In your calculation to determine if you are a small supplier, you have to include your worldwide revenues from your sales of goods and services that are taxed GST/HST (including zero-rated). You also have to include revenues of any of your associates. You have to exclude financial services, goodwill, and sales of capital property. The following three examples explain how to calculate the limit to determine if you are a small supplier.
Your public service body started making taxable supplies of goods and services in January 2008 and made the following sales throughout that year:
| First quarter (January to March) | $7,000 |
| Second quarter (April to June) | $15,000 |
| Third quarter (July to September) | $17,000 |
| Fourth quarter (October to December) | $10,000 |
| Total | $49,000 |
Because you did not exceed the $50,000 limit in the four consecutive calendar quarters, you are considered a small supplier throughout 2008, the first quarter of 2009, and the month of April 2009. At the end of every quarter, you have to make the same calculation to determine if you are still a small supplier.
This example shows what happens when you exceed the $50,000 limit at the end of four consecutive calendar quarters:
| First quarter (April 2008 to June 2008) | $7,000 |
| Second quarter (July 2008 to September 2008) | $15,000 |
| Third quarter (October 2008 to December 2008) | $17,000 |
| Fourth quarter (January 2008 to March 2008) | $13,000 |
| Total | $52,000 |
This example explains what happens if you exceed the $50,000 limit in one particular calendar quarter:
| First quarter (January to March) | $7,000 |
| Second quarter (April to June) | $15,000 |
| Third quarter (July to September) | $58,000 |
In this particular case, if you made the sale that exceeds the small supplier limit on September 23, you have until October 22 to register.