If you have built up equity in your home, a home equity line of credit, or HELOC, can give you access to a large, flexible pool of money at a lower interest rate than most credit cards or personal loans. That flexibility comes with responsibility, because your house secures the debt. This guide explains how a HELOC is structured, how lenders decide how much you can borrow, what the costs look like, and when using one makes sense.
What a HELOC is
A HELOC is a revolving line of credit secured by your home. It works somewhat like a credit card: you are approved for a maximum credit limit, you borrow only what you need, and you pay interest only on the balance you actually use. As you repay, the credit becomes available again during the draw period.
Because the loan is secured by your property and usually sits behind your first mortgage, it is considered a second lien. If you fail to repay, the lender can foreclose, although in practice the first mortgage holder gets paid first from any sale.
HELOC vs home equity loan
A home equity loan is a lump sum with a fixed interest rate and fixed monthly payments. A HELOC is a line you draw from over time, usually at a variable rate. A home equity loan suits a single, known expense. A HELOC suits projects or needs that unfold over months or years, such as a phased renovation.
The two phases of a HELOC
The draw period
The draw period is the window, often 10 years, during which you can borrow from the line. Many HELOCs require only interest payments during this phase, although you can pay principal if you want. Interest-only payments keep costs low early on but do nothing to reduce the balance.
The repayment period
When the draw period ends, you can no longer borrow, and the loan enters the repayment period, commonly 10 to 20 years. Your payment now includes principal and interest, and it can rise sharply. Someone who has been paying interest only on a $60,000 balance may see the monthly payment roughly double or more once principal is added. Plan for this transition well before it arrives.
Some HELOCs end with a balloon payment instead of a repayment period, requiring the full balance to be paid at once. Read the agreement to know which structure you have.
How much you can borrow
Lenders look at your combined loan-to-value ratio (CLTV), which compares the total of all loans secured by your home with its appraised value. Many lenders cap CLTV at 80% to 85%, though some go higher for strong borrowers.
Here is a simple example. Your home appraises at $400,000 and you owe $240,000 on your mortgage. At an 85% CLTV limit, total borrowing can reach $340,000. Subtract the existing $240,000 mortgage and the maximum HELOC limit is about $100,000.
Lenders also review your credit score, your debt-to-income ratio, and proof of stable income. A higher credit score usually earns a lower margin and a larger credit line.
How HELOC interest rates work
Most HELOC rates are variable and tied to an index, usually the prime rate published in The Wall Street Journal, plus a margin set by the lender. If the prime rate is 7% and your margin is 1%, your rate is 8%. When the Federal Reserve raises or lowers its policy rate, the prime rate typically moves with it, and your HELOC rate adjusts accordingly.
Introductory rates and caps
Some lenders offer a low introductory rate for the first several months. Find out what the rate becomes afterward. Federal rules require HELOCs to have a lifetime rate cap, the maximum rate the loan can reach, which must be disclosed in your agreement.
Fixed-rate options
Many lenders let you convert part of your balance to a fixed rate for a set term. This can protect you from rising rates on a large draw, sometimes for a fee.
Costs and fees to expect
HELOCs often cost less to open than a cash-out refinance, but they are not always free. Possible costs include:
- Appraisal fees, though some lenders use automated valuations
- Application or origination fees
- Title search and recording fees
- Annual maintenance fees
- Early closure fees if you close the line within the first few years
- Inactivity fees on some lines
Some lenders advertise no closing costs but recover them if you close the account early. Ask for a written list of all fees.
Your right of rescission
Under the federal Truth in Lending Act, when a HELOC is secured by your primary residence, you generally have three business days after closing to cancel without penalty. This cooling-off period is called the right of rescission.
Tax treatment of HELOC interest
Interest on a HELOC is deductible only if the money is used to buy, build, or substantially improve the home that secures the loan, and only if you itemize deductions. The deduction is also subject to the overall limit on mortgage debt. Interest on HELOC money used for a car, a vacation, or credit card payoff is not deductible. Keep records showing how you used the funds.
Smart and risky uses of a HELOC
Uses that often make sense
- Home improvements that maintain or add value to the property
- A backup emergency source for homeowners who keep the line open but unused
- Large planned expenses spread out over time, where the rate is lower than alternatives
Uses to approach with caution
- Paying off credit cards. The lower rate helps only if you stop adding new card debt. Otherwise, you end up with both card balances and a loan secured by your home.
- Discretionary spending. Vacations or luxury purchases convert unsecured wants into secured debt.
- Investing. Borrowing against your home to invest exposes you to market losses while your house remains at risk.
Risks to understand before you sign
- Rate increases. Payments can rise when the prime rate does.
- Payment shock. The jump from interest-only to full repayment can be large.
- Line freezes or reductions. Lenders can freeze or reduce your line if your home value drops significantly or your finances change, as many did during the 2008 housing downturn.
- Foreclosure risk. Your home is collateral.
Steps to apply for a HELOC
- Estimate your equity using a recent home value and your mortgage balance.
- Check your credit reports and scores.
- Compare offers from banks, credit unions, and online lenders, focusing on margin, caps, fees, and draw terms.
- Gather documents, including pay stubs, tax returns, mortgage statements, and homeowners insurance details.
- Complete the application and appraisal, then review the disclosures before closing.
Frequently Asked Questions
Can I get a HELOC with a low credit score?
Some lenders approve HELOCs for borrowers with fair credit, but approval is harder and margins are higher. Many lenders look for scores in the mid-600s or higher, along with sufficient equity and a manageable debt-to-income ratio.
Does opening a HELOC hurt my credit?
The application usually triggers a hard inquiry, which can lower your score slightly for a short period. Using a large share of the line may also affect your score, depending on how credit bureaus report it.
What happens to my HELOC if I sell my home?
The HELOC balance must be paid off at closing from the sale proceeds, along with your first mortgage. The line is then closed.
Is HELOC interest tax deductible?
It can be, but only when you itemize and the funds were used to buy, build, or substantially improve the home securing the loan. Interest on money used for other purposes is not deductible.
Can a lender freeze my HELOC?
Yes. Federal rules allow a lender to freeze or reduce your line if your home’s value declines significantly or if it reasonably believes you can no longer meet your repayment obligations.
This article is for general informational purposes only and is not legal, medical, tax, or financial advice. Rules vary by state and change over time; confirm details with the relevant agency or a licensed professional.
