From January to June I worked for ON employer, then I started a new job with a QC employer on June. Moved to QC on August 1st but my new employer kept deducting tax to ON assuming that I live there, despite informing them about my new address! I have received a T4 only showing ON as the employment province (employer address in QC). I knew about transferring 45% of the the deducted tax to revenue QC, but I'm still not sure how to deal with my tax filing this year. Any advices or help please?