What Is Home Equity? How It Works and How to Use It

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Home equity is the share of your home’s value that you own outright: the home’s current market value minus everything you still owe on loans secured by it. For most homeowners that means market value minus the mortgage balance. A second mortgage, a home equity line of credit or a tax or contractor lien also comes off the value. Equity is what would be left if the home sold at market value and every lien were paid off, before selling costs.

What Is Home Equity?

When you buy a home with a mortgage, the lender holds a lien for the unpaid loan balance, and you hold the rest. That remainder is your equity, often described as your ownership stake.

Two inputs drive the number, and they behave very differently:

• The debt side is precise. Your lender can tell you the exact payoff balance on any given day.
• The value side is an estimate. Until a home sells, its market value is an opinion based on an appraisal, recent comparable sales or an automated valuation model. Any “estimated equity” figure on a mortgage statement, real estate website or credit app is only as accurate as that estimate.

How Home Equity Works

Equity is not a fixed number. It changes whenever either side of the equation moves.

Ways equity increases:

1. Down payment. You have equity the day you close. Putting 20% down gives you 20% equity immediately, assuming the price matches the market value.
2. Principal payments. Only the principal portion of each payment reduces what you owe. On a standard amortizing loan, early payments go mostly to interest, so equity from payments builds slowly at first and faster later.
3. Extra payments. Any amount beyond the required payment, if applied to principal, raises equity dollar for dollar.
4. Appreciation. If local home values rise or you make improvements that add market value, your equity grows without any additional payment.

Ways equity decreases:

1. Falling home values. A drop in market value reduces equity even if you never miss a payment.
2. New borrowing secured by the home. A home equity loan, HELOC draw or cash-out refinance converts equity into debt.
3. Liens. Unpaid property taxes, contractor liens or court judgments attached to the property reduce the equity you could actually collect.

If the debt on a home becomes larger than its value, equity is negative. This is called being underwater or having negative equity. An underwater owner who sells would need to bring money to closing to pay off the lender.

How to Calculate Your Home Equity

The formula is short:

Home equity = Current market value − Total balance of all loans secured by the home

To use it:

1. Estimate your home’s value. Use recent sales of similar homes nearby (agents pull these from the multiple listing service), an online estimate as a rough guide, or a professional appraisal for the most reliable figure.
2. Get your loan balances. Your mortgage statement shows the current principal balance; a payoff quote gives the exact figure, including accrued interest. Add any second mortgage or HELOC balance.
3. Subtract. The difference is your equity in dollars.

You can also express equity as a percentage:

Equity percentage = Home equity ÷ Current market value × 100

Lenders often look at the mirror image of that figure, the loan-to-value ratio (LTV):

LTV = Loan balance ÷ Current market value × 100

Equity percentage and LTV always add up to 100%. Dividing your mortgage balance by your home’s value gives you LTV, not equity. A homeowner with an 80% LTV has 20% equity. When more than one loan is involved, lenders use the combined loan-to-value ratio (CLTV), which adds all secured balances together before dividing by value. Lenders that offer home equity products set a maximum CLTV, which caps how much of your equity you can borrow.

Example of Home Equity

Hypothetical example for illustration only.

Say you buy a home for $300,000 and put 20% down:

• Purchase price: $300,000
• Down payment: $60,000
• Mortgage: $240,000
• Equity at closing: $60,000 (20%)

Over the next two years, $15,000 of your mortgage payments goes to principal, and the home’s value stays at $300,000:

• Loan balance: $225,000
• Equity: $300,000 − $225,000 = $75,000 (25%)

Now assume instead that the home’s value rose by $100,000 over those two years:

• Market value: $400,000
• Loan balance: $225,000
• Equity: $175,000 (about 44%)

Finally, consider a downturn in which the value falls to $270,000:

• Market value: $270,000
• Loan balance: $225,000
• Equity: $45,000 (about 17%)

In the third case you paid the same amount as in the first two, yet your equity is lower than it was at closing. Price movements can outweigh years of principal payments in either direction.

Why Home Equity Matters

It is part of your net worth. When you calculate your net worth, the home’s value is an asset and the mortgage a liability; the difference is your equity. For many households it is one of their largest assets.

It can remove private mortgage insurance. Conventional loans with less than 20% down usually require private mortgage insurance (PMI). Under the federal Homeowners Protection Act, you can ask the lender to cancel PMI once your balance is scheduled to reach 80% of the home’s original value (20% equity), and it must end automatically when the balance is scheduled to reach 78% (22% equity), provided you are current on payments. Lenders may set added conditions for a borrower-requested cancellation, such as a good payment history or proof the value has not declined.

It determines what you walk away with when you sell. Your equity, minus selling costs such as agent commissions, transfer taxes and closing costs, is roughly the cash you would receive at closing. That money is often used as the down payment on the next home.

How to Borrow Against Home Equity

Equity cannot be spent directly. To turn it into cash without selling, you take on a new loan secured by the home. Because the lender can foreclose if you stop paying, these loans are usually easier to qualify for and cheaper than unsecured debt, but that same feature is their main risk.

To qualify, a lender will typically order an appraisal to set the home’s value, check your credit, and review your debt-to-income ratio. Your available equity and the lender’s CLTV limit decide the maximum amount.

Home Equity Loan

A home equity loan, often called a second mortgage, pays you a lump sum at closing. You repay it in fixed monthly installments, usually at a fixed interest rate over a set term, alongside your existing first mortgage. It suits a one-time expense with a known cost, such as a roof replacement or a tuition bill.

Home Equity Line of Credit (HELOC)

A HELOC is a revolving line of credit secured by your home, similar in structure to a credit card. You are approved for a limit, draw what you need, repay it and can draw again. HELOCs usually have a variable interest rate. They are split into two phases:

• Draw period: often 10 years, during which you can borrow and may be allowed to make interest-only payments.
• Repayment period: borrowing stops, and you repay the principal plus interest. Monthly payments can rise sharply at this point, especially if you were paying interest only.

Fixed-Rate HELOC Option

Some lenders let you convert all or part of a HELOC balance to a fixed rate, repaid over a set term like an installment loan, while the rest of the line stays flexible. Limits on conversions, minimum amounts and fees vary by lender.

Cash-Out Refinance

A cash-out refinance replaces your existing mortgage with a new, larger one and pays you the difference in cash. Unlike a home equity loan or HELOC, you end up with a single mortgage rather than two. The trade-off is that you reset your rate and term and pay closing costs, so it makes the most sense when the new rate is not much worse than your current one.

The money from any of these options is not taxable income, because it is borrowed and must be repaid.

Other Ways to Access Equity

• Selling the home converts all of your equity to cash, minus selling costs.
• A reverse mortgage, such as the federally insured Home Equity Conversion Mortgage (HECM) for homeowners 62 and older, lets owners draw on equity without monthly payments, with the loan repaid when the home is sold or the borrower no longer lives there.
• Home equity investment or sharing agreements give you cash today in exchange for a share of the home’s future value. These are not loans, and their costs depend heavily on how much the home appreciates.

Common Uses of Home Equity

• Home improvements. Renovations can raise the home’s value, and interest on borrowing used this way may be tax deductible (see below).
• Debt consolidation. A lower-rate home equity loan can cut interest on high-rate credit card balances. It also turns unsecured debt into debt backed by your house, so running the cards back up leaves you worse off than before.
• Large planned expenses. Tuition, medical bills or a wedding can be financed at a lower rate than many unsecured alternatives.
• Buying another property. A HELOC or cash-out refinance can fund the down payment on a second home or rental property. This adds leverage: two properties now depend on your ability to keep up payments.

How to Build Home Equity

1. Make a larger down payment. More money down means more equity from day one, and 20% down avoids PMI on a conventional loan.
2. Choose an amortizing mortgage, ideally a shorter one. Interest-only payments do not reduce principal during the interest-only period. A 15-year term shifts more of each payment to principal than a 30-year one.
3. Pay extra toward principal. Confirm with your servicer that extra money is applied to principal.
4. Stay longer. More time means more principal paid down and more time to appreciate, though values can also fall.
5. Make value-adding improvements. Some projects add little, so compare what similar upgraded homes in your area sell for before spending heavily.
6. Avoid unnecessary borrowing against the home. Every HELOC draw or cash-out refinance reduces the equity you have built.

Pros and Cons of Borrowing Against Home Equity

Pros

• Easier qualification and lower rates. Because the home secures the loan, approval can be easier and rates typically lower than for credit cards and unsecured personal loans.
• Possible tax deduction. Under IRS rules (Publication 936), interest on a home equity loan or HELOC is deductible only if the money is used to buy, build or substantially improve the home that secures the loan, within overall mortgage debt limits, and only if you itemize deductions.

Cons

• Your home is the collateral. Falling behind on payments can lead to foreclosure, a far more serious outcome than defaulting on a credit card.
• More debt. A new monthly payment reduces cash flow, and higher balances can affect your credit scores and your ability to qualify for other loans.
• Fees and closing costs. Appraisals, origination fees and closing costs raise the total cost above the interest rate alone.
• Rate and payment risk. A variable-rate HELOC costs more if rates rise, and payments jump when the draw period ends.
• Less cushion if values fall. A price decline is more likely to leave you underwater.
• Possible restrictions. Some products limit how the funds can be used.

Limitations of Home Equity

It is illiquid and uncertain. Reaching equity takes a sale, a refinance or a new loan, each of which costs time and money and may require qualifying with a lender. Until a sale closes, the value is only an estimate. Because equity depends on a market price you do not control, a local downturn can erase years of gains.

It is concentrated. Having a large share of your net worth in one house in one location means your wealth rides on a single local market. Investors who treat a home as a real estate investment often weigh that concentration against holdings that are easier to diversify.

Home Equity vs. Related Terms

• Home equity vs. market value. Market value is what the whole house would sell for. Equity is the part of that value that belongs to you after debts.
• Home equity vs. down payment. The down payment is your starting equity, a fixed historical amount. After closing, equity moves with payments and prices.
• Home equity vs. net worth. Equity is one component of net worth, which also includes savings, investments and retirement accounts minus all other debts.
• Home equity vs. assessed value. U.S. property taxes are generally based on the assessed value set by the local tax authority, not on your equity. Two identical homes, one owned free and clear and one with a large mortgage, face the same tax assessment.
• Home equity vs. a home equity loan. Equity is an ownership stake. A home equity loan is debt that uses that stake as collateral.

FAQs

The Bottom Line

Homeowners deciding whether to pay down a mortgage, drop PMI, sell or borrow need an accurate view of their equity. The loan balance is exact, but the value is an estimate until a sale, and price swings can outweigh years of payments. Borrowing against equity usually costs less than unsecured debt, yet it puts the house at risk of foreclosure, so it fits best for planned expenses you can reliably repay.