What do I do if I received a T4A on income that is already part of my business income? If I report the T4A doesn't that mean I get taxed twice?

[TurboTaxSusan]

When you enter a T4A into TurboTax it will create a new business with the T4A income on it. So you can either add your other self-employment income/expenses to that business, or just fill out the mandatory info on the T4A business, if you already have an existing business.