❓ Question: When must I register for GST/HST as a small business or supplier? ✅ Answer: You must register when your total revenues exceed $30,000  in a single calendar quarter or over four consecutive quarters. You need to charge GST/HST starting from the sale that pushes you over the limit . Avoid penalties by registering for GST/HST If you're running a small business or freelancing in Canada, you may not need to collect GST/HST right away. The Canada Revenue Agency (CRA) cl