Learn About Home Equity Lines of Credit

What Is a Home Equity Line of Credit?

A home equity line of credit, commonly called a HELOC, is a type of loan that lets homeowners borrow money using the equity they have built up in their home. Equity is the difference between what your home is worth and what you still owe on your mortgage. For example, if your home is worth $300,000 and you owe $200,000 on your mortgage, you have $100,000 in equity.

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A HELOC works similarly to a credit card. A lender gives you a credit limit based on the equity in your home, and you can borrow money from that limit whenever you need it. You only pay interest on the amount you actually borrow, not on your entire credit limit. This is different from a home equity loan, where you receive one lump sum of money upfront and repay it over a fixed period with a set interest rate.

HELOCs typically have two phases: a draw period and a repayment period. During the draw period, which usually lasts 5 to 10 years, you can withdraw money as needed and make interest-only payments. After the draw period ends, you enter the repayment period, which may last 10 to 20 years. During this phase, you can no longer withdraw money, and you must make principal and interest payments.

Many homeowners use HELOCs to pay for home renovations, consolidate debt, cover medical expenses, or fund education costs. Because the loan is secured by your home, interest rates on HELOCs are often lower than rates on credit cards or personal loans. However, this also means your home serves as collateral, so failing to repay could put your home at risk.

Practical takeaway: Understanding the basic structure of a HELOC—how it functions like a credit card backed by your home's equity—helps you determine whether this type of borrowing matches your financial situation and borrowing needs.

How Home Equity Lines of Credit Work

The process of obtaining and using a HELOC involves several steps. First, you need to have built up equity in your home. Most lenders require you to have at least 15 to 20 percent equity before they will consider offering a HELOC. If you owe $200,000 on a home worth $300,000, your equity is $100,000, and you would likely meet this requirement.

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Once you approach a lender, they will evaluate your creditworthiness, income, and the value of your home. The lender will order an appraisal to confirm the current market value of your property. Based on this appraisal and your financial situation, the lender determines your credit limit. Many lenders set your HELOC limit at 75 to 85 percent of your home's value, minus what you still owe on your mortgage. So if your home is worth $300,000 and you owe $200,000, and the lender uses an 80 percent valuation, your potential HELOC limit would be $40,000 ($300,000 × 0.80 = $240,000 − $200,000 = $40,000).

During the draw period, you access the funds you need through checks, a debit card, or electronic transfers. You are only required to make minimum payments, which are typically interest-only during this phase. Once the draw period ends, the repayment period begins. At this point, you cannot withdraw additional funds, and your monthly payment increases because you must now repay both principal and interest.

Interest rates on HELOCs are usually variable, meaning they change over time based on market conditions and the prime interest rate. When interest rates rise, your monthly payment increases. When rates fall, your payment decreases. Some lenders may offer fixed-rate HELOCs or the option to lock in a fixed rate for part of your credit line, which provides more payment stability but may come with a slightly higher interest rate.

Practical takeaway: Knowing how lenders calculate your credit limit and how the draw and repayment phases work allows you to plan your borrowing strategy and understand when your payments will change and why.

Advantages and Disadvantages of HELOCs

Home equity lines of credit offer several notable benefits. The interest rates are typically much lower than credit cards or personal loans because the debt is secured by your home. Many homeowners can deduct the interest on a HELOC from their taxes, provided the borrowed money was used to buy, build, or substantially improve the home. This tax deduction can make borrowing even more affordable. Additionally, HELOCs offer flexibility—you borrow only what you need, when you need it, which can help you avoid taking on unnecessary debt.

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The flexibility of a HELOC is particularly useful for ongoing projects or unpredictable expenses. For instance, if you are renovating your home and don't know the exact final cost, a HELOC allows you to draw funds as contractors submit invoices. Similarly, if you face unexpected medical bills or home repairs, you have access to funds without applying for a new loan each time.

However, HELOCs come with significant risks and disadvantages. Because your home serves as collateral, you could lose your home if you cannot repay what you borrow. Variable interest rates mean your monthly payment can increase substantially if market rates rise. If you already have a mortgage, adding a HELOC means another monthly payment obligation. Some homeowners become tempted to overspend because they have access to a large pool of credit.

After the draw period ends, payment shock can be a serious problem. For example, if you had a $40,000 HELOC with a 7 percent interest rate and made interest-only payments of about $233 per month during the draw period, your payment could jump to $500 or more monthly during repayment when you owe principal and interest. Additionally, if your home's value drops significantly, you may lose access to the full credit limit or the lender may freeze your account entirely.

Practical takeaway: Carefully weigh the low interest rates and flexibility of a HELOC against the risks of using your home as collateral, variable payments, and the potential for payment increases when the repayment period begins.

Comparing HELOCs to Other Borrowing Options

Understanding how HELOCs compare to other ways of borrowing helps you make an informed decision. A home equity loan is different from a HELOC. With a home equity loan, you receive a lump sum of money upfront and repay it over a fixed period with a fixed interest rate. This means your monthly payment never changes. Home equity loans work well if you need a specific amount of money for a known purpose, such as paying off a car or completing a defined renovation project. However, you cannot access additional funds later without taking out another loan.

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Credit cards offer flexibility similar to a HELOC, but with much higher interest rates. Credit card interest rates typically range from 15 to 25 percent, while HELOC rates are usually 6 to 10 percent. Credit cards are useful for small, short-term purchases you plan to pay off quickly, but they become very expensive for larger amounts or longer repayment periods. Additionally, credit cards are unsecured, meaning you won't lose an asset if you default, but this also means lenders charge higher rates to offset their risk.

Personal loans are another option. These are unsecured loans from banks or online lenders, with fixed interest rates and fixed repayment periods. Personal loan rates typically fall between credit card and HELOC rates. Personal loans work well if you don't own a home, have limited home equity, or prefer not to use your home as collateral. However, they usually have higher interest rates than HELOCs and don't offer the flexibility to draw funds over time.

Cash-out mortgage refinancing allows you to refinance your existing mortgage for a larger amount and receive the difference in cash. This can offer competitive interest rates if current rates are lower than your existing mortgage rate. However, refinancing extends the life of your mortgage and involves closing costs. It works best if you need a large sum and can benefit from a lower overall interest rate on your mortgage.

Practical takeaway: Comparing HELOCs to home equity loans, credit cards, personal loans, and refinancing helps you choose the borrowing method that best matches your needs, risk tolerance, and financial situation.