Do I Need to Register for HST?

This free decision tool is for Ontario small business owners, freelancers, and consultants who aren't sure whether they need to register for the Harmonized Sales Tax (HST). Answer five short questions about your revenue, customers, and what you sell, and get a plain-language answer plus your next step.

HST is a 13% federal-provincial sales tax that most Ontario businesses charge on taxable supplies. The Canada Revenue Agency requires you to register once your worldwide taxable revenue crosses $30,000 in any four consecutive calendar quarters — and you have 29 days from crossing that threshold to register. Missing that window can mean back-owing HST you never collected, plus interest and penalties. Some businesses under $30,000 also benefit from voluntary registration, because it lets them claim input tax credits on HST they pay on business purchases.

Registration only answers the first question. If you'd like help with filing frequency, quick-method vs. regular method, or catching up on late returns, see bookkeeping & compliance services or book a free call.