A HELOC is a credit line secured by your home's equity

A HELOC (home equity line of credit) is a loan where the lender gives you access to money based on how much equity you have built up in your home. You don't borrow the full amount at once. Instead, you receive a credit card or checkbook and draw money as you need it, up to a limit the lender sets. You pay interest only on the money you actually use, not on the full credit line.

The lender secures the HELOC with a second mortgage on your home. This means if you stop paying, the lender can foreclose and take your house, just as your primary mortgage lender can. Because your home backs the loan, HELOCs typically carry lower interest rates than credit cards or personal loans.

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

Key Takeaways

  • A HELOC lets you borrow against your home's equity and draw money as needed, paying interest only on what you use.
  • Your home secures the loan, so the lender can foreclose if you default, but this also means lower interest rates than unsecured credit.
  • The draw period (when you can borrow) and repayment period (when you cannot) have different rules and payment structures.
  • Your credit score, income, debt-to-income ratio, and the amount of equity in your home all affect whether you can get a HELOC and what rate you receive.

How lenders calculate your borrowing limit

Lenders use your home's current market value and subtract what you still owe on your mortgage to find your equity. They then let you borrow a percentage of that equity—often 80 to 90 percent. For example, if your home is worth $300,000 and you owe $200,000 on your mortgage, you have $100,000 in equity. A lender might let you borrow up to $80,000 through a HELOC.

The lender will order an appraisal or use an automated valuation to confirm your home's value. They also pull your credit report, verify your income, and calculate your debt-to-income ratio (all monthly debt payments divided by gross monthly income). Most lenders want to see a debt-to-income ratio below 43 percent and a credit score of at least 620, though better rates go to borrowers with scores above 700.

Your borrowing limit can change over time. If your home's value drops, the lender may lower your limit or freeze your account. If your home appreciates and you pay down your mortgage, your available equity grows and you may be able to borrow more.

Interest rates and how they change during the draw period

Most HELOCs carry a variable interest rate tied to an index like the prime rate. Your rate is the index plus a margin the lender adds—typically 1 to 3 percentage points. When the index moves, your rate and monthly payment move with it. Some lenders offer a fixed-rate option on part or all of the HELOC, but this usually costs more upfront.

During the draw period, you typically pay interest-only payments. A $50,000 balance at 7 percent interest costs about $292 per month in interest alone. You can pay more if you want to reduce the principal, but you are not required to. This makes the draw period affordable but means your balance may not shrink.

When the draw period ends and the repayment period begins, you can no longer borrow. Your payment structure changes: you now owe both principal and interest, and your monthly payment rises sharply. If you still owe $50,000 at the start of a 15-year repayment period at 7 percent, your payment jumps to roughly $400 per month. This payment shock surprises many borrowers who did not plan ahead.

What you can use a HELOC for

There is no legal restriction on what you spend HELOC money on. People use HELOCs to pay for home renovations, consolidate credit card debt, cover medical bills, fund education, or start a business. Some use it as an emergency fund they can tap if needed.

Using a HELOC to pay off high-interest credit card debt can lower your overall interest cost, since HELOC rates are usually lower. However, this strategy only works if you stop accumulating new credit card debt. If you pay off the cards and then run them back up, you end up with both the HELOC payment and new credit card debt.

Using a HELOC for home improvements that increase your home's value can make financial sense. Using it to fund a vacation or a car purchase is riskier because you are putting your home at stake for something that loses value.

The difference between a HELOC and a home equity loan

A home equity loan is different from a HELOC. With a home equity loan, the lender gives you a lump sum upfront, and you repay it in fixed monthly payments over a set term (usually 5 to 15 years). The interest rate is fixed, so your payment never changes. You cannot borrow more once you have received the money.

A HELOC is more flexible: you draw money as you need it, pay interest only on what you use, and can borrow again after you repay. But this flexibility comes with a variable rate and the risk of payment shock when the repayment period starts.

Choose a home equity loan if you need a specific amount upfront and want predictable payments. Choose a HELOC if you need ongoing access to money and can handle a variable rate and a higher payment later.

Costs and fees to expect

Beyond interest, HELOCs carry several fees. An origination fee (typically 2 to 5 percent of the credit limit) covers the lender's processing costs. An appraisal fee ($300 to $700) pays for the home valuation. Some lenders charge an annual maintenance fee ($50 to $150 per year) just to keep the account open.

If you close the HELOC within a certain period (often 3 to 5 years), some lenders charge an early closure fee. A few lenders charge a draw fee each time you access money, though this is less common.

Ask the lender for a written disclosure of all fees before you sign. The Truth in Lending Act requires lenders to provide this, usually called a "Loan Estimate" or "Disclosure Statement." Compare the total cost across lenders, not just the interest rate.

Risks of using a HELOC

The biggest risk is foreclosure. If you cannot pay, the lender can take your home. This is different from credit card debt, where the worst outcome is a damaged credit score. With a HELOC, you are gambling with your housing.

A second risk is payment shock. Many borrowers borrow heavily during the draw period, make only interest payments, and are unprepared when the repayment period begins and the payment doubles or triples. If your income drops or interest rates rise sharply, you may not be able to afford the new payment.

A third risk is a frozen account. If your home's value drops, your credit score falls, or you miss payments, the lender can freeze your HELOC and prevent you from drawing more money. This leaves you without the emergency fund you were counting on.

A fourth risk is rate volatility. If interest rates rise significantly, your monthly payment can become unaffordable. Lenders sometimes set a rate cap (the highest your rate can go), but read the fine print to confirm.

Frequently Asked Questions

Can I get a HELOC if I have bad credit?

Most lenders require a credit score of at least 620, though rates are much better above 700. Some lenders specialize in lower credit scores but charge higher rates and fees. You may also need a larger down payment (lower loan-to-value ratio) to offset the risk. Shop multiple lenders—requirements vary.

What happens to my HELOC if the housing market crashes?

If your home's value drops below what you owe on your mortgage, you have negative equity and cannot borrow through a HELOC. The lender may also freeze your account or lower your credit limit. If you already borrowed money, you still owe it even if your home is worth less.

Can I convert my HELOC to a fixed rate?

Some lenders let you lock in a fixed rate on part or all of your HELOC balance, usually for an additional fee or a slightly higher rate. This protects you from rate increases but removes the flexibility of a variable-rate line. Ask your lender whether this option is available and what it costs.

What if I cannot pay when the repayment period starts?

Contact your lender immediately. Some lenders offer a renewal or extension of the draw period, though this is not may provide. Others may convert the HELOC to a fixed-rate loan with a longer term to lower the payment. Ignoring the problem will damage your credit and put your home at risk of foreclosure.

Do I have to use the full credit limit?

No. You can open a HELOC and borrow only what you need. You pay interest only on the money you actually use. Many people open a HELOC as an emergency fund and never touch it, paying only a small annual fee if one applies.