A HELOC is a line of credit you can draw from whenever you need it, using your home as collateral

A HELOC (home equity line of credit) works like a credit card backed by your house. You borrow against the equity you have built up — the difference between what your home is worth and what you still owe on your mortgage. The lender sets a maximum amount you can borrow, called your credit limit. You do not have to borrow all of it at once. Instead, you draw money when you need it, pay interest only on what you have actually borrowed, and can borrow again as you pay it back.

The lender uses your home as security for the loan. If you stop making payments, the lender can foreclose and sell your house to recover what you owe. This is why HELOCs typically offer lower interest rates than credit cards or personal loans — the lender's risk is lower because they have a claim on a physical asset.

Most HELOCs have two phases: a draw period (usually 5 to 10 years) when you can borrow and repay as needed, and a repayment period (usually 10 to 20 years) when you can no longer borrow and must pay back what you owe in monthly installments.

Key Takeaways

  • A HELOC lets you borrow money in chunks as you need it, using your home equity as collateral, and you pay interest only on the amount you have actually borrowed.
  • Your credit limit depends on your home's value, how much you still owe on your mortgage, your credit score, and your income.
  • During the draw period you can borrow and repay repeatedly; during the repayment period you can only pay back what you owe.
  • Interest rates on HELOCs are usually variable, meaning your monthly payment can go up or down as market rates change.
  • If you cannot pay back a HELOC, the lender can foreclose on your home, so borrowing more than you can afford puts your house at risk.

How the draw period works

During the draw period, the lender gives you access to a pool of money. You can withdraw some, all, or none of it. You might write a check, use a debit card linked to the account, or request a transfer to your bank account — the exact method depends on your lender. You pay interest only on the balance you have withdrawn, not on the unused portion of your credit limit.

As you pay back what you have borrowed, that money becomes available to borrow again. If you borrow $10,000 and pay back $3,000, you can borrow another $3,000 without exceeding your limit. This flexibility is the main reason people use HELOCs instead of taking out a fixed loan: you can borrow in pieces as expenses come up, rather than taking a lump sum and paying interest on money you have not yet spent.

During the draw period, your monthly payment is typically interest-only. If you have borrowed $25,000 at 7 percent interest, your monthly payment might be around $145. You are not building equity in the borrowed amount — you are just paying the cost of using the money. Some lenders let you pay down the principal during this phase, which reduces your interest charges, but you are not required to.

What happens when the draw period ends

When the draw period ends, you can no longer borrow. The repayment period begins, and your monthly payment changes. Now you must pay back both the principal (the money you borrowed) and the interest, usually over 10 to 20 years. If you still owe $25,000 when the draw period ends, your new monthly payment might jump to $250 or $300, depending on the interest rate and how long you have to repay.

This is a critical moment many borrowers do not plan for. Your payment can double or triple when you move from the draw period to the repayment period. If you have been using the HELOC to cover monthly expenses, you may not have the budget for the higher payment. Some people refinance into a new loan or sell their home to avoid this shock.

A few lenders offer HELOCs that convert to a fixed-rate loan at the end of the draw period, which locks in your interest rate and payment amount. This removes the uncertainty but usually costs more upfront. Ask your lender whether conversion is an option before you sign.

Interest rates and how they change

Most HELOCs have variable interest rates, meaning the rate moves up and down based on a market index — usually the prime rate set by the Federal Reserve. When the prime rate goes up, your HELOC rate goes up, and your monthly payment increases. When the prime rate goes down, your rate and payment decrease. This is different from a fixed-rate mortgage, where your rate and payment stay the same for the entire loan.

Variable rates start lower than fixed rates, which is why HELOCs are attractive when rates are high. But the tradeoff is uncertainty. If you borrow $50,000 at 6 percent and rates rise to 9 percent over the next few years, your interest cost jumps significantly. Some HELOCs have a rate cap — a maximum rate you will ever pay — but not all do. Read the fine print to understand what happens if rates spike.

A few lenders offer fixed-rate HELOCs, where your rate and payment do not change. These are less common and usually cost more, but they eliminate the risk of payment shock from rising rates. If you are on a tight budget or plan to keep the HELOC for many years, a fixed rate may be worth the extra cost.

How much you can borrow

Your HELOC credit limit depends on four main factors: your home's current market value, how much you still owe on your mortgage, your credit score, and your income. Most lenders let you borrow up to 80 or 85 percent of your home's equity. If your home is worth $400,000 and you owe $250,000 on your mortgage, your equity is $150,000. At 80 percent, your maximum HELOC would be around $120,000.

Lenders also look at your credit score and payment history. A higher score usually means a higher credit limit and a lower interest rate. They verify your income to make sure you can afford the payments, though the income requirement is often lower for HELOCs than for other loans because the home is collateral.

Your home's value can change, and so can your credit limit. If your home appreciates, your equity grows and your potential credit limit rises. If your home loses value or your credit score drops, your limit may shrink. Some lenders reduce or freeze HELOC limits during economic downturns, even if you have never missed a payment.

Costs and fees to expect

Opening a HELOC involves several costs. An process fee (typically $100 to $300) covers the cost of processing your request. An appraisal fee ($300 to $700) pays for a professional assessment of your home's value. A title search and insurance ($200 to $400) confirms you own the home and protects the lender if someone else claims a stake in it. Some lenders charge an origination fee (0.5 to 1 percent of your credit limit) for setting up the line of credit.

Once the HELOC is open, you may face an annual fee ($50 to $200) just to keep the account active, though many lenders waive this if you use the line. If you miss a payment, you will owe a late fee (typically $25 to $35). Some lenders charge a prepayment penalty if you pay off the balance early, though this is less common with HELOCs than with mortgages.

Add up all these costs before you open a HELOC. If you only need to borrow $5,000 and the total fees are $1,500, the HELOC may not be the cheapest option. A personal loan or credit card might cost less for a small, short-term need.

Risks of borrowing against your home

The biggest risk is that your home is collateral. If you cannot pay back the HELOC, the lender can foreclose and sell your house. This is not a threat the lender makes lightly — foreclosure is expensive and time-consuming — but it is a real consequence. Before you borrow, make sure you can afford the payments even if your income drops or interest rates rise.

A second risk is payment shock at the end of the draw period. If you have been paying $200 a month in interest and suddenly owe $400 a month in principal and interest, you need to be ready. Calculate what your payment will be when the draw period ends and make sure it fits your budget.

A third risk is that you might borrow more than you can repay. Because a HELOC feels like information programs — you can access it whenever you want — it is straightforward to overspend. Before you borrow, decide exactly what you need the money for and stick to that amount. Do not treat a HELOC as an emergency fund or a way to cover ongoing expenses you cannot otherwise afford.

When a HELOC makes sense versus other borrowing options

A HELOC is usually the cheapest way to borrow a large amount of money over several years, because interest rates are lower than credit cards or personal loans. If you need $30,000 for a home renovation and can afford the payments, a HELOC often costs less than a personal loan at the same amount.

A HELOC is also useful if you do not need all the money at once. If you are planning a series of home repairs over the next two years, you can borrow as you go and pay interest only on what you have used. A fixed personal loan would require you to borrow the full amount upfront and pay interest on the whole thing when ready.

A HELOC is not the right choice if you need money for a short-term emergency. The process and appraisal process takes two to four weeks, so you cannot access the money quickly. A credit card or personal loan is faster. A HELOC is also not ideal if you are already struggling with debt or have an unstable income, because a payment shock or rate increase could push you into default.

Frequently Asked Questions

Can I have a HELOC and a mortgage at the same time?

Yes. A HELOC is a second lien on your home, meaning it sits behind your mortgage in the repayment order. If you default, the mortgage lender gets paid first from the sale of your home, and the HELOC lender gets what is left. This is why HELOC rates are higher than mortgage rates — the risk is greater.

What happens to my HELOC if I sell my house?

You must pay off the HELOC balance from the sale proceeds before you can transfer the title to the buyer. If you owe $20,000 on the HELOC and your home sells for $400,000 with a $250,000 mortgage, the lender pays off both loans and you receive the remainder. If you owe more than the home is worth, you will need to bring cash to closing to pay off the HELOC.

Can I deduct HELOC interest on my taxes?

Only if you use the borrowed money to buy, build, or improve your home. If you borrow $50,000 against your home equity and use it to pay off credit card debt or buy a car, the interest is not deductible. The IRS limits the deduction to HELOCs of $750,000 or less per person. Consult a tax professional about your specific situation.

What if interest rates drop after I open my HELOC?

Your rate will drop automatically because it is tied to the prime rate. You do not have to do anything. If you have a fixed-rate HELOC and rates drop, you cannot refinance to a lower rate without closing the account and opening a new one, which involves new fees and a new appraisal.

Can I pay off my HELOC early without a penalty?

Most HELOCs do not have prepayment penalties, so you can pay off the balance whenever you want without extra charges. Check your loan agreement to confirm. Paying early saves you interest, but it also closes off access to the credit line unless your lender lets you reborrow as you pay down the balance.