The Net Worth Formula
Net Worth = Total Assets − Total Liabilities
This is the same equation a company uses on its balance sheet (Equity = Assets − Liabilities). You are the company. Your net worth is your personal equity.
What Counts as an Asset
| Category | Examples | How to Value |
|---|---|---|
| Cash & savings | Checking, savings, money market, CDs | Account balance (exact) |
| Investments | Brokerage accounts, 401(k), IRA, stocks, bonds, ETFs | Current market value |
| Real estate | Primary home, rental properties | Estimated market value (Zillow, recent comps, or appraisal) |
| Vehicles | Cars, trucks, motorcycles | Kelley Blue Book or NADA private-party value, not dealer |
| Personal property | Jewelry, art, collectibles | Estimated resale value — what you could sell it for, not what you paid |
| Business interests | Business equity, partnership interests | Fair market value or book value |
Key rule: value each asset at what you could actually sell it for today, not what you paid and not what you hope it will be worth. A car you bought for $35,000 that is now worth $20,000 is a $20,000 asset. A stock you bought at $50 that trades at $30 is a $30 asset. Honest valuation is what makes the calculation useful.
What Counts as a Liability
| Category | Examples | Amount |
|---|---|---|
| Mortgage | Primary home, investment property loans | Outstanding balance, not the original loan amount |
| Student loans | Federal, private | Outstanding balance |
| Auto loans | Car financing, leases | Outstanding balance |
| Credit card debt | All cards | Current balance |
| Personal loans | Bank loans, family loans, 401(k) loans | Outstanding balance |
| Other debt | Medical bills, tax liens, margin loans | Outstanding balance |
List every debt at its current outstanding balance, not the original amount borrowed. The mortgage you took out at $240,000 may have a $195,000 balance today — the $195,000 is what counts. Pull the figures from your most recent statements so the numbers are exact.
A Worked Example
| Assets | Value | |
|---|---|---|
| Checking + savings | $8,000 | |
| 401(k) | $45,000 | |
| Roth IRA | $12,000 | |
| Brokerage (trading account) | $15,000 | |
| Home (market value) | $250,000 | |
| Car | $12,000 | |
| Total Assets | $342,000 | |
| Liabilities | Balance | |
| Mortgage | $195,000 | |
| Student loans | $22,000 | |
| Car loan | $8,000 | |
| Credit cards | $3,500 | |
| Total Liabilities | $228,500 | |
| Net Worth | $113,500 | |
This household has a positive net worth of $113,500. The home is the largest asset, the mortgage is the largest liability, and the trading account is a relatively small slice of the total — a typical pattern for a working-age family.
What the Number Tells You
- Positive and growing: you are building wealth. Assets are increasing faster than debts. Stay on the same plan.
- Positive but flat: earnings and spending are roughly matched. The savings rate needs to go up. Review your budget.
- Negative: debts exceed assets. Common for young adults with student loans and limited savings. With steady saving and debt payoff, most people cross into positive territory within 5 to 10 years of starting their career.
- Declining: a warning sign. Either debt is growing faster than assets or assets are losing value. Look into it right away. A trend like this rarely fixes itself.
Net Worth Benchmarks by Age
Rough guidelines for the median American household. These vary widely by income, region, and life choices.
| Age | Median Net Worth | Goal (active savers) |
|---|---|---|
| 25 | ~$10,000 | $25,000+ |
| 30 | ~$35,000 | $100,000+ (1–2x salary) |
| 35 | ~$55,000 | $200,000+ (2–3x salary) |
| 40 | ~$85,000 | $400,000+ (3–4x salary) |
| 50 | ~$170,000 | $800,000+ (6–8x salary) |
| 60 | ~$275,000 | $1,500,000+ (10–12x salary) |
The "goal" column reflects what is generally needed for a comfortable retirement and assumes consistent saving and investing. The medians sit far below those goals. Most American households are significantly under-saved for retirement, and the gap widens with age.
How Often to Calculate
Calculate your net worth quarterly — every three months. Monthly is too frequent; short-term market swings create noise that obscures the real trend. Annual is too infrequent; problems can build for many months before you notice them. A quarterly cadence smooths the line out and shows you whether your trajectory is up, flat, or down.
Build a simple spreadsheet with three columns: Date, Total Assets, Total Liabilities. Net worth calculates itself in the fourth column. (I've watched clients track this on the back of an envelope for twenty years — a spreadsheet works just as well, and the math is the same.) After a year you will have four data points. After five years, the chart tells your entire financial story on one page.
Net Worth and Trading
Your trading account is one component of your net worth, and usually a small one. A $20,000 trading account inside a $300,000 net worth represents about 7% of the total. That perspective changes how the wins and losses feel:
- A 50% loss in the trading account ($10,000) reduces net worth by 3.3%. Painful, survivable.
- A 100% gain in the trading account ($20,000 to $40,000) raises net worth by 6.7%. Welcome, but in the same period your retirement contributions and mortgage paydown may add as much or more to the total.
That is why personal finance fundamentals — the emergency fund, debt payoff, retirement saving, budgeting — matter more than trading skill for most people building wealth. Trading is the cherry on top. The fundamentals are the cake.
See also: Budgeting · What Is an Emergency Fund? · How to Read a Balance Sheet · Compound Interest · 401(k)
