GST/HST

How do I backdate my GST/HST registration?
Fax (In ON 1-519-645-4029) (In AB 1-306-652-3211) (In BC 1-604-586-6442) to CRA the following letter along with 3 invoices showing GST/HST collected: AT...
Fri, Apr 12, 2019 at 12:52 PM
How do I verify a GST/HST Registration?
Go to: https://www.canada.ca/en/revenue-agency/services/e-services/e-services-businesses/confirming-a-gst-hst-account-number.html 
Tue, Mar 26, 2019 at 10:53 AM
Sales Tax Rates by Province - 2020
Wed, Jun 3, 2020 at 12:14 PM