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3.3.2 Calculate income and wealth

3.3.2 Calculate income and wealth

Wealth is assets minus what is owed

Definition

Disposable income: income left after direct taxes have been taken off and any state benefits added, which is what a household actually has available to spend or save.

  1. Wealth is worked out by adding up everything a household owns and then subtracting everything it owes.
  2. Assets include property, savings, pensions and shares, while debts include a mortgage, a loan and any credit card balance.
  3. The answer can be negative, because a household whose debts are larger than its assets has negative wealth.
Example
  • A household owns a home worth £280,000, has £12,000 in savings and a car worth £6,000, and owes £195,000 on its mortgage and £3,000 on a loan.

Step 1: add up the assets:

assets=£280,000+£12,000+£6,000=£298,000 \text{assets} = \pounds280{,}000 + \pounds12{,}000 + \pounds6{,}000 = \pounds298{,}000 assets=£280,000+£12,000+£6,000=£298,000

Step 2: add up the debts:

debts=£195,000+£3,000=£198,000 \text{debts} = \pounds195{,}000 + \pounds3{,}000 = \pounds198{,}000 debts=£195,000+£3,000=£198,000

Step 3: subtract the debts from the assets:

wealth=£298,000−£198,000=£100,000 \text{wealth} = \pounds298{,}000 - \pounds198{,}000 = \pounds100{,}000 wealth=£298,000−£198,000=£100,000
  • The household's wealth is £100,000, far less than the value of the property alone, because most of that value is still owed to the lender.

Income adds the sources together

  1. Total income is found by adding every source a household receives over the same period, which is normally a year.
  2. Keep the period the same across every source, because mixing a weekly wage with an annual pension gives a meaningless total.
  3. Convert first, so a weekly figure is multiplied by 52 and a monthly figure by 12.
  4. Take direct taxes off and add benefits on to reach the disposable figure, which is the one used for comparing living standards.
Example
  • A household receives a salary of £2,100 a month, a part-time wage of £150 a week and £480 a year in savings interest.

Step 1: put every source on an annual basis:

salary=£2,100×12=£25,200 \text{salary} = \pounds2{,}100 \times 12 = \pounds25{,}200 salary=£2,100×12=£25,200 part-time wage=£150×52=£7,800 \text{part-time wage} = \pounds150 \times 52 = \pounds7{,}800 part-time wage=£150×52=£7,800

Step 2: add the three annual figures together:

total income=£25,200+£7,800+£480=£33,480 \text{total income} = \pounds25{,}200 + \pounds7{,}800 + \pounds480 = \pounds33{,}480 total income=£25,200+£7,800+£480=£33,480
  • The household's income is £33,480 a year before any tax is taken off.

Quintile shares compare rich and poor

Definition

Quintile: one of five equal-sized groups a population is split into, ranked from poorest to richest.

  1. Ranking households and splitting them into fifths lets the share going to each fifth be compared directly.
  2. The quintile ratio divides the income of the richest fifth by that of the poorest fifth, so a larger answer means a wider gap.
  3. A ratio of 1 would mean the two fifths received the same, and the further above 1 the answer sits, the more unequal the distribution.
Example
  • In the financial year ending 2024 the UK quintile ratio was 5.6, so the richest fifth of households had 5.6 times the disposable income of the poorest fifth (Source: ONS).

Step 1: taking an illustrative £15,000 for the poorest fifth, multiply by the ratio to estimate the richest fifth:

richest fifth=5.6×£15,000=£84,000 \text{richest fifth} = 5.6 \times \pounds15{,}000 = \pounds84{,}000 richest fifth=5.6×£15,000=£84,000

Step 2: subtract to turn the ratio into a cash gap:

gap=£84,000−£15,000=£69,000 \text{gap} = \pounds84{,}000 - \pounds15{,}000 = \pounds69{,}000 gap=£84,000−£15,000=£69,000
  • The £15,000 is illustrative while the 5.6 is the published ratio, so the method shows how a ratio converts into a gap in pounds.

Say what the figure means

  1. Every answer needs a sentence saying what it tells you, because a number on its own is not an economic conclusion.
  2. A wealth figure says what a household would have left if it sold everything it owns and cleared everything it owes.
  3. A quintile ratio says how many times more the top fifth receives, which is a statement about the gap rather than about anyone's living standard.
Self review
  • How is a household's wealth calculated?
  • Why can wealth be a negative number?
  • A household earns £1,800 a month and £2,000 a year in interest. Calculate its annual income.
  • What does a quintile ratio of 5.6 tell you?
  • What is disposable income?
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Wealth is the value of everything a household owns minus the value of everything it owes. Assets can include property, savings, pensions and shares, while debts can include a mortgage, loan or credit card balance.

Income is money received over a period, normally one year. Income is a flow, while wealth is a stock measured at a particular point in time.

Wealth is calculated by subtracting total debts from total assets. Therefore,

wealth=total assets−total debts \text{wealth} = \text{total assets} - \text{total debts} wealth=total assets−total debts

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How is disposable income calculated from household income?

3.3.2 Calculate income and wealth Revision Guide

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  2. /Economics
  3. /3.3.2 Calculate income and wealth

Revision notes for OCR GCSE Economics 3.3.2 Calculate income and wealth: explanations and worked examples.

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