A HELOC lets you borrow against the equity you've built in your home, then draw that money 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 lets you borrow up to a percentage of that difference. You don't have to take all the money at once — you draw it when you need it, and you pay interest only on what you've actually borrowed.

The process has two phases. During the draw period (usually 5 to 10 years), you can borrow and repay repeatedly, like using a credit card. After that comes the repayment period (typically 10 to 20 years), when you can no longer draw new money and must pay back what you owe.

HELOCs are risky because your home is collateral. If you stop paying, the lender can foreclose. But they're useful for large, unpredictable expenses — medical bills, home repairs, education — because you only pay interest on money you actually use.

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.
  • Interest rates on HELOCs are usually variable, so your monthly payment can rise or fall as the market rate changes.
  • You enter a repayment-only phase after the draw period ends, when you can no longer borrow new money but must pay back the balance.
  • Your home serves as collateral, so defaulting on a HELOC can result in foreclosure.
  • HELOCs work best for expenses you can't predict in advance, since you pay interest only on money you've drawn.

How the draw period works

During the draw period, you have access to a credit line — say $50,000 — and you can withdraw money whenever you want. You might write a check, use a debit card linked to the account, or request a transfer to your bank account. The mechanics vary by lender, but most offer multiple ways to access your funds.

You're required to make a minimum payment each month, but that payment is often interest-only during the draw period. If you've borrowed $10,000 and the interest rate is 7%, you might pay around $58 per month. If you pay down the balance to $5,000, your payment drops. If you borrow more, it rises. This flexibility is the main appeal of a HELOC over a traditional home equity loan, which gives you a lump sum and a fixed payment from day one.

The draw period length matters because it determines how long you can keep borrowing. A 10-year draw period means you have a decade to access the line; after that, the account freezes and you move into repayment mode. Some lenders allow you to renew the line at the end of the draw period, but renewal isn't may provide and rates may change.

What happens when the draw period ends

When the draw period expires, the HELOC converts to a repayment-only account. You can no longer borrow new money. Instead, you must pay back the full balance over the repayment period, which typically lasts 10 to 20 years.

This is where many homeowners face a shock. During the draw period, you might have paid $100 per month in interest-only payments. When repayment begins, that same $10,000 balance now requires a principal-and-interest payment of $150 to $200 per month, depending on the repayment term and rate. Your payment can jump significantly, and your budget needs to absorb it.

Some lenders offer a conversion option that lets you lock in a fixed rate on part or all of your balance before the draw period ends. This protects you if rates have risen, but it also means you lose the flexibility of a variable rate if rates fall. Read your HELOC agreement to see whether conversion is available and what the terms are.

Interest rates and how they change

Most HELOCs carry a variable interest rate tied to a market index — usually the prime rate published by the Federal Reserve. Your rate is the index plus a margin set by your lender. If the prime rate is 8% and your margin is 1%, your rate is 9%.

When the prime rate moves, your HELOC rate moves with it, usually within 30 to 45 days. Your payment adjusts accordingly. This means your monthly cost can rise or fall unpredictably. Some HELOCs include a rate cap — a ceiling above which your rate cannot climb — but not all do. Check your disclosure documents to see whether a cap exists and what it is.

The variable-rate structure is why HELOCs are riskier than fixed-rate home equity loans. If rates spike, your payment can double or triple. Borrowers who took out HELOCs in the early 2000s at 3% rates faced payments that jumped to 8% or higher during the 2008 financial crisis. Budget for the possibility that your payment will increase, and avoid borrowing the full amount of your available credit if you can't afford a higher payment later.

How much you can borrow

Lenders typically allow you to borrow up to 80% to 90% of your home's equity. If your home is worth $300,000 and you owe $200,000 on your mortgage, your equity is $100,000. A lender offering 80% of equity would let you borrow up to $80,000 through a HELOC.

The actual amount depends on your credit score, income, debt-to-income ratio, and the lender's own standards. A strong credit score and stable income make it easier to get approved for a larger line. Some lenders also consider the loan-to-value ratio of your first mortgage — if you're already highly leveraged, they may offer less.

The credit limit you receive isn't the same as the amount you must borrow. You can open a $50,000 HELOC and use only $10,000 of it. You pay interest only on the $10,000. This is why HELOCs work well for emergencies: you have the money available if you need it, but you don't pay for it until you actually use it.

Costs and fees to watch for

Beyond interest, HELOCs come with several potential costs. An origination fee (typically 2% to 5% of the credit limit) covers the lender's processing costs. An appraisal fee ($300 to $700) is required so the lender can verify your home's value. Some lenders charge an annual fee ($50 to $300) just to maintain the account, whether you use it or not.

If you close the account within a certain period — often 3 to 5 years — you may owe an early closure fee ($300 to $500). Some lenders charge a draw fee each time you access funds, though this is less common. A few charge inactivity fees if you don't use the line for a set period.

Ask your lender for a complete fee schedule before you sign. The Truth in Lending Act requires lenders to disclose all costs, so compare the full picture across multiple lenders, not just the interest rate.

HELOC vs. home equity loan: which is right for you

A home equity loan gives you a lump sum upfront with a fixed interest rate and a fixed monthly payment. A HELOC gives you a flexible credit line with a variable rate and a payment that changes. The choice depends on what you're borrowing for and how you manage money.

Choose a home equity loan if you know exactly how much you need (a kitchen renovation, a car purchase) and you want predictability. Your payment never changes, and you know your total cost upfront. Choose a HELOC if you face ongoing or unpredictable expenses (medical treatment, home repairs over time) and you want to borrow only what you use.

HELOCs also work better if you're disciplined about repayment. The flexibility that makes them useful can also tempt you to borrow more than you should. If you struggle with credit card debt or overspending, a fixed home equity loan forces you to stick to a plan.

Frequently Asked Questions

Can I use a HELOC for anything I want?

Yes. Lenders don't restrict how you spend HELOC money. People use them for home repairs, medical bills, education, debt consolidation, and business expenses. However, using a HELOC to pay off credit card debt only works if you don't run up the credit cards again — otherwise you've just added another debt on top of the original one.

What happens to my HELOC if my home value drops?

Your lender may freeze or reduce your credit line if your home's value falls significantly. During the 2008 housing crisis, many homeowners found their available credit cut in half or eliminated entirely, even though they'd done nothing wrong. This is a real risk of using a HELOC as an emergency fund — the money may not be there when you need it most.

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

No. You can carry a balance into the repayment period. However, once the draw period ends, you can no longer borrow new money, and your payment structure changes to principal-and-interest. Plan ahead so the jump in your payment doesn't strain your budget.

Can I lock in a fixed rate on my HELOC?

Some lenders offer the option to convert part or all of your HELOC balance to a fixed rate before the draw period ends. This protects you if rates rise, but it also means you lose the flexibility of a variable rate. Check your agreement to see if conversion is available and what the terms are.

What if I can't afford my HELOC payment?

Contact your lender immediately. Some lenders offer forbearance or payment reduction options, though these are less common for HELOCs than for mortgages. Defaulting on a HELOC can lead to foreclosure, so don't ignore the problem. If you're struggling with multiple debts, a credit counselor can help you explore options.