How to Calculate Net Worth: The Balance Sheet That Matters

Add up everything you own. Subtract everything you owe. The result is net worth, and it is the only financial number a large salary cannot fake.

Income is a flow; net worth is the accumulated result. Two households can earn the same $150,000 and sit a decade apart in net worth because of what they kept. The net worth calculator does the addition; this guide covers what belongs on each side.

The formula

Net worth = assets - liabilities.

Assets are what you own at market value. Liabilities are what you owe. The number can be negative early in life, when student loans and a first car routinely put new graduates below zero, and negative is information, not identity.

The example household balance sheet

A worked example, computed and illustrative:

(computed example)

Every line is a judgment call, and the call matters more than the precision:

• Retirement accounts count. A 401(k), IRA, and pension value are assets. The tax you will pay later is real, but the standard convention counts the pre-tax balance.
• Home equity counts at market value. The house is an asset at what it would sell for today, with the mortgage subtracted. Updating the value yearly is enough; monthly appraisals are noise.
• Vehicles count at depreciated value. The $35,000 truck bought last year is worth less than the loan balance for the first few years. That is a normal part of the early balance sheet.

What does not count

Future income, expected inheritances, and the monthly budget are not assets. A raise is not net worth until it becomes a balance. Household goods count only if you would sell them, and most people would not sell the couch to fund retirement. The discipline of the formula is that it only counts what exists today, at a price someone would actually pay.

The payoff that does not move the number

Paying off the $6,000 credit card with $6,000 of cash leaves net worth unchanged: cash falls, debt falls, the difference is the same. The balance sheet is indifferent, but the interest stops, and that is the real win. Net worth measures position; cash flow and interest rates measure progress.

Why the number moves slowly

Net worth changes through three channels: contributions, market returns, and spending. Of the three, spending is the one people control and the one most people underestimate. A household saving 20% of income accumulates about twice as fast as a household saving 10% on the same income and returns (computed example). The number feels glacial in the first years and accelerates later, because the same channels compound: contributions add to a balance that also grows.

The pension question

A defined-benefit pension is an asset, but its value is a judgment call: a lump-sum estimate from the plan, or the income stream discounted at a reasonable rate. The convention that matters is consistency, not precision. Count it the same way every year, and note the assumption in the spreadsheet so the trend stays comparable.

What to do with the number

The point of calculating net worth is the next decision, not the number itself. If net worth is negative, the priority is debt reduction and the first cash reserve. If it is positive, the question is whether the growth rate matches the plan, which the retirement runway guide turns into years of spending. Set the target, then let the yearly calculation show progress toward it.

Median net worth by age

The Federal Reserve's Survey of Consumer Finances (2022) reports these medians, meaning half of households in each age band are above and half below:

(survey medians)

Two things to notice. The medians climb through the working years because contributions, home equity, and compounding build on each other. And the median is a reference point, not a report card: households at the 75th percentile hold multiples of these numbers, and high-income households can still sit below the median for their age if the money never accumulated.

Net worth vs income

The take-home pay guide shows what a paycheck really delivers; net worth shows what the paychecks left behind. A raise changes the flow. Net worth changes only when the flow becomes assets, or when assets become spending.

The mortgage question

The mortgage is usually the largest liability on the sheet, and paying it down moves money from the cash column to the home-equity column without changing net worth. The mortgage payoff guide works through when that trade is worth making, since rate, tax treatment, and liquidity all matter. Net worth is indifferent; your cash flow is not.

How often to calculate

Quarterly or yearly is enough. The number should move with deliberate changes, such as contributions, payoffs, and purchases, rather than market noise. Track it the same way each time: same accounts, same valuation convention, same date. The net worth calculator makes the cadence painless.

Bottom line

Net worth is one subtraction, done honestly, repeated yearly. It is the scoreboard that income cannot fake, and it is the number the retirement runway guide uses to estimate how long savings last. The investing calculators cover the rest of the scoreboard.