GST/HST Threshold Predictor for Ontario

Track your $30,000 revenue threshold and find out exactly when CRA requires you to register for HST in Ontario.

Ontario uses HST at 13%, combining federal GST and provincial tax into a single CRA remittance. With the largest concentration of sole proprietors in Canada, Ontario freelancers and resellers are among the most likely to cross the $30,000 threshold. Once you exceed $30,000 in any four consecutive quarters, you have 29 days to register with CRA.

Ontario at a glance

Sales tax: HST at 13%
Federal GST portion: 5%
Registration threshold: $30,000 in taxable revenue
Deadline to register: 29 days after you cross it
Who you file with: Canada Revenue Agency (one HST return)

$30k Threshold Predictor

When will you need to register for GST/HST?

Based on CRA Small Supplier rules. Consult a tax professional for official advice.

Ontario GST/HST registration FAQ

What sales tax do I charge in Ontario once I register?

Ontario applies HST at 13%. Because Ontario is an HST province, you register once and file a single combined return through the Canada Revenue Agency (CRA). There is no separate provincial sales tax account to manage.

Does the $30,000 GST/HST threshold work differently in Ontario?

No. The $30,000 small supplier threshold is a federal rule and applies in Ontario the same way it does across Canada. Once your taxable revenue passes $30,000 in a single calendar quarter, or across any four consecutive quarters, you must register within 29 days. What changes by province is the rate you charge, which is 13% in Ontario.

Related guides and tools

This tool answers when you must register. Once you are registered, the Ontario GST/HST calculator works out what rate to charge on each invoice.

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