Understanding equity

What Is Home Equity and How Is It Calculated?

Home equity is the share of your home you own outright. It is the difference between what your home is worth today and the total you still owe against it.

It is the single most useful number a homeowner can know, because it determines what you can borrow, what you would walk away with in a sale, and how exposed you are if prices fall.

The formula

Equity = current market value − all loan balances secured by the home. That includes your first mortgage, any second mortgage, a HELOC balance, and any liens.

If your home is worth $450,000, your mortgage balance is $195,000 and you carry a $15,000 HELOC balance, your equity is $240,000 — about 53% of the home's value.

Where the two inputs come from

  • Value: a recent appraisal, a comparable sale on your street, or your county assessor's estimate. Automated estimates can be off by 5–10%, so treat them as a range.
  • Balances: your latest mortgage statement shows the payoff balance, which is slightly higher than the principal balance because it includes accrued interest.

How equity builds

Two forces move it. Amortization pays down principal a little more every month, and market appreciation raises the value side of the equation.

Early in a 30-year loan, most of your payment is interest, so equity builds slowly through payments and quickly through the market. Later, that reverses.

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Frequently asked

No. Your down payment is where your equity started. Since then it has moved with your loan balance and your home's market value.

Yes. If you owe more than the home is worth — often called being underwater — your equity is negative until prices recover or you pay the balance down.

Part of The Homeowner's Guide to Home Equity.

More on understanding equity

How Much Equity Do I Have in My Home?

Find out how much equity you have in your home in about a minute, using your home value and loan balances.

What Is Loan-to-Value (LTV) and Why Does It Matter?

LTV is the ratio lenders use to price your loan. Here is how to calculate it and what thresholds matter.

Does Home Equity Affect My Credit Score?

Home equity itself does not affect your credit score — but borrowing against it can. Here is how.