A HELOC lets you borrow against the equity you have built in your home, then draw from that borrowed amount as you need it

A home equity line of credit (HELOC) works like a credit card backed by your house. Your lender looks at your home's current value, subtracts what you still owe on your mortgage, and that difference is your equity. The lender then offers you a credit line — typically 80 to 90 percent of that equity — that you can borrow from whenever you want during the draw period, which usually lasts 5 to 10 years.

You do not have to borrow the full amount at once. You draw what you need, when you need it, and pay interest only on what you have actually borrowed. Once the draw period ends, the repayment period begins — usually 10 to 20 years — and you can no longer draw new money. Instead, you make monthly payments to pay back everything you borrowed plus interest.

Because your home secures the loan, HELOCs typically carry lower interest rates than credit cards or personal loans. The trade-off is that if you cannot pay back what you borrowed, the lender can foreclose on your house.

Key Takeaways

  • A HELOC is a revolving credit line secured by your home's equity, meaning you can borrow, repay, and borrow again during the draw period.
  • You pay interest only on the amount you actually borrow, not on the full credit line available to you.
  • The draw period (when you can borrow) and repayment period (when you pay back) are separate phases with different rules and payment structures.
  • Interest rates on HELOCs are usually variable, meaning your monthly payment can change if the market rate changes.
  • Your home is collateral for the loan, so defaulting can result in foreclosure.

How the draw period works and what you can borrow

During the draw period, you have access to your credit line and can borrow money in whatever amounts you choose. You might write a check, use a debit card linked to the account, or request a transfer to your bank account — the method depends on your lender. Some HELOCs let you draw money multiple times; others set a limit on the number of draws you can make per month or year.

You are not required to use the full amount. If your credit line is $50,000 but you only need $15,000, you borrow $15,000 and pay interest only on that $15,000. As you pay back what you borrowed, that money becomes available to borrow again — just like a credit card. This is why it is called a revolving line of credit.

The draw period typically lasts 5 to 10 years, though some lenders offer longer or shorter periods. During this time, your monthly payment usually covers interest only, not principal. This keeps payments low while you are actively drawing money, but it also means you are not reducing what you owe.

Interest rates and how payments change over time

Most HELOCs carry a variable interest rate, which means the rate is tied to a market index — usually the prime rate — and changes when that index changes. If the prime rate goes up, your interest rate goes up, and your monthly payment increases. If the prime rate goes down, your payment decreases. Some lenders offer a fixed-rate option for part or all of the borrowed amount, but this is less common and may come with a higher starting rate.

During the draw period, your payment is typically interest-only. If you borrowed $20,000 at 8 percent interest, your monthly payment would be roughly $133 (though the exact amount depends on how your lender calculates it). If the rate rises to 9 percent, your payment rises to about $150. If rates fall to 7 percent, your payment falls to about $117.

When the draw period ends and the repayment period begins, your payment structure changes. You can no longer borrow new money, and your payment now includes both interest and principal. This means your monthly payment usually increases significantly, even if interest rates stay the same. A $20,000 balance might require $200 to $250 per month during repayment, depending on the repayment term and current rates.

What happens when the draw period ends

The transition from draw period to repayment period is a critical moment many borrowers overlook. On the day the draw period ends, you lose the ability to borrow more money. Your account converts to a standard loan, and you must begin paying back everything you borrowed.

If you have not paid down any of the principal during the draw period — which is common when payments are interest-only — you now owe the full amount you borrowed. Your new monthly payment covers both interest and principal over the repayment term, which is typically 10 to 20 years. This payment is often two to three times higher than your draw-period payment.

Some borrowers refinance at this point, taking out a new HELOC or a home equity loan to avoid the payment shock. Others pay down the balance during the draw period specifically to reduce what they owe when repayment begins. A few lenders allow you to extend the draw period or convert part of the balance to a fixed-rate loan, but these options vary by lender and may not be available to everyone.

Comparing HELOCs to home equity loans and cash-out refinances

A home equity loan is different from a HELOC in one key way: you receive the full borrowed amount upfront as a lump sum, and you begin repaying it when ready on a fixed schedule. There is no draw period. You pay a fixed interest rate and a fixed monthly payment for a set term, usually 5 to 15 years. This makes budgeting easier because your payment never changes, but you cannot borrow more later without taking out a second loan.

A cash-out refinance replaces your entire mortgage with a new one for a larger amount, and you receive the difference in cash. This works well if you want a large sum and current mortgage rates are favorable, but it resets your loan term and affects your primary mortgage payment. HELOCs and home equity loans leave your mortgage untouched.

HELOCs are most useful when you need money over time rather than all at once — for renovations, education, or unexpected expenses — because you borrow only what you need and pay interest only on that amount. Home equity loans work better if you need a specific lump sum and want a predictable payment. Cash-out refinances make sense if you are refinancing your mortgage anyway and want to pull out equity at the same time.

Risks and costs to understand before borrowing

Because your home is collateral, failure to repay a HELOC can result in foreclosure. This is a serious risk that does not exist with credit cards or personal loans. If you fall behind on payments, the lender can start foreclosure proceedings and force the sale of your home to recover what you owe.

Variable interest rates create payment uncertainty. If rates rise sharply, your monthly payment could become unaffordable. Some HELOCs have rate caps that limit how high the rate can go, but not all do. Before opening a HELOC, check whether there is a cap and how high your payment could climb if rates rise significantly.

The payment shock at the end of the draw period catches many borrowers off guard. If you have been paying $150 per month in interest-only payments and suddenly face a $300 payment that includes principal, you need to be prepared. Some people cannot afford the new payment and end up refinancing or defaulting.

HELOCs also have closing costs — typically 2 to 5 percent of the credit line — and some charge annual fees. A few lenders waive these fees, but most do not. There may also be early termination fees if you close the account before the draw period ends.

How lenders decide how much you can borrow

Lenders use a formula based on your home's current market value and your existing mortgage balance. If your home is worth $300,000 and you owe $200,000 on your mortgage, your equity is $100,000. Most lenders will let you borrow up to 80 or 90 percent of that equity, so your credit line would be $80,000 to $90,000.

Your credit score, income, and debt-to-income ratio also matter. Lenders want to see that you can afford to borrow and repay. A higher credit score usually means a lower interest rate and a higher credit line. If your income is low or you already carry significant debt, the lender may offer a smaller line or decline you altogether.

The lender will order an appraisal to determine your home's current value. This appraisal costs $300 to $500 and is typically paid by you upfront or rolled into the closing costs. If your home's value has dropped since you bought it, your available equity — and therefore your credit line — will be smaller.

Frequently Asked Questions

Can I use a HELOC for anything, or are there restrictions on what I can borrow for?

Most lenders do not restrict what you use the money for. You can borrow for home renovations, education, debt consolidation, medical bills, or any other purpose. Some lenders may ask what you plan to use the money for during the process, but they typically do not enforce restrictions after you receive the credit line.

What happens to my HELOC if my home's value drops?

If your home's value falls, your equity decreases, and your lender may reduce your available credit line or freeze it entirely. During the 2008 housing crisis, many lenders froze HELOCs when home values plummeted, leaving borrowers unable to access money they thought they had. This is a real risk in a declining market.

Do I have to pay back the full balance before the draw period ends?

No. When the draw period ends, any unpaid balance converts to the repayment phase, and you begin making principal-and-interest payments. You do not have to pay it all back by the end of the draw period, but you will owe it over the repayment period that follows.

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

Yes. A HELOC is a second lien on your home, sitting behind your primary mortgage. If you default on both, the mortgage lender gets paid first from the sale proceeds, and the HELOC lender gets whatever is left. This is why HELOC rates are usually higher than mortgage rates.

What is the difference between a fixed-rate and variable-rate HELOC?

A variable-rate HELOC has an interest rate that changes with market conditions, so your payment fluctuates. A fixed-rate HELOC locks in one rate for the life of the loan, so your payment stays the same. Fixed-rate HELOCs are less common and usually carry a higher starting rate, but they eliminate payment uncertainty.