Where do i claim tax paid for buying a used car? i am self employed and would like to use it as an expense.

Did you purchase it for the purpose of the business or for personal use?

i bought it for personal i guess. I'm self employed and not registered as a company. i keep track of my kilometers for work and report other car expenses proportionally.i know if i was registered i would claim it on my gst/qst return. seems ashame to not be able to use it somewhere. thx.

You can still claim it  because you are using it for self employment purposes and this is how: