Changes to the Harmonized Sales Tax (HST). Some provinces have combined their provincial sales tax with the goods and services tax (GST) to create a harmonized sales tax (HST). Complete list of GST/HST rates for every province.<br /><br />On April 1, 2013, British Columbia (BC) and Prince Edward Island (PEI) will change the way their sales taxes are administered.<br /><br />On April 1, 2013, Easter Monday, the CRA’s Business Enquiries telephone service will be open between 8:30 a.m. to 4:30 p.m. local time in the Pacific and Atlantic time zones to assist businesses and self-employed individuals in Prince Edward Island and British Columbia with their GST/HST-related questions. Call toll-free at 1-800-959-5525. For new or revised GST/HST publications, go to Forms and publications. http://www.cra-arc.gc.ca/formspubs/menu-eng.html