In the Passing Lane: Exceeding The Small Supplier Threshold
I was asked the following question:
Hi, what if I initially thought that I would not be doing $30,000 worth of business and therefore, did not charge the HST. Then part way through the year, I get a surprise project that puts me over the $30,000 limit. Do I then just start charging the HST, or, would I need to re-invoice the other clients for the HST amount?
The answer is that you must register for GST/HST purposes when you take on the project that will cause you to exceed the small supplier threshold. After you are registered for GST/HST purposes, you must invoice GST/HST where applicable on invoices issued after that date. Unless you retroactively register for GST/HST purposes, you would not re-issue old invoices issued before the date of registration.
Cyndee Todgham Cherniak is counsel to and in affiliation with the International Trade Law and the Tax Law (Commodity Tax