How to Calculate Net Worth Correctly: Assets Minus Liabilities Done Right

Net worth is a simple formula. The disputes arise in what to include, what values to use, and how to interpret the number.

A 40-year-old with $500,000 in home equity, $200,000 in a 401k, and $80,000 in checking is not equally wealthy to a 40-year-old with $780,000 in a taxable brokerage and no home. Both have the same net worth on paper. The actual financial position is quite different.

The Formula

Net Worth = Total Assets - Total Liabilities

That is it. Everything else is detail about what goes in each category and how to value items.

What Counts as an Asset

| Asset Type | What to Include | Value to Use | |-----------|----------------|-------------| | Checking accounts | All checking balances | Current balance | | Savings accounts | All savings accounts | Current balance | | Taxable brokerage | Investment accounts | Current market value | | 401k / 403b / 457 | All balances | Current balance (pre-tax, but include full value) | | Traditional IRA | All balances | Current balance | | Roth IRA | All balances | Current balance | | HSA | Investment balance | Current balance | | Primary residence | Fair market value | Zillow/Redfin estimate or recent comps | | Investment properties | Fair market value | Recent comparable sales | | Vehicles | Current market value | Kelly Blue Book private party value | | Business ownership | Estimated fair value | Difficult — use conservative estimate | | Cash value life insurance | Surrender value | Stated surrender value | | Personal property (jewelry, art) | Liquidation value | What you could sell it for today |

What Counts as a Liability

| Liability Type | Include | |---------------|---------| | Mortgage balance | Remaining principal | | Home equity loan / HELOC | Outstanding balance | | Car loans | Remaining balance | | Student loans | Total balance | | Credit card balances | Current balance | | Personal loans | Outstanding balance | | Medical debt | Outstanding balance | | Tax liability | Estimated taxes owed not yet paid | | Business loans | If personally guaranteed |

The Tax Adjustment for Retirement Accounts

Your 401k shows $300,000. You cannot spend $300,000. When you withdraw, you will pay ordinary income tax on every dollar.

Some financial planners adjust for this:

Method 1 (Simple): Include the full $300,000 without tax adjustment. The tax liability is deferred and uncertain (rates may change). Most personal finance tracking uses this method.

Method 2 (Adjusted): Multiply by (1 - expected tax rate). At 22% marginal rate: $300,000 × 0.78 = $234,000. This gives a more conservative "spendable net worth" figure.

For consistent year-over-year tracking, use Method 1. For retirement planning purposes, Model 2 gives a more honest picture of accessible funds.

Roth IRA is different: no taxes on qualified withdrawals. The full $100,000 Roth balance is truly $100,000 in purchasing power.

Tracking Net Worth Monthly

A simple spreadsheet updated monthly:

Assets:

• Liquid accounts (checking + savings + money market): sum of all
• Investments: taxable brokerage current value
• Retirement: 401k + IRA + HSA current value
• Real estate: home value estimate (update quarterly)
• Other: vehicles (update annually), business value (update annually)

Liabilities:

• Mortgage balance (from last statement)
• Other loans (each balance)
• Credit cards (current balance)

Net worth = Assets total - Liabilities total

Update once per month. Track the trend. The absolute number matters less than the direction and rate of change.

How to Interpret Your Net Worth

Negative net worth: Common for recent graduates with student loans or young buyers with mortgages exceeding home equity. Not necessarily a problem if trajectory is positive (increasing with each month's review).

Net worth equal to income: Typical for someone in their late 20s or early 30s on track financially. $75,000 income, $75,000 net worth.

Net worth = 1-2x income: Solid trajectory. Growing retirement accounts, some equity building.

Net worth = 10x income: Financial independence approaching. A person earning $80,000 with $800,000 in net worth is near the FIRE threshold at moderate spending levels.

The "financial independence" threshold varies by individual, but $500,000-$2,000,000 in investable net worth (excluding primary residence) covers most scenarios.

Primary Residence: Include or Exclude?

Include it in total net worth: Accurate picture of total balance sheet.

Track investable net worth separately: Many FIRE planners track only liquid and investable assets (brokerage + retirement + savings) to measure financial independence progress. Home equity requires selling to access, so it does not generate retirement income directly.

Two parallel numbers:

• Total net worth: $850,000 (including $300,000 home equity)
• Investable net worth: $550,000 (excludes home, funds FIRE calculation)

Comparing to Benchmarks

Average net worth by age (US, 2026):

| Age | Mean Net Worth | Median Net Worth | |-----|---------------|-----------------| | Under 35 | $183,000 | $39,000 | | 35-44 | $549,000 | $135,000 | | 45-54 | $975,000 | $247,000 | | 55-64 | $1,566,000 | $408,000 | | 65-74 | $1,794,000 | $610,000 |

Mean is skewed by the ultra-wealthy. Median is a more meaningful comparison. If your net worth exceeds the median for your age group, you are in the top half.

The FIRE community targets are more ambitious. Someone pursuing FIRE at 35 needs $1,000,000-$2,000,000 in investable assets, well above the median $135,000.

Frequently Asked Questions

Should I include my pension in net worth?

If you have a defined benefit pension, you can estimate its "present value" (what a lump sum equivalent would be) using the annual benefit divided by a discount rate. A $24,000/year pension at 5% discount = $480,000 equivalent. Include this as a retirement asset.

Does my car value actually matter for net worth tracking?

Marginally. Cars depreciate quickly. A $30,000 car becomes $22,000 in year 1, $16,000 in year 2. Including it adds complexity without much insight into your financial health. Some people exclude vehicles, including only investment-quality assets. Either is fine for personal tracking.

How accurate does my home value estimate need to be?

Within 5-10% is fine. Use Zillow's Zestimate, Redfin's estimate, or recent comparable sales. Update quarterly. For the purpose of net worth tracking, a reasonable estimate is sufficient. Only when selling does an accurate appraisal matter.