What evidence do I need to declare tutoring income on the Canadian federal income tax form?
I am doing tutoring with students and want to declare it.
Can I make copies of the checks I receive?
I have been a private tutor on and off for about 30 years, in three countries, so I understand your concerns!
I always kept records as though it was a real business - even if I only had one student I kept records of dates/times/names, and also tracked where the money went (I never spent it straight up - it always got deposited to complete the paper trail; yes, this is paranoia on my part).
I've never been asked to prove anything with regards this income (although I have no Canadian experience). It's always been a case of tell the tax folks and make sure my arse is covered if they come asking questions. Hope this helps.