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If you've entered an amount from any of the boxes on the slips listed here, you have what the CRA considers to be self-employment or business income:
If you have an amount in any of these boxes, TurboTax will ask additional questions to report the income as self-employment/business income. You only need to answer basic information, such as business name and address (can be your own), industry code, and fiscal period (Jan 01 to December 31).
Please see this TurboTax Canada FAQ for more information on who can use Free: Who can file for free using TurboTax?

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