How to calculate your net worth: a UK guide with ONS benchmarks

A single number can tell you more about your finances than your payslip: your net worth. It combines both sides of the equation, what you own and what you owe. This guide walks you step by step through how to calculate it, how to value each item honestly, and how to compare yourself with a typical household in Great Britain, using the Office for National Statistics (ONS) as the benchmark.

TL;DR

• Net worth = everything you own (assets) minus everything you owe (liabilities). Add up the current market value of your home, car, money in accounts, investments and pension pots, then subtract the outstanding balance on your mortgage and other borrowing. The result is a single number that says more about your financial position than your salary does.
• In Great Britain, property and pensions make up three quarters of household wealth. According to the ONS Wealth and Assets Survey, median household wealth was £293,700 in April 2020 to March 2022: 40% of the total was net property wealth and 35% private pension wealth.
• What matters is honest valuation and consistency. Use current market prices (not what you paid), the outstanding balance for loans (not the amount you originally borrowed, nor the monthly payment), and recalculate every 3 to 12 months so you can see the trend.

Key findings

1. The definition is simple and the same everywhere. Net worth = total assets − total liabilities. Investopedia, the ONS and the European Central Bank all use it, which is why the figure can be compared, with care, across countries.
2. Net worth is a snapshot, income is a flow. Income measures money coming in over a period; net worth measures where you stand on a given day.
3. British household wealth is concentrated in homes and pensions. Net financial wealth (savings and investments minus debts) is only 14% of the total, and physical wealth such as vehicles and household contents 10%.
4. The most common mistakes: using the purchase price instead of today’s value, forgetting small debts, and counting the original loan instead of what is still owed.
5. Every item can be valued with free tools: HM Land Registry sold prices and the UK House Price Index for property, comparable listings for a car, and your online banking, pension provider and lender for the rest.

Details

1. What net worth is and how to calculate it

Net worth is the difference between what you own and what you owe. Investopedia defines it like this: “Net worth is the difference between assets and liabilities and provides a snapshot of an entity’s current financial position.” The ONS measures household wealth in the same way: the value of property, financial assets, physical assets and private pensions, minus mortgages and other debts.

If your assets exceed your liabilities, your net worth is positive; if you owe more than you own, it is negative. Investopedia: “Positive net worth means that assets exceed liabilities while negative net worth describes the opposite scenario.”

What is an asset and what is a liability? An asset is anything you own that has monetary value and could be sold for cash. A liability is any debt, that is, an obligation to pay someone else.

2. What household wealth looks like in Great Britain

The ONS measures household wealth through the Wealth and Assets Survey, which was based on 15,100 households in its latest round. The most recent results, published in January 2025, cover April 2020 to March 2022. The ONS counts four components: net property wealth, net financial wealth, physical wealth (vehicles, collectables and household contents) and private pension wealth (workplace and personal pensions already built up). The State Pension is not included.

Median household wealth (the household in the middle):

	Median household wealth
All households in Great Britain	£293,700
Excluding private pension wealth	£181,700
Owned outright	£647,400
Owned with a mortgage	£404,700
Renting	£40,800
Head of household aged 16 to 24	£15,200
Head of household aged 65 to 74 (the peak)	£502,500
South East (highest region)	£489,800
North East (lowest region)	£179,900

Source: ONS, Household total wealth in Great Britain: April 2020 to March 2022.

A few things are worth knowing before you compare yourself with these figures:

• Wealth is very unevenly spread. The wealthiest 10% of households had £1,200,500 or more, the least wealthy 10% had £16,500 or less, and the wealthiest 1% alone held 10% of all household wealth, as much as the least wealthy half of households combined. That is why you should compare yourself with the median, not with an average that a few very wealthy households pull upwards.
• Age and housing explain most of the gap. A household headed by someone aged 65 to 74 has usually had decades to pay off a mortgage and build up a pension. Compare yourself with households at a similar stage, not with the national figure.
• Nominal and real are different things. After a methodology update, the ONS put median wealth for April 2018 to March 2020 at £282,200, or £292,200 in today’s prices. Against £293,700 in the latest round, typical household wealth was roughly flat once inflation is taken into account. Read more about real versus nominal returns.

How Great Britain compares with Germany and France. Both countries run their surveys under the ECB’s Household Finance and Consumption Survey (HFCS), which leaves out state and workplace pension rights. The closest British figure is therefore the median without pension wealth.

The figures are in different currencies, for different years and from surveys with slightly different methods, so treat the table as a rough orientation, not a league table. What the countries share is the structure: the home is the largest single asset. In Germany the main residence accounts for 42 to 50% of gross wealth, and in Great Britain net property wealth is 40% of the total even after mortgages.

3. Debt: what counts and what does not

For net worth, only one number matters for each loan: the outstanding balance, that is, what you still owe today, not what you originally borrowed.

• Mortgages are the largest debt by amount, but they only affect households that own property. In the ONS figures they are already subtracted from net property wealth.
• Consumer credit is far more widespread but much smaller. In the FCA’s Financial Lives 2024 survey, 84% of UK adults held at least one credit or loan product (many of them a credit card paid off in full each month), 21% had been overdrawn at some point in the previous 12 months, and 5% had persistent credit card debt, paying more in interest and charges than they paid off.
• National figures are irrelevant to your own calculation. What matters is your balance, which you will find on your statement or in your lender’s app.

Do not mix sources. Survey data (a sample of households) and lending statistics (all loans in the economy) measure different things and cannot be compared directly.

4. How to value individual assets (in practice)

Honest valuation is half the battle. The overview below shows where to find the current market value of each item, and what to watch out for.

For property, always use today’s market value, not the purchase price. The most reliable free starting point is what similar homes nearby actually sold for: HM Land Registry publishes the price paid for registered sales in England and Wales since 1995, with a free search tool, and the UK House Price Index shows how prices have moved in your local authority. Scotland and Northern Ireland keep separate registers that are not part of this data. If you need a figure that will stand up to scrutiny, a professional property valuation gives you one. How to keep the value of a home up to date over the years, and why a single listing says little, is covered in How property value grows over time.

For pensions, count the current value of each workplace and personal pension pot. The ONS includes these pensions in household wealth, but not the State Pension: check your State Pension forecast on GOV.UK and keep it as a separate note rather than adding it to your net worth. Bear in mind that a pension is not money you can spend today, and that part of it will usually be taxed as income when you take it.

For household items, electronics and jewellery, count only significant items (valuable jewellery, collectibles). Everyday appliances and furniture lose value quickly and are not worth the effort of valuing. The ONS does count household contents in physical wealth, so your own figure will tend to come out a little lower than the survey’s.

5. How to determine your liabilities (the outstanding balance)

The key principle: count the amount still owed, not the original loan or the monthly payment.

• Mortgage: you will find the current balance in your lender’s app or online banking, or on your annual mortgage statement. If you want the exact figure needed to clear the mortgage on a given date, ask your lender for a redemption statement. Bear in mind that it may also include interest up to that date and any early repayment charges, so it can be higher than the plain balance.
• Personal loans, credit cards, overdraft, car finance, store cards, buy now pay later and money owed to family: add up the current balances.
• If you are not sure you have a full picture of your debts, request your statutory credit report. You have the right to a free copy from each of the three main credit reference agencies: Equifax, Experian and TransUnion.

6. Calculate your net worth right now

Enter your figures into the calculator below. Everything is calculated in your browser and nothing is sent anywhere. The pre-filled numbers are only an illustration, so replace them with your own.

Want a breakdown by category and a record of how your net worth changes over time? Read about how net worth tracking in Assetli works.

7. Practical advice on how often to track, and why

• How often: while you are actively building wealth, a quarterly overview is enough; otherwise once a year is fine. Schwab MoneyWise recommends: “calculate your net worth now and recalculate it once or twice a year.” A practical compromise is to update accounts monthly and property and car once or twice a year. Bear in mind that property has very low liquidity and its value only becomes cash once you actually sell.
• Why net worth matters more than income: a high income does not guarantee a high net worth if you also spend a lot. Net worth is the most complete picture of your financial situation because it combines both sides, what you own and what you owe.
• Net worth calculators: online calculators usually offer fields for assets (cash, accounts, investments, pension, property, car) and liabilities (mortgage, loans, credit cards) and work out the difference. The principle is always the same: assets − liabilities.
• Age benchmarks: popular rules of thumb such as “net worth = annual salary × age ÷ 10” from the book The Millionaire Next Door are American. For British households, the ONS figures are a better guide: median wealth rises from £15,200 for households headed by someone aged 16 to 24 to £502,500 at 65 to 74.

Recommendations

1. Build your first overview today. Create a simple table with four columns: date, total assets, total liabilities, net worth. Fill in current market values; the first number is your starting line.
2. Value honestly and at market. Property from sold prices nearby (HM Land Registry, UK House Price Index), a car from comparable listings, accounts, pensions and loans from your providers. For loans, always the outstanding balance, not the original amount.
3. Don’t forget anything. Go through every account, ISA, pension pot and debt, including credit cards, overdraft, car finance and buy now pay later. Small debts without a monthly statement are the ones most often overlooked.
4. Repeat regularly. Update once a quarter or at least once a year, and add each record as a new row instead of overwriting the old one. The trend, whether your net worth is growing, matters more than the absolute number.
5. Take benchmarks with a pinch of salt. Comparing yourself with the British median (£293,700, or £181,700 without pensions) gives you a rough orientation, but your figures depend on your age, region and whether you own or rent.

When to change your approach:

If you want to see how regular investing grows through compound interest, or you are working down a negative net worth, the debt payoff calculator helps you plan which debt to clear first.

Caveats

• Household wealth data come from a sample survey and tend to under-represent the wealthiest households, so real inequality is probably greater than the official figures show. The ONS has also suspended the accreditation of the Wealth and Assets Survey from the 2020 to 2022 round while it improves quality.
• The latest ONS round is several years old. It covers April 2020 to March 2022, a period that includes the pandemic. House prices and savings have moved since then, so use it as a rough benchmark rather than a current measurement.
• Property and car prices change, so any valuation is valid only for a given day. Different sources use different methods and arrive at slightly different figures; for your net worth, choose a cautious estimate.
• Recent house price figures are provisional. HM Land Registry revises the latest months of the UK House Price Index as more sales are registered.
• International comparisons are approximate. The British, German and French surveys differ in currency, year and how they treat pensions.

Sources and references

Definition and methodology:

1. Investopedia. Net Worth. investopedia.com
2. Wikipedia. Net worth. en.wikipedia.org

Household wealth in Great Britain:

1. Office for National Statistics. Household total wealth in Great Britain: April 2020 to March 2022 (released 24 January 2025): median £293,700, £181,700 excluding pensions, composition, tenure, age and regional medians, top and bottom 10%, accreditation status. ons.gov.uk

European comparison:

1. European Central Bank. Household Finance and Consumption Survey (HFCS), the common framework behind the German and French surveys. ecb.europa.eu
2. Deutsche Bundesbank. Household wealth and finances in Germany: results of the 2023 survey. bundesbank.de
3. Insee. Les montants de patrimoine détenus par les ménages en 2024. insee.fr

Debt:

1. Financial Conduct Authority. Financial Lives 2024 survey: key findings (fieldwork February to June 2024, 17,950 respondents). fca.org.uk
2. Information Commissioner’s Office. Credit: your right to a free copy of your credit file from Equifax, Experian and TransUnion. ico.org.uk
3. NatWest. Mortgage redemption statement: what it includes and how long it is valid (an example from one lender). natwest.com

Property valuation:

1. HM Land Registry. About the Price Paid Data: sales in England and Wales since 1995. gov.uk
2. HM Land Registry. Search house price data. gov.uk
3. HM Land Registry. UK House Price Index data downloads, July 2026. gov.uk

Pensions and savings:

1. GOV.UK. Check your State Pension forecast. gov.uk
2. GOV.UK. Find pension contact details (Pension Tracing Service). gov.uk
3. GOV.UK. Tax on your private pension contributions and withdrawals. gov.uk
4. GOV.UK. Individual Savings Accounts (ISAs). gov.uk

Frequency and best practice:

1. Schwab MoneyWise. Your Personal Net Worth. schwabmoneywise.com
2. U.S. News. How to Calculate Your Net Worth. money.usnews.com
3. FinancialAha. Net Worth Tracking Mistakes. financialaha.com

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Disclaimer: This article is for educational purposes only and does not constitute investment, pension or tax advice. The data presented is based on public sources from the ONS, the FCA, HM Land Registry, the Bundesbank, Insee and other institutions and may change over time.