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GST/HST Registration for Small Businesses

2026-02-15

By Canada GST/HST Calculator Editorial Team

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When to Register for GST/HST

In Canada, small businesses are often exempt from collecting and remitting GST/HST until they reach a certain revenue threshold.

The $30,000 Rule

The most important rule is the $30,000 small supplier threshold. You stay a small supplier only while both conditions are true:

  1. Your taxable revenues are not more than $30,000 in any single calendar quarter.
  2. Your taxable revenues are not more than $30,000 over the last four consecutive calendar quarters.

Why Register Voluntarily?

Even if you earn less than $30,000, you might want to register because:

  1. Input Tax Credits (ITCs): You can recover the GST/HST you pay on business expenses.
  2. Professionalism: It can make your business look more established.

How to Register

Use CRA Business Registration Online to create or add your GST/HST account. Phone-based registration for GST/HST accounts is no longer available.

Run the Canada GST/HST calculator for province-based totals →

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