- Harmonized Sales Tax (Single Sales Tax) Information Notice 1
- Harmonized Sales Tax (Single Sales Tax) Information Notice 2
- Harmonized Sales Tax Information Notice 3: General Transitional Rules for Ontario HST
- Harmonized Sales Tax Information Notice 4: Additional Information for Homebuyers and the Housing Industry under Ontario HST
- Memorandum of Agreement Concerning a Canada-Ontario Comprehensive Integrated Tax Co-ordination Agreement
- Proposed Harmonized Sales Tax (HST) Benefits for Ontario's Farmers
