowed during the draw period.

Fees are the other cost to plan for. Common categories include origination, appraisal, annual, and early closure fees. Not every lender charges all of these, and amounts vary. Before you sign anything, ask your lender for a complete, itemized fee list.

Pros and cons of a HELOC 

Pros:

• Borrow only what you need, provided it meets your lender's minimum draw requirement.

• During the draw period, some lenders allow you to make interest-only payments on the balance you owe. 

• A HELOC may carry a lower rate than unsecured debt options for qualified borrowers

• Draw on a flexible schedule, if your lender allows.

Cons:

• Variable rates mean your payments could rise if rates increase.

• Making interest-only payments during the draw means your payments will spike when you enter repayment.

• Fees vary by lender.

• Your home is collateral, so missed payments could put it at risk.

HELOC loan vs. home equity loan

The key difference between a HELOC and a home equity loan is structure. A HELOC is a revolving credit line: you borrow in phases, subject to lender rules.

With a home equity loan, the lender delivers a one-time loan, with a fixed payment schedule.

How to decide if a HELOC loan fits your situation

Before applying, consider the following:

• Why do you need the funds, and is a revolving credit line the right structure?

• How quickly do you expect to repay, and could your budget handle higher payments if rates rise?

• Are you comfortable using your home as collateral?

Compare lender terms on fees, draw rules, and repayment timelines before committing.