Net Worth Calculator
Income tells you what arrives. Net worth tells you what you have kept, which is the number that actually compounds.
What net worth measures
It is the only single figure that captures your whole financial position, and it is a far better progress measure than income. Two people earning the same can have net worths differing by hundreds of thousands, because income is a flow and net worth is the accumulated result of what you did with it.
Valuing things honestly matters. Property should be at realistic market value, not the optimistic figure; cars at trade-in value, not purchase price. Overstating assets produces a flattering number that tells you nothing useful.
Exclude things you would never sell and cannot value — furniture, clothes, personal effects. Including them adds noise and no information.
The ratios that matter more than the total
The headline figure is less informative than what sits underneath it:
- Liquid net worth. Net worth excluding property. Someone with £200,000 of home equity and £2,000 in the bank is asset-rich and dangerously illiquid — equity does not pay a boiler repair.
- Non-mortgage debt. Mortgage debt buys an appreciating asset at a low rate. Credit card debt at 23 % buys nothing and compounds against you. These should never be added together and treated as one thing.
- Net worth to income. A rough progress marker. A commonly cited benchmark is roughly one times annual income by 30, three times by 40 and six times by 50 — useful as a direction of travel rather than a verdict.
- Investment share. How much of your net worth is in assets that grow. Net worth concentrated entirely in one house and a car is not compounding.
Using it properly
Measure once a quarter, at the same point in the month, and record it. The value is entirely in the trend — a single snapshot tells you almost nothing.
What a rising net worth means in practice:
- Mortgage principal repayments move money from liability to equity, so ordinary payments increase net worth quietly each month.
- Market movements make investment values jump around. Do not read three months of noise as progress or failure.
- A negative net worth is normal and temporary for many people — student debt and a new mortgage both produce it. The trend matters, not the sign.
Do not compare with other people. Net worth depends heavily on age, country, housing market, inheritance and career stage. The only comparison that carries information is against your own figure a year ago.
Frequently asked questions
Should I include my pension?
Yes. It is a real asset you own, even though you cannot access it yet. Excluding it substantially understates the position of anyone who has been contributing for years, and pensions are often the largest asset after a house.
Is negative net worth bad?
Not necessarily. A recent graduate with student debt, or someone who has just bought a house with a small deposit, will often be negative and on an entirely healthy trajectory. It is a problem when it is driven by consumer debt and is not improving.
How often should I calculate it?
Quarterly is plenty. Monthly encourages reacting to market noise; annually is too infrequent to catch a problem developing. Keep a simple record so the trend is visible.
Should I include my car?
At realistic resale value, yes. Be aware it is a depreciating asset — including it at purchase price flatters the figure and disguises the fact that it is falling every year.