General tax enquiries, (re-) assessments, amended returns, loss carry-back requests MINISTRY OF FINANCE TAX COMPLIANCE AND REGIONAL OPERATIONS BRANCH DESK AUDIT SECTION 33 KING ST W PO BOX 622 OSHAWA ON L1H 8H6
Hours of Service Monday to Friday 8:30am to 5:00pm (EST)
Pickering : 905-420-9363 Toll-Free (English) : 1-866-805-7702 Fax : 905-837-3800 |