Nova Scotia, New Brunswick, and Newfoundland and Labrador have harmonized their provincial sales tax with the GST to create the harmonized sales tax (HST). Ontario and British Columbia (BC) are participating provinces, since July 1, 2010.
The changes described in the following Web pages apply to any supply made on or after May 1, 2010, and to any supply made after February 25, 2010 and before May 1, 2010 if the amount for the supply has not become payable, and has not been paid, before May 1, 2010.