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Grade 8

10.10 Deductions and net pay


The total income for an individual over a weekly, bi-weekly or monthly pay period, is known as their gross pay. It could include any of the following forms of income:

  • A wage or salary from employment
  • Income support from a government allowance
  • Bonuses
  • Interest earned from financial institutions
  • Income from a rental property

Net pay or 'take-home' pay is the amount an employee actually receives in their bank account at the end of each pay period. It is calculated by subtracting tax and other deductions from their gross pay. 

$\text{Net pay }=\text{gross pay }-\text{tax }-\text{other deductions }$Net pay =gross pay tax other deductions

Each pay period, an employer must deduct tax instalments from their employee's pay, and send it to the Canada Revenue Agency (CRA). The employee may also arrange for their employer to make additional deductions from their pay, such as:

  • Voluntary cpp contributions
  • Union fees
  • Insurance premiums
  • Loan repayments
  • Salary-Sacrifice payments

Individuals who are self-employed, or work as contractors, must pay their own tax in regular instalments to the the CRA.


Worked example

Chris receives an annual salary of $\$78000$$78000 and is paid monthly. His employer deducts $22%$22% of his gross pay in tax. Chris has also arranged for his employer to make the following deductions:

  • Personal cpp contribution of $1.5%$1.5%
  • Union fees of $\$48$$48

Calculate Chris's net monthly pay.


First, we calculate Chris's gross monthly pay by dividing his salary by $12$12:

Monthly pay $=$= $\frac{78000}{12}$7800012
  $=$= $\$6500$$6500

Tax is calculated as $22%$22% of gross pay:

Tax $=$= $22%$22%$\text{of }$of $6500$6500
  $=$= $0.22\times6500$0.22×6500
  $=$= $\$1430$$1430

Chris's 'other deductions' include union fees of $\$48$$48 and a cpp amount that is $1.5%$1.5% of gross pay:

Other deductions $=$= $48$48 $+$+$1.5%$1.5% $\text{of }$of $6500$6500
  $=$= $48+\left(0.015\times6500\right)$48+(0.015×6500)
  $=$= $48+97.50$48+97.50
  $=$= $\$145.50$$145.50

We can now calculate Chris's net monthly pay:

Net pay $=$= $\text{gross pay }-\text{tax }-\text{other deductions }$gross pay tax other deductions
  $=$= $6500-1430-145.50$65001430145.50
  $=$= $\$4924.50$$4924.50


A note about the Canada Pension Plan (CPP)

The Canada Pension Plan is a way of saving for life after retirement from work. Contributions to cpp can be made in two ways:

  • In Canada, employers are required by law, to contribute $5.25%$5.25% of an employee's normal gross income towards a cpp fund. It is paid on top of an employee's earnings, so it is like additional income rather than a deduction.
  • Employees can also make voluntary contributions to their cpp, and arrange for their employer to deduct these additional contributions from their pay.

CPP is money that can normally only be accessed after a person has reached retirement age.


Practice questions

Question 1

Bill earns $\$843.50$$843.50 per week and has the following deductions from his gross wage: Tax $\$253.05$$253.05, cpp $\$85$$85 and union fees $\$25.61$$25.61.

  1. What is Bill’s net pay?

Question 2

Calculate the net weekly wage of a carpenter who must pay $16%$16% tax on an annual salary of $\$38080$$38080.

Give your answer correct to two decimal places.

Question 3

A labourer is paid a gross annual salary of $\$30300$$30300. Each week he contributes $4$4% of his gross pay to a voluntary cpp fund. His other weekly deductions are $\$159.50$$159.50 tax and $\$7.50$$7.50 for union fees.

  1. Calculate the total weekly deductions.

    Give your answer to the nearest cent.

  2. Calculate the net weekly income.

    Give your answer to the nearest cent.



Describe some advantages and disadvantages of various methods of payment that can be used when dealing with multiple currencies and exchange rates.

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