Connecting with a tax office representative

Ministry of Finance Tax Office representatives are available by appointment only. If you need to meet with a ministry representative to discuss your tax issue(s), please call 1 866 ONT-TAXS (1 866 668-8297).

Contact us by phone

Toll free: 1-866-ONT TAXS (668 8297)
Teletypewriter (TTY): 1-800-263-7776

Contact us online

Consider completing your transaction online. Visit the following pages for more information:

Contact us in writing

Ministry of Finance
33 King Street West
PO Box 625
Oshawa ON L1H 8H9

Visiting a tax office in-person

You can visit the following locations by appointment only.

Tax returns, payments (no cash please) and other documents for the tax and benefit programs are accepted in person during business hours.

LocationAddressHours
(by appointment only)
Parking

Hamilton

Ministry of Finance
119 King Street West, 15th floor
Hamilton ON  L8P 4Y7

  • 8:30 a.m. to 5:00 p.m.
  • Services are not available on statutory holidays

Meter parking is available.

London

Ministry of Finance
130 Dufferin Avenue, Suite 400
London ON  N6A 6G8

  • 8:30 a.m. to 5:00 p.m.
  • Services are not available on statutory holidays

Meter parking is available.

OshawaMinistry of Finance
33 King Street West
Oshawa ON L1H 8H5
  • Monday to Friday, 8:30 a.m. to 5:00 p.m.
  • Services are not available on government or statutory holidays
  • Services for tax programs continue to be available online, in writing and by phone.
Meter parking is available.

Ottawa

Ministry of Finance
1400 Blair Place, Suite 300
Ottawa ON  K1J 9B8

  • 8:30 a.m. to 5:00 p.m.
  • Services are not available on statutory holidays

Meter parking is available.

Thunder Bay

Ministry of Finance
189 Red River Road
Thunder Bay ON  P7B 1A2

  • 8:30 a.m. to 5:00 p.m.
  • Services are not available on statutory holidays

Free and meter parking is available.

Toronto

Ministry of Finance
5 Park Home Avenue, Suite 200
Toronto (North York) ON  M2N 6W8

  • 8:30 a.m. to 5:00 p.m.
  • Services are not available on statutory holidays

Meter parking is available.

Windsor

Ministry of Finance
215 Eugenie Street West, Unit 101
Windsor ON  N8X 2X7

  • 8:30 a.m. to 5:00 p.m.
  • Services are not available on statutory holidays

Free parking is available.

Ontario Corporations Tax

The Tax Offices will accept Ontario Corporations Tax (CT) payments and returns for tax years ending before January 1, 2009 in the drop boxes provided. The ministry cannot accept any CT payments and returns for tax years ending after December 31, 2008. All payments and returns for harmonized years must be sent to the Canada Revenue Agency (CRA).

Other taxes

Please contact the CRA at 1 800 959-5525 or 1 800 665-0354 for teletypewriter (TTY) to make enquiries relating to Ontario corporate income tax, corporate minimum tax, capital tax, special additional tax on life insurers, personal income tax and Corporations Information Act Annual Return.

Visiting a ServiceOntario centre for tax-related services

Some ServiceOntario locations are not open or are operating at reduced hours. Before you go to a ServiceOntario location, ensure the location is open and offers the service you need.

The Ministry of Finance's in-person services are available at certain ServiceOntario locations. These locations accept returns and non-cash payments for several types of tax including retail sales tax, employer health tax, land transfer tax, provincial land tax, motor fuels, tobacco, beer, wine and spirits, and other provincial taxes on behalf of the ministry. Please check that your service is available on the location’s service page before visiting.

Note: 12 ServiceOntario locations accept cash payments.

ServiceOntario locations accepting cash payments

In addition, the 12 ServiceOntario locations listed below accept cash payments.

Hours of Service

Ontario Corporations Tax

ServiceOntario locations will accept Ontario Corporations Tax (CT) payments and returns for tax years ending before January 1, 2009. ServiceOntario cannot accept any CT payments and returns for tax years ending after December 31, 2008. All payments and returns for harmonized years must be sent to the Canada Revenue Agency (CRA). Please contact the CRA at 1 800 959-5525 or 1 800 665-0354 for teletypewriter (TTY).

Privacy

ServiceOntario staff, like Ministry of Finance staff, are prevented by law from disclosing confidential information, except in accordance with provisions of the tax statutes and the Freedom of Information and Protection of Privacy Act.