You may call the Ministry Information Centre toll-free at 1 800 263-7965 from any location within Canada or the United States. Users from outside Canada or the United States may call 905 433-6000. Information officers are available to help you, in English and French, from 8:15 a.m. to 5:00 p.m. (Eastern Standard Time), Monday to Friday. Note: Ministry of Finance tax offices and services are closed on statutory holidays.

• General Inquiry: 1 800 263-7965
• TTY/Teletypewriter: 1 800 263-7776 (Ontario only)

Program-specific inquiries

• Corporations Tax
• Debt Retirement Charge: 1 866 728-8804
• International Fuel Tax Agreement: 1 800 263-7775
• Ontario Child Care Supplement for Working Families: 1 877 533-2188
• Retail Sales Tax - Refund Unit: 1 800 615-2757
• Retail Sales Tax - Tax Advisory: 1 888 285-7815

Use our online telephone directory to find names, phone numbers, addresses, and e-mail addresses.