Equity.
In plain English
Equity has two closely related meanings. In investing, equity is ownership in a company, which is what a share of stock represents; owning equity means you own a slice of the business and its future profits. In personal finance, equity is the part of an asset you actually own free of debt, such as your home's value minus the mortgage balance. Both meanings share the same core idea: equity is what would be left for you after everyone you owe is paid.
01Why it matters
Equity is how wealth actually builds, whether it is your growing ownership in the stock market or the rising share of your home that is truly yours.
02The math, step by step
Your home is worth 300,000 dollars and you owe 200,000 dollars on the mortgage. Your equity is 100,000 dollars, the part of the home's value that is yours rather than the lender's.
03What this is NOT
Equity is NOT the full value of an asset. It is only the portion you own after subtracting any debt against it, so a valuable home with a large mortgage can hold little equity.