If you have your own business, you can enter it as Self-Employment/business income. Use the “Find” tool to search for “self”. Select “Self-Employment” and then click the “Go” button. You can also enter any expenses you had to incur to earn this income.
If you don’t have your own business, click “Find” and search for “tips”, then select it from the list and click on the “Go” button. On the “Other Employment Income Sources” page, fill in the top line, “Tips, gratuities or occasional earning not reported on a tax slip from the payer”, then click the “Continue” button to save your changes.