What is net worth and why it matters more than your income
Published 21 April 2026
Two people earn $80,000 a year. One is financially secure. One is quietly in trouble. Income is the same. Net worth explains the difference.
Net worth is the single most useful number for understanding your overall financial position. It's simple to calculate: everything you own (assets) minus everything you owe (liabilities). The result can be positive, negative, or zero — and all of those are valid starting points.
Why income is an incomplete picture
Income tells you how much money flows into your life. It says nothing about how much stays. A high-income earner with a large mortgage, car loans, credit card debt, and no savings can be in a more precarious financial position than someone earning half as much with no debt and a growing savings account.
Net worth captures the accumulation of all your financial decisions over time, not just the current period. It's the scoreboard, not the play-by-play.
What counts as an asset?
- Bank account balances (savings and everyday accounts)
- KiwiSaver and investment accounts
- Property you own (estimated market value)
- Vehicles (at current resale value, not purchase price)
- Other valuable possessions you could sell
What counts as a liability?
- Mortgage balance remaining
- Credit card debt
- Personal loans
- Student loan (for overseas residents — NZ residents have interest-free loans)
- Car finance
- BNPL balances
- Any money you owe to others
How to use your net worth
Calculate it now, then recalculate every 3–6 months. You're looking for the direction of change, not perfection. If your net worth is growing, you're accumulating wealth — regardless of what the number is today. If it's shrinking, something in the balance of income, spending, and debt needs to change.
A negative net worth is nothing to be ashamed of — it's extremely common for people under 35, particularly those with mortgages early in the loan. The important question is whether the trend is improving.
Next: put it into practice
Step-by-step guides to do what this article describes.
Common questions
Related concepts
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