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Contact us: Interest rates and tax rates

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Phone numbers

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Address

Minister of Finance Tax Office

33 King Street West, PO Box 627
Oshawa, Ontario
L1H 8H5

Visit a ServiceOntario location

ServiceOntario offers walk-in services to Ministry of Finance clients at certain ServiceOntario locations. These services include issuing receipts and accepting the following:

  • completed paper registration applications
  • applications for refunds
  • payments and other documents in sealed and unsealed envelopes
  • cash payments (12 locations only)

Visit a Ministry of Finance tax office

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-ONTTAXS (6688297).

Find a Ministry of Finance Tax Office near you.

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