Corporations Tax

The Canada Revenue Agency is now administering Ontario's corporations tax, capital tax, corporate minimum tax, and the special additional tax on life insurers. All telephone enquiries should be directed to the CRA at 1 800 959-5525 or 1 800 665-0354 for teletypewriter (TTY). More

• Account Information and Address Changes
• Payments and Interest
• Single Administration of Corporations Tax
• Tax Liability and Components of Corporations Tax
• Tax Returns