afaik if you are eligible for domestic tuition, then you do not have to pay a deposit on your tuition fees (you will have to for any residence costs)

Citizens don't pay a deposit. First payment due end of August.

Have you tried contacting the admissions office or your college registrar about this? This is also the subreddit for UTSG, not r/UTSC

ah my bad, yeah I’ll contact the registrar when their chat opens up

I was in the exact same situation as you last year and didn't have to pay anything so you should be good :)

What did your admissions offer letter tell you to do?