Home Equity

Home equity is one of the primary components of household wealth in the United States. According to Federal Reserve data, home equity has historically represented a substantial share of the net worth of American households, particularly for middle-income families for whom the family home is often their single largest asset. Unlike liquid financial assets, home equity is illiquid by nature — it cannot be spent directly without either selling the home or borrowing against it — but it can serve as an important source of capital for major financial objectives.

Home equity builds through three distinct mechanisms. The first is the initial down payment made at the time of purchase, which establishes an immediate equity stake. The second is the gradual paydown of the mortgage principal balance through regular monthly payments over time. The third — and often the largest — is property value appreciation. In markets that have experienced strong long-term appreciation, such as San Francisco, Seattle, or Boston, homeowners who purchased decades ago may find that appreciation alone has multiplied their equity many times over their original investment. Conversely, in periods of declining home values — most dramatically during the 2007-2011 housing crisis — equity can evaporate, and homeowners can find themselves in a position of negative equity (also called being underwater or upside-down), where the mortgage balance exceeds the home's current market value.

LTV ratio (Loan-to-Value) is the standard metric lenders use to express the relationship between the mortgage balance and the home's value. A homeowner with a $300,000 home and a $225,000 remaining mortgage balance has a 75% LTV and therefore 25% equity. Lenders use LTV as a key risk factor in evaluating mortgage applications, setting interest rates, and determining whether PMI is required. As LTV decreases through repayment and appreciation, borrowers gain access to more favorable refinancing terms and more flexible home equity borrowing options.

Tapping home equity in the United States can be accomplished through several mechanisms: a cash-out refinance (replacing the existing mortgage with a larger loan), a home equity loan (a second mortgage providing a lump sum at a fixed rate), or a Home Equity Line of Credit (HELOC). The Tax Cuts and Jobs Act of 2017 changed the deductibility rules for home equity debt, limiting the mortgage interest deduction to debt used to buy, build, or substantially improve the taxpayer's qualified residence, subject to the $750,000 total acquisition indebtedness cap. Interest on home equity loans or HELOCs used for non-improvement purposes — such as paying off consumer debt or funding a vacation — is no longer deductible under the current law.

For older Americans, a reverse mortgage is an additional mechanism for accessing home equity without monthly payments. Under a reverse mortgage — most commonly a Home Equity Conversion Mortgage (HECM) insured by the FHA — a homeowner aged 62 or older can borrow against their home equity and receive proceeds as a lump sum, monthly payments, or a line of credit. Repayment is not required until the homeowner sells the home, moves out, or passes away. HECMs are regulated by HUD and are subject to mandatory counseling by a HUD-approved counselor before origination.