Net Worth Calculator: What It Is, How to Calculate It and How to Grow It
Blog › Finance · 8 min read · Published 2026-05-07
Assets vs liabilities, average net worth by age, what a 'good' net worth looks like, and proven strategies to grow it.
What Is Net Worth?
Net worth is the simplest single number that measures your financial health: everything you own minus everything you owe. Unlike income, which says how fast money flows in, net worth measures how much of it actually stays with you. A $200,000 earner with $250,000 in debt has a worse balance sheet than a $60,000 earner who has saved $100,000.
Assets vs Liabilities
Assets (what you own)
- Cash and checking/savings accounts
- Investment accounts (brokerage, retirement, HSA)
- Real estate (primary residence + any rental property), at conservative market value
- Vehicles, at realistic resale value (use Kelley Blue Book, not what you paid)
- Business equity
- Cash value of permanent life insurance, if any
Skip personal items (clothes, electronics) unless they have meaningful resale value.
Liabilities (what you owe)
- Mortgage balance
- Student loans
- Auto loans
- Credit card balances
- Personal loans, medical debt, family loans
- Tax debt
Calculate It — The Formula
Net Worth = Total Assets − Total Liabilities
Use the Net Worth Calculator to add everything up. Recalculate quarterly. Trends matter much more than single snapshots.
Average Net Worth by Age (US Federal Reserve)
- Under 35: Median ≈ $39,000 · Average ≈ $183,500
- 35–44: Median ≈ $135,600 · Average ≈ $549,600
- 45–54: Median ≈ $247,200 · Average ≈ $975,800
- 55–64: Median ≈ $364,500 · Average ≈ $1,566,900
- 65–74: Median ≈ $410,000 · Average ≈ $1,794,600
- 75+: Median ≈ $334,700 · Average ≈ $1,624,100
Note that medians are far below averages — averages are skewed up by ultra-high-net-worth households. Aim to compare against medians, not averages.
What "Good" Net Worth Looks Like
A widely cited benchmark from The Millionaire Next Door: target net worth = (age × pre-tax income) / 10. A 40-year-old earning $80,000 should aim for $320,000 net worth. The book labels people who exceed this "Prodigious Accumulators of Wealth" and those who fall short "Under-Accumulators of Wealth".
Another benchmark: by age 30 you should have 1× annual salary saved; by 40, 3×; by 50, 6×; by 60, 8×; by 67, 10×.
Strategies to Grow Net Worth
1. Maximise the gap between income and spending
The fundamental driver of net worth growth is the surplus between what you earn and what you spend, invested consistently. People who hit financial independence early invariably save 25–60% of their income.
2. Eliminate high-interest debt
Credit card APRs of 20%+ are unbeatable in reverse. Paying off a credit card is a guaranteed 20% return, taxed nowhere. Always prioritise it over investing extra cash.
3. Invest the surplus
Compounding builds the curve. The Investment Growth Calculator shows how a $500/month contribution at 7% becomes $611,000 over 30 years.
4. Maximise tax-advantaged accounts
401(k), IRA, HSA — every dollar you contribute reduces taxable income today and grows tax-deferred. Capture employer match first; that's an instant 50–100% return.
5. Buy assets, not liabilities disguised as assets
A house you live in is a hybrid — primary residence builds equity, but it also generates property tax, maintenance, and insurance costs. A car worth $30,000 today is a liability that depreciates 50% in 5 years.
6. Increase income deliberately
Cutting expenses has a floor. Income has no ceiling. Career investment — skills, networking, side income — is one of the highest-leverage moves for net worth growth in the first 20 years of your career.
Tracking and Mindset
Update net worth quarterly. Watch the trajectory, not single-quarter dips. Use net worth to plan retirement (combine with the Retirement Calculator) rather than as a scoreboard. The goal is freedom, not the number itself.