Net Worth Calculator
Calculate your net worth by subtracting total liabilities from total assets. Track your financial health with a clear breakdown.
Assets
Liabilities
What Net Worth Really Means
Net worth is the simplest snapshot of your financial health: everything you own minus everything you owe. It's one number that tells you whether you're building wealth or digging a hole. Your salary tells you how much flows in. Net worth tells you how much you've kept.
Think of it like a bathtub. Income is the tap. Spending is the drain. Net worth is the water level. Someone earning £100,000 who spends £110,000 has a falling water level. Someone earning £35,000 who saves £5,000 a year is quietly filling the tub.
Tracking net worth quarterly gives you something a budget never can: the big picture. Did that bonus actually move the needle? Is your mortgage shrinking faster than you thought? Are your investments growing or stagnating? One number, all answers.
Average Net Worth by Age in the UK
| Age Group | Median Net Worth | Top 10% | Key Drivers |
|---|---|---|---|
| 25-34 | £60,000 | £250,000+ | First property, student loans, early saving |
| 35-44 | £150,000 | £500,000+ | Property equity, pension growth, career peak |
| 45-54 | £280,000 | £800,000+ | Mortgage paydown, peak earning years |
| 55-64 | £380,000 | £1.2M+ | Pension pots maturing, inheritance, downsizing |
| 65+ | £320,000 | £1M+ | Drawdown phase, property wealth dominant |
What this means for you: These are ONS Wealth and Assets Survey median figures (including property and pensions). If you're below median for your age, don't panic — just start tracking. The gap closes faster than you think once you have a plan. Property ownership is the single biggest factor in UK net worth.
What Counts as an Asset (and What Doesn't)
| Include (Assets) | Include (Liabilities) | Don't Include |
|---|---|---|
| Cash and savings accounts | Mortgage balance | Income (it's a flow, not a stock) |
| ISAs and investment accounts | Car finance / HP | Household contents (too volatile) |
| Pension pot value | Student loan balance | Clothing and personal items |
| Property (estimated value) | Credit card debt | Future expected inheritance |
| Vehicles (realistic resale) | Personal loans | Future salary or bonuses |
| Crypto and collectibles | Buy Now Pay Later debts | Your skills or earning potential |
What this means for you: Be conservative with asset values — use what you'd actually get if you sold today, not what you paid or what you hope it's worth. For property, check recent sold prices on Rightmove for similar homes in your area. For cars, check Auto Trader.
Building Net Worth: What Actually Works
Pay down high-interest debt first
Credit cards at 20%+ APR destroy net worth faster than investments build it. Clear these before doing anything else. Every £1,000 cleared improves your net worth by £1,000 plus the saved interest.
Automate savings and investing
Set up standing orders on payday. Even £200/month into an ISA grows to £30,000+ over 10 years with market returns. The key is consistency, not amount.
Maximise employer pension match
If your employer matches 5%, contribute at least 5%. Not doing so is turning down a 100% return on your money. It's the closest thing to free money you'll find.
Track quarterly, not daily
Checking too often creates anxiety when markets dip. Quarterly reviews let you see the trend without the noise. Record your numbers in a spreadsheet or note — the pattern over 5-10 years is what matters.
The 50/30/20 Rule for Building Net Worth
One of the simplest frameworks for growing your net worth is the 50/30/20 rule: 50% of your after-tax income goes to needs (rent, bills, groceries), 30% to wants (dining out, subscriptions, holidays), and 20% to savings and debt repayment. That 20% is what actually moves the needle on your net worth.
On a £30,000 take-home salary, 20% is £6,000 a year — or £500 a month. Invested in a global index fund averaging 7% annual returns, that's roughly £86,000 after 10 years. The same amount sitting in a 0% current account would be just £60,000. The gap gets wider every decade.
The rule isn't rigid — if you're paying off high-interest debt, push that 20% higher. If you live in London where rent eats 40%+ of income, the 50% needs bracket might stretch. The point is to have a target. Without one, lifestyle inflation quietly absorbs every pay rise and your net worth flatlines.
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Common uses
- Tracking your overall financial health over time
- Understanding the balance between your assets and debts
- Setting financial goals with a clear baseline
- Comparing your progress to UK averages by age
- Planning for retirement by seeing your total wealth picture
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