What Is Net Worth and How Do You Calculate It?

What Is Net Worth?

Net worth is the difference between what you own and what you owe. The formula is: Net worth = Total assets − Total liabilities. If your assets exceed your liabilities, your net worth is positive. If your debts exceed your assets, it is negative — sometimes called being "underwater" at the personal level.

Net worth is not an income measure or a cash flow measure. You can earn a high income and have a low net worth if you spend aggressively and carry significant debt. You can earn a modest income and build a substantial net worth by spending less than you earn and consistently investing the difference. The number reflects accumulated behavior over time, not a single year's earnings.

How to Calculate Your Net Worth

Add up all your assets: cash, checking accounts, savings accounts, brokerage accounts, retirement accounts (401k, IRA, Roth IRA), the current market value of any real estate you own, the current value of your vehicles, and other significant valuables. Then add up all your liabilities: mortgage balance, car loans, student loans, credit card balances, personal loans, and any other outstanding debt.

Subtract your total liabilities from your total assets. The result is your net worth.

Example: Assets of $25,000 in savings + $80,000 in retirement accounts + $320,000 home value + $15,000 car = $440,000. Liabilities of $210,000 mortgage + $8,000 car loan + $5,000 student loans = $223,000. Net worth: $440,000 − $223,000 = $217,000.

Use current market values for assets, not what you paid. A house purchased for $280,000 that is now worth $320,000 contributes $320,000 to your asset total — but remember to subtract the outstanding mortgage, which may be $210,000, leaving $110,000 in actual equity.

What Counts as an Asset?

Assets are anything you own that has monetary value and could theoretically be converted to cash.

• Cash and bank balances (checking, savings, money market accounts)
• Investment accounts (brokerage, retirement accounts such as 401k and IRA, HSA)
• Real estate at current market value — not the original purchase price
• Vehicles at current resale value
• Business ownership (the fair market value of your ownership stake)
• Life insurance cash value (the surrender value, not the death benefit)
• Personal property of significant value (jewelry, art, collectibles)

What Counts as a Liability?

Liabilities are any amounts you legally owe to another party.

• Mortgage principal balance (the current payoff amount, not the original loan)
• Home equity loans and HELOCs
• Car loans
• Student loans (federal and private)
• Credit card balances
• Personal loans
• Medical debt
• Any other outstanding legal obligation to repay money

Median Net Worth by Age in the United States

Net worth naturally grows with age as people pay down debt, accumulate savings, and build home equity. According to the Federal Reserve's Survey of Consumer Finances (2022), median net worth by age group breaks down as follows:

• Under 35: median $39,000
• 35–44: median $135,000
• 45–54: median $247,000
• 55–64: median $364,000
• 65–74: median $410,000
• 75 and older: median $334,000

Why Net Worth Matters More Than Income

Income is a flow — money moving through your life. Net worth is a stock — the accumulation that remains after everything flows through. A doctor earning $350,000 who spends $340,000 and carries $500,000 in student loans may have a lower net worth than a teacher earning $55,000 who has invested consistently and carried no debt for 25 years.

Net worth is also the number that determines financial independence. If your investments generate enough passive income to cover your living expenses, you are financially independent regardless of your current salary. Most frameworks for retirement readiness — including the FIRE (Financial Independence, Retire Early) movement — center on net worth targets, not income targets.

The conventional retirement benchmark from *The Millionaire Next Door* and most financial planners is that by your age times your annual pre-tax income, divided by ten, you should have accumulated at least that amount as net worth to be considered on track. At 40 earning $80,000, the benchmark is $320,000. At 50, it would be $400,000. This is a rough guideline, not a law — but it anchors the relationship between age, income, and accumulated wealth.

How to Increase Your Net Worth

Every dollar added to net worth comes from either growing an asset or reducing a liability. There are four basic levers.

Spend less than you earn. This is the single most powerful lever. The difference between your income and expenses is what funds savings and debt repayment, both of which grow net worth. Even a modest savings rate of 10–15% of income, sustained over decades, produces substantial wealth through compounding.

Invest consistently. Money sitting in a savings account at 4–5% grows slowly. Money invested in diversified assets — index funds, real estate — grows at historical rates of 7–10% annually over long periods. The difference between 4% and 8% annual growth over 30 years is enormous: $10,000 growing at 4% becomes $32,000; at 8%, it becomes $100,000.

Pay down high-interest debt first. Credit card interest at 20–25% is a guaranteed negative return on your net worth. Eliminating a 24% APR credit card balance is the equivalent of earning 24% risk-free — no investment reliably beats that. Once high-interest debt is cleared, redirect those payments into savings.

Increase income. Raises, promotions, additional skills, or side income all increase the amount available to save and invest. The combination of lower spending and higher income — growing the gap between the two — is the most direct route to accelerating net worth growth.

Common Mistakes That Suppress Net Worth

Counting home value without subtracting the mortgage. Some people list their home's market value as an asset but forget to list the mortgage as a liability. This inflates net worth significantly. Only home equity — value minus mortgage balance — is your actual net worth contribution from real estate.

Ignoring retirement accounts. Many people mentally exclude their 401k because they cannot access it without penalty before age 59½. But it is real wealth that compounds every year. Include it in your net worth calculation — it is money that belongs to you.

Confusing gross income with actual savings capacity. A $100,000 salary might net $70,000 after taxes. After housing, food, transportation, and other fixed expenses, only a fraction is available to build net worth. Understanding your actual savings rate — not your gross income — is where the real financial picture lives.

Not tracking it consistently. Net worth is a trailing indicator. You will not see major changes month to month. But reviewing it annually reveals the direction of your financial trajectory. A consistently rising number — even from a low starting point — is one of the clearest signals that your decisions are compounding in your favor.

Summary

Net worth is the most honest single-number summary of your financial life. It does not care what you earn, what neighborhood you live in, or what car you drive. It measures what is actually left after everything is accounted for. Calculate yours honestly — including every liability — and revisit it once a year. The direction of the trend matters more than the absolute number, especially early on. A net worth growing by $10,000 a year at age 28 is a far better financial story than a high income with no savings at 38.