The CRA considers these to be self-employment or business income:
- T4 slip: box 81, 82 or 83
- T4A slip: box 20 or 48
- T4A slip: box 28 and you answered 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)
