Key Takeaways
- Equity is a residual value: Assets minus liabilities is the core accounting relationship.
- Home equity changes with value and debt: Paying down a mortgage can build equity, but falling property prices can reduce it.
- Stocks are equity securities: A share represents an ownership position in a corporation.
- Ownership value is not the same as cash: Ownership value may be illiquid, volatile, or costly to access.
How Equity Is Calculated
The formula applies broadly, but the inputs depend on context. Households may compare a home’s market value with mortgages secured by it, while companies use accounting values for assets and liabilities on the balance sheet.
Negative equity occurs when liabilities exceed asset value. Homeowners who owe more than their properties are worth are commonly described as being underwater.
Home Equity
Home equity is the current value of a property minus the amount of existing mortgage debt. Equity can rise when the mortgage balance falls or the home appreciates, and it can decline when property value drops or additional secured borrowing increases.
Homeowners can sometimes borrow against equity through a home equity loan or home equity line of credit. Because the home serves as collateral, failure to repay can put the property at risk of foreclosure.
Loan-to-value provides a related perspective by comparing debt with property value.
Higher equity generally means lower LTV, but lenders may use specific valuation methods and may limit how much equity can be borrowed against.
Business Equity
On a balance sheet, shareholders’ equity equals assets minus liabilities. It can include contributed capital, retained earnings, and other accounting components depending on the entity and reporting framework.
Book equity is not automatically the market value of a company. Public-company market capitalization reflects the market price of outstanding shares, while balance-sheet equity is based on accounting measurements.
Private businesses may use valuation methods based on cash flow, comparable transactions, or other assumptions. A founder’s ownership percentage also does not directly reveal what the stake could be sold for.
Equity as an Investment
Stock represents an ownership position, or equity, in a corporation. Shareholders can benefit if the company grows and the share price rises, and some companies distribute dividends.
Ownership also carries risk. Stock prices can fall, dividends are not guaranteed, and common shareholders generally stand behind creditors if a company is liquidated.
Borrowing to buy equity investments adds leverage. That can magnify gains but also losses, especially when margin requirements force an investor to add cash or sell securities.
Equity vs. Assets and Net Worth
An asset is something with economic value; equity is the portion of that value remaining after associated liabilities. The two terms therefore describe different sides of ownership.
Net worth applies the same broad idea to a person or household by subtracting total liabilities from total assets. Home equity can be one component of net worth rather than a substitute for the entire calculation.
When Equity Matters
Borrowers may care about home equity when refinancing, removing mortgage insurance where applicable, selling, or considering secured borrowing. Business owners track equity to understand the residual claim of owners and changes in the company’s financial position.
Investors use the term in a different way when allocating money to stocks or equity funds. Context is therefore essential whenever a financial document uses the word “equity.”
Frequently Asked Questions (FAQs)
Is equity the same as profit?
No. Profit is an income-statement measure for a period. Equity is a balance-sheet value at a point in time and can change because of profit, losses, owner contributions, distributions, and other items.
Can home equity be negative?
It can. Negative equity occurs when mortgage or other secured debt exceeds the home’s current value.
Does owning stock mean you have equity?
Stock ownership creates equity in a corporation, so shares are commonly called equity securities.