Select the code that most closely represents your work. The page will then refresh with a new set of codes
Continue selecting codes to narrow down your specific area of expertise until you reach a page containing six-digit codes
Choose the code that most closely represents your work, and use that as your industry code
Note:If you have income from self-employment or if you own a small business, you'll also need to enter a six-digit industry code into your tax return (the CRA’s NETFILE service will reject your tax return if you use an incorrect or outdated code). Some sectors, sub-sectors, industry groups, and industry categories include an item that belongs with “Other.” You can choose that code if you're unable to find a code that's directly relevant to your scenario