Q. Do I claim a tuition credit, if I paid tuition last year, but wasn't a student?
A. Probably not. The tuition must be paid in the same year that the courses were taken. There is one exception: you may claim tuition paid in 2021 (on your 2021 tax return) for the first term of 2022. You may not claim tuition paid in arrears, except if it was in the same year. For example, you finished school in May 2021 but didn't pay until Sept 2021; that would count. Counter example: your finished school in Dec 2020, but didn't pay until January 2021, that would not count.