If you've entered an amount from any of the boxes on the slips listed here, you have what the CRA says is self-employment or business income:
T4 slip: box 81, 82 or 83
T4A slip: box 20 or 48
T4A slip: box 28 and you selected Yes to the question Does the income declared in Box 028 consist of fees collected for services you provided? in TurboTax Online
T3 slip: box 24 (foreign business income)
If you entered an amount in any of these boxes, TurboTax will ask additional questions to report it as business income or to automatically add the info to Form T2125: Statement of Business Activities for you. You might be asked to enter your province of self-employment, business address, industry code, fiscal period, or to complete a self-employment statement.
If you don't have anything that Brenda listed above, then please contact our phone support team at 1-888-829-8608 as they will be better able to assist you.