A HELOC lets you borrow against your home's equity and draw money as you need it, like a credit card backed by your house

A HELOC (home equity line of credit) is a revolving loan secured by the equity you have built in your home. Instead of receiving a lump sum upfront, you get access to a credit line — a maximum amount you can borrow. You draw from that line whenever you choose, pay interest only on what you actually use, and can borrow again as you repay. The lender holds a second mortgage on your home as collateral, meaning if you stop paying, the lender can foreclose.

The process works 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 draw new money and must pay off what you owe. During the draw period, many HELOCs require only interest payments. When the repayment period begins, your payment jumps because you now owe both principal and interest.

Key Takeaways

  • You borrow only what you need during the draw period and pay interest only on the amount you use, not on your full credit line.
  • Interest rates on HELOCs are usually variable, meaning your monthly payment can increase if rates rise, especially after the draw period ends.
  • When the draw period ends, your payment structure changes — you stop drawing and begin repaying principal plus interest, often causing a sharp payment increase.
  • Your home serves as collateral, so defaulting on a HELOC can result in foreclosure, just as with a first mortgage.
  • The application process requires a home appraisal, proof of income, and a credit check, similar to getting a mortgage.

How the draw period works and what you actually pay

During the draw period, you access your credit line by writing checks, using a debit card, or requesting transfers to your bank account — the mechanics vary by lender. You only pay interest on the money you have actually withdrawn, not on your full credit limit. If your line is $50,000 but you draw only $15,000, you pay interest on $15,000.

Most lenders require only interest-only payments during the draw period, though some allow you to pay principal as well. An interest-only payment is lower than a payment that includes principal, which is why many homeowners use HELOCs for ongoing expenses or renovations — the monthly cost stays manageable while they are actively using the money. However, paying interest-only means your balance does not shrink, and when the repayment period arrives, you owe the full amount you borrowed.

Interest rates on HELOCs are typically variable, tied to an index like the prime rate. When the Federal Reserve raises rates, your HELOC rate rises too, and your payment increases. Some lenders offer a fixed-rate option for part or all of your draw, but this usually costs more upfront and may limit how much you can borrow.

What happens when the draw period ends

When your draw period expires — say, after 7 years — you enter the repayment period and can no longer borrow new money. Your lender sends a notice before this happens, but many homeowners are surprised by the payment shock. Instead of paying interest only on $20,000, you now owe principal plus interest on $20,000, spread over the remaining repayment term (often 10 to 20 years). Your monthly payment can double or triple.

If you cannot absorb the higher payment, your options are limited. You can refinance the HELOC into a new loan, pay off the balance with cash, or take out a personal loan — but none of these are automatic, and refinancing depends on your credit and home value at that time. Some homeowners have been caught unable to refinance when home values dropped or their credit declined, leaving them stuck with an unaffordable payment or forced to sell.

Interest rates and how they affect your cost

Most HELOCs use a variable rate, which means your interest rate and payment can change. The rate is usually calculated as an index (like the prime rate) plus a margin set by your lender. When the index rises, so does your rate. When it falls, your rate falls too. This flexibility is why HELOCs often start with lower rates than fixed-rate home equity loans, but it also means your payment is not may provide to stay the same.

Some HELOCs include a rate cap — a maximum rate you will ever pay — but read the fine print. A cap might apply only during the draw period, or it might have a per-year limit (your rate cannot jump more than 1% in a single year) and a lifetime limit (your rate cannot exceed, say, 12% total). Without a cap, your rate can climb significantly if the market shifts.

A few lenders offer fixed-rate HELOCs or allow you to lock in a fixed rate for part of your balance. Fixed rates are higher than variable rates at the start, but they protect you from payment increases. The trade-off is cost: you pay more interest upfront for that certainty.

How much you can borrow and what the lender requires

Most lenders allow you to borrow up to 80% to 85% of your home's equity — the difference between what your home is worth and what you owe on your mortgage. If your home is worth $300,000 and you owe $200,000 on your mortgage, your equity is $100,000. A lender might let you borrow up to $80,000 (80% of $100,000). Some lenders go higher, up to 90%, but this is less common and usually requires excellent credit.

To get a HELOC, you will need a home appraisal (the lender wants to know your home's current value), proof of income, a credit check, and documentation of your existing mortgage. The application process is similar to getting a mortgage, though usually faster and less rigorous. Lenders typically want a credit score of 620 or higher, though better rates go to borrowers with scores above 700. You will also need to show that your debt-to-income ratio is reasonable — that your total monthly debt payments (mortgage, car loans, credit cards, and the new HELOC payment) do not exceed a certain percentage of your gross income.

Comparing HELOCs to home equity loans and cash-out refinancing

A home equity loan is different from a HELOC. With a home equity loan, you receive a lump sum upfront and repay it on a fixed schedule with a fixed rate. You cannot borrow more once the loan closes. A home equity loan is simpler if you know exactly how much you need and want a predictable payment, but it is less flexible if your needs change.

A cash-out refinance replaces your entire mortgage with a new, larger one and gives you the difference in cash. If you owe $200,000 on a $300,000 home and refinance for $250,000, you receive $50,000 in cash. Refinancing makes sense if you can get a better interest rate on your new mortgage, because the rate applies to your entire loan balance, not just the borrowed amount. However, refinancing resets your loan term, so you may pay longer overall.

A HELOC is most useful if you need money over time (like for a renovation that happens in phases) or want to keep money available for emergencies without borrowing it all at once. The downside is the variable rate and the payment shock at the end of the draw period.

Risks and what can go wrong

The biggest risk is the payment increase when the draw period ends. If you have been paying $300 per month in interest only and suddenly owe $800 per month in principal and interest, that is a real hardship if your income has not grown. Plan for this before you take out a HELOC — know what your payment will be in year 8 or 9, not just year 1.

A second risk is a rate spike. If you have a variable-rate HELOC and interest rates climb sharply, your payment can jump 2%, 3%, or more in a single year. This is less common than the draw-period shock, but it happens. A rate cap protects you somewhat, but read the terms carefully.

A third risk is using the HELOC to fund spending rather than an investment in your home or a one-time expense. If you draw $30,000 to pay off credit cards and then run up the credit cards again, you have simply moved debt to your home and increased your total borrowing. If you cannot repay, you risk losing your house.

Finally, if your home value drops or your credit declines, you may not be able to refinance when the draw period ends. You could be locked into an unaffordable payment with no way out except to sell or default.

Frequently Asked Questions

Can I pay off my HELOC early without a penalty?

Most HELOCs have no prepayment penalty, meaning you can pay off your balance whenever you want without extra fees. However, always check your loan documents or ask your lender before signing. Some older HELOCs or specialty products may include a penalty if you pay off within a certain number of years.

What happens if I do not draw any money from my HELOC?

If you do not borrow anything, you typically owe nothing. Some lenders charge an annual fee to keep the line open, but most do not. You pay interest only on money you actually withdraw. However, confirm this with your lender — a few charge a small annual maintenance fee regardless of use.

Can my lender freeze or close my HELOC?

Yes. If your home value drops significantly, your credit score falls, or you miss payments, your lender can freeze your line, preventing new draws. During the 2008 financial crisis, many lenders froze HELOCs when home values plummeted. This is a real risk if you are counting on the line for future access to cash.

Is the interest on a HELOC tax-deductible?

Interest on a HELOC used to improve your home (renovation, repair, addition) may be tax-deductible if you itemize deductions and meet other requirements. Interest on a HELOC used for other purposes (paying off credit cards, funding a vacation) is not deductible. Consult a tax professional about your specific situation, as tax rules are complex and change.

What is the difference between a HELOC and a home equity loan?

A HELOC is a revolving line of credit — you draw, repay, and can draw again. A home equity loan is a one-time lump sum with a fixed repayment schedule. HELOCs are more flexible but have variable rates and payment shocks. Home equity loans are simpler and more predictable but less flexible if your needs change.