Glossary -> Total Income, Net Income and Taxable Income
Personal income taxes are calculated on Taxable Income.
To calculate Taxable Income:
- first Total Income for Tax Purposes is calculated,
- then items are deducted to arrive at Net Income Before Adjustments,
- then items are deducted to arrive at Net Income for Tax Purposes,
- then other items are deducted to arrive at Taxable Income.
Total Income for Tax Purposes - Line 15000
Note: Before tax year 2019, line 15000 was line 150.
To calculate Total Income for Tax Purposes (line 150 on the tax return), add:
The total of the above is total income for tax purposes, line 15000 on the tax return.
Note: Before tax year 2019, line 23400 was line 234.
To calculate Net Income Before Adjustments (line 23400 on the tax return), deduct the following items from Total Income for Tax Purposes:
The above deductions result in net income before adjustments, line 23400 on the tax return. This amount is used to calculate clawback of OAS or employment insurance.
Note: Before tax year 2019, line 23600 was line 236.
Deduct line 23500 (line 235 prior to 2019), social benefits repayment re OAS pension (clawback), employment insurance, or net federal supplements.
The above deduction results in net income (for tax purposes), line 23600 on the tax return.
Note: Before tax year 2019, line 26000 was line 260.
To calculate Taxable Income (line 26000 on the tax return), deduct the following items from Net Income For Tax Purposes:
The taxable income is then used to calculate income tax, before deducting non-refundable tax credits and refundable tax credits.
Line 23600, Net Income For Tax Purposes, is used in calculating eligibility for income-tested benefits such as the GST/HST credit and Child Tax Benefit. It is used in the calculation of the medical expense tax credit, age amount, and other personal tax credits, and affects the ability of a spouse to claim a spousal tax credit for the taxpayer. Certain non-taxable items affect these benefits and tax credits, as they are included in Net Income, and deducted later on line 25000 (line 250 prior to 2019) so that they are not included in Taxable Income. Some of these non-taxable items are:
Capital and non-capital losses carried forward reduce Taxable Income, but not Net Income (line 23600), so are of no benefit when calculating eligibility for income-tested benefits. Although capital gains may be eliminated by capital losses carried forward, they may trigger a clawback of Old Age Security (OAS) benefits or a clawback of EI benefits, because the clawbacks are based on line 23400 of the tax return.
Several tax credits use the Net Income (line 23600) amount in their calculation, including low income tax credits, and the refundable medical expense supplement.
The tax rates which are used to calculate income taxes can be found in the tables of marginal tax rates.
See also non-taxable amounts for details of many items which are not required to be included in income.
Revised: October 23, 2021
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