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When day-trading profits do qualify as capital gains, the resulting amount is reported annually with your income tax return. When declaring capital gains from any disposition of capital properties, you report these earnings using Schedule 3, which also covers other income sources that may not apply to you
Schedule 3 totals all income sources eligible for capital gains and losses, and then takes half this amount for entry on line 12700 of your federal tax return.
For more information please check:
How to Calculate Capital Gains When Day Trading in Canada
Claiming Capital Gains and Losses
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