# Net worth meaning and how to calculate it (UK)

> Researched and written by Shiv Patel, chartered accountant (ICAS), with AI drafting assistance. Every figure is checked against the cited source. Guidance, not personal advice.
> Published: 2026-11-10 · Last reviewed: 2026-11-10 · Tax year: 2026/27
> Canonical: https://www.surplusapp.co.uk/guides/net-worth-meaning/

Net worth is the value of everything you own minus everything you owe, measured on one day. Assets include cash, savings, investments, pensions, property and possessions; liabilities include mortgages, loans, credit cards and student loans. It is a balance sheet, not income, and a positive figure does not mean that amount is available to spend.

This guide sets out what counts on each side, works through a calculation for one fictional homeowner, shows why the figure moves around payday and explains why net worth and spendable cash are different numbers.

## What does net worth mean?

An accountant would call net worth a balance sheet: a list of assets and liabilities at a single date, with the difference at the bottom. For a company that difference is called equity. For a person it is net worth, and in official statistics it is usually called wealth.

The important word is "date". Net worth is a snapshot. It does not measure how much comes in each month, which is income, or how much is left after bills, which is [disposable income](/guides/what-is-disposable-income/). Pay rises lift income straight away but only lift net worth once some of that pay is kept, as savings, pension contributions or a smaller debt.

## What counts towards net worth?

The Office for National Statistics measures wealth in four components [https://www.ons.gov.uk/peoplepopulationandcommunity/personalandhouseholdfinances/incomeandwealth/bulletins/totalwealthingreatbritain/april2020tomarch2022, 2021/22]:

- **Net property wealth:** the value of all properties minus mortgage debt.
- **Net financial wealth:** the value of savings and investments minus financial liabilities. Those liabilities include bank loans, credit cards and student loans from the Student Loans Company [https://www.ons.gov.uk/peoplepopulationandcommunity/personalandhouseholdfinances/incomeandwealth/methodologies/measuringwealthonanindividuallevel, 2018/19].
- **Physical wealth:** the value of vehicles, collectables and household contents.
- **Private pension wealth:** the value of occupational and personal pensions already built up.

Add the four together and you have total wealth, which is net worth in the ONS's terms.

For scale, median household wealth in Great Britain was £293,700 in the period April 2020 to March 2022 [https://www.ons.gov.uk/peoplepopulationandcommunity/personalandhouseholdfinances/incomeandwealth/bulletins/totalwealthingreatbritain/april2020tomarch2022, 2021/22]. Net property wealth made up 40% of household wealth, private pension wealth 35%, net financial wealth 14% and physical wealth 10% [https://www.ons.gov.uk/peoplepopulationandcommunity/personalandhouseholdfinances/incomeandwealth/bulletins/totalwealthingreatbritain/april2020tomarch2022, 2021/22]. Housing tenure makes a large difference: median household wealth was £647,400 for households who owned outright, £404,700 for those with a mortgage and £40,800 for renters [https://www.ons.gov.uk/peoplepopulationandcommunity/personalandhouseholdfinances/incomeandwealth/bulletins/totalwealthingreatbritain/april2020tomarch2022, 2021/22].

These figures come with caveats the ONS states itself. They are household figures, not individual ones. The survey ran by telephone during the pandemic, and the ONS has suspended the accreditation of the Wealth and Assets Survey from this round onwards while it works on quality [https://www.ons.gov.uk/peoplepopulationandcommunity/personalandhouseholdfinances/incomeandwealth/bulletins/totalwealthingreatbritain/april2020tomarch2022, 2021/22]. They show the shape of wealth in Great Britain more reliably than a precise benchmark.

## How do I calculate net worth?

Four steps, all valued on the same day:

1. **List every asset with a current value.** Current and savings accounts, ISAs and other investments, pension pots, the home and any other property and a car or anything else that could be sold.
2. **List every debt with the balance outstanding.** The mortgage, credit cards, overdrafts, personal and car loans, buy now pay later balances and the student loan.
3. **Use today's value, not the price paid.** A car is worth what it would sell for now, not what it cost. Pension statements give a pot value; a house price is only ever an estimate.
4. **Subtract total debts from total assets.**

A net worth calculator runs the same sum. The answer depends on which boxes it offers and how honest the values typed into them are.

### A worked example

One fictional homeowner who owns a flat jointly with a partner. The figures are illustrative, not typical or average amounts. Half the flat and half the mortgage are counted as this person's share.

| Illustrative balance sheet | Amount |
| --- | --- |
| Half share of the flat (worth £280,000) | £140,000 |
| Workplace pension pot | £38,000 |
| Stocks and shares ISA | £9,500 |
| Easy-access savings | £4,000 |
| Current account | £1,800 |
| Car | £6,000 |
| Half share of household contents | £2,500 |
| **Total assets** | **£201,800** |
| Half share of the mortgage (£210,000) | -£105,000 |
| Student loan | -£18,000 |
| Car finance | -£4,500 |
| Credit card | -£1,200 |
| **Total liabilities** | **-£128,700** |
| **Net worth** | **£73,100** |

Grouped into the ONS components, the same £73,100 looks very different:

| Component | Amount |
| --- | --- |
| Net property wealth (£140,000 - £105,000) | £35,000 |
| Private pension wealth | £38,000 |
| Physical wealth (£6,000 + £2,500) | £8,500 |
| Net financial wealth (£15,300 of savings, investments and cash - £23,700 of loans and card debt) | -£8,400 |
| **Total** | **£73,100** |

Net worth is £73,100, yet net financial wealth is negative. The cash in the current account and easy-access savings, less the credit card, comes to £4,600. Almost everything else is tied up in a home, a pension and a car.

## Why does net worth change with the day you check it?

Because net worth is a snapshot, the same person can get two different figures a few days apart without anything real having changed. For most employees the biggest swing is payday.

When pay arrives, the current account rises by the net pay received and net worth rises with it. Over the following month, rent or the mortgage, bills and everyday spending take the cash back down. Repaying debt reduces what you owe, so the part of a payment that clears a loan, card or mortgage balance keeps its value in net worth. The money that is spent leaves it.

### An example around payday

An illustration in round numbers, not ONS data. Someone is paid £2,400 after tax on the 28th of each month. Over the month they spend £2,100 and use £200 to pay down a loan.

| Day checked | Current account | Net worth |
| --- | --- | --- |
| The 27th, the day before payday | £300 | £20,000 |
| The 28th, payday | £2,700 | £22,400 |
| The 27th of the next month | £400 | £20,300 |

Comparing the day before payday with payday itself, net worth jumped £2,400 overnight. Comparing the same point a month apart, it rose £300: £100 more cash kept and £200 less debt. The £300 is the real change; the £2,400 is the timing of the salary.

Paying off a credit card bill works differently from spending. Cash falls and the card balance falls by the same amount, so net worth does not move. The spending that ran up the balance had already reduced it.

The practical rule is to compare like with like. Take each month's figure at the same point in the pay cycle, such as just after payday, and look at the trend over several months rather than one reading.

## Why isn't net worth the same as cash?

Because most of what makes up net worth cannot be spent this month without selling something or waiting years.

- **Pensions.** When money can be taken from a personal or workplace pension depends on the scheme's rules, but it is usually after age 55 [https://www.gov.uk/early-retirement-pension/personal-and-workplace-pensions, 2026/27]. A pension pot counts in full towards net worth decades before any of it can be used.
- **Property.** Equity in a home becomes cash only by selling, remortgaging or borrowing against it, and selling means paying to live somewhere else.
- **Physical wealth.** Cars and contents lose value and are rarely sold to raise money.

The ONS publishes figures that show the gap. Median household wealth was £293,700, but median household financial wealth, savings and investments less financial debts, was £10,400 [https://www.ons.gov.uk/peoplepopulationandcommunity/personalandhouseholdfinances/incomeandwealth/bulletins/totalwealthingreatbritain/april2020tomarch2022, 2021/22]. With pensions left out, median household wealth was £181,700 [https://www.ons.gov.uk/peoplepopulationandcommunity/personalandhouseholdfinances/incomeandwealth/bulletins/totalwealthingreatbritain/april2020tomarch2022, 2021/22].

So net worth answers "how much would be left if everything were sold and every debt repaid?" It does not answer "what can I spend before payday?", which depends on the cash in the account and the bills due before the next pay arrives. That is the question [what's safe to spend before payday](/guides/whats-safe-to-spend-before-payday/) works through.

## Is net worth per person or per household?

Either, and mixing the two is a frequent source of a confusing answer. A household figure adds up everything the people in a home own and owe. A personal figure needs a rule for what is shared.

The ONS uses a simple one when it measures wealth for individuals. The value of the main home and the mortgage on it are split equally between the person responsible for the home and their spouse or partner, and household goods, contents and vehicles are divided equally between all the adults living there [https://www.ons.gov.uk/peoplepopulationandcommunity/personalandhouseholdfinances/incomeandwealth/methodologies/measuringwealthonanindividuallevel, 2018/19]. Savings, debts and pensions stay with whoever holds them.

A real ownership split may not be equal, and a joint account or joint loan is shared too. Whatever rule is chosen, the important thing is that assets and debts follow the same one. Counting the whole house but only half the mortgage overstates net worth; the reverse understates it.

## How do people normally work this out?

**A definition and a spreadsheet.** Most people start from a dictionary line, "assets minus liabilities", and build a sheet from whatever categories come to mind. It works, and it is easy to leave out the pension, the student loan or the car finance, or to put the whole house in one person's column and the mortgage in another's.

**An online net worth calculator.** Quick, and only as good as its boxes. Many of the pages that rank for the term are written for the US market, so the boxes may not match UK pensions, ISAs or student loans. The values typed in are estimates and nothing updates afterwards.

**The banking app.** It shows balances at that bank precisely, but not a pension held elsewhere, a mortgage with another lender or the value of a home.

**The quick estimate.** "House value minus mortgage" is often used as shorthand for net worth. It leaves out pensions, savings and every other debt.

All four share the same weakness: the figures come from different places on different dates, so the total is only as current as its oldest number.

## How you'd do this in Surplus

Surplus builds net worth from the accounts it can read or that you add. Current accounts and credit cards connect through read-only Open Banking provided by Yapily, so balances come from the bank rather than being typed in, and Surplus can't move your money. A Trading 212 investment account can be connected alongside them. Savings or investments held somewhere Surplus can't see can be added as virtual buckets and kept up to date by hand. Debts sit on the same screen, including any added manually.

Net worth is those assets minus those debts, with cash shown apart from investments, so the gap between net worth and spendable money stays in view.

Surplus Pro tracks your net worth over time. You can tie its snapshots to a chosen income, so Surplus records your position when it detects that payment arriving, or choose a regular schedule instead. Tied to pay, each month's figure is taken at a similar point in the pay cycle, which is the comparison the payday section above recommends. The chart separates cash, investments and debt, with your current position shown alongside saved snapshots.

*Figure: the Surplus net worth History chart, redrawn with illustrative figures. Twelve monthly payday snapshots show cash and investments with debt deducted; net worth rises from £14,400 in December to £23,950 in November, up £850 on October.*

Every figure above is cited to its source where it appears and re-verified against that source whenever it changes.

## Sources
- Household total wealth in Great Britain: April 2020 to March 2022 - Office for National Statistics — https://www.ons.gov.uk/peoplepopulationandcommunity/personalandhouseholdfinances/incomeandwealth/bulletins/totalwealthingreatbritain/april2020tomarch2022 (accessed 2026-11-09)
- Measuring wealth on an individual level - Office for National Statistics — https://www.ons.gov.uk/peoplepopulationandcommunity/personalandhouseholdfinances/incomeandwealth/methodologies/measuringwealthonanindividuallevel (accessed 2026-11-09)
- Early retirement, your pension and benefits: personal and workplace pensions - GOV.UK — https://www.gov.uk/early-retirement-pension/personal-and-workplace-pensions (accessed 2026-11-09)