How to Invoice in Ontario
Sales tax rate, registration threshold, and CRA rules for invoicing in Ontario — plus a worked example.
By InvoiceFlow Canada Team · Updated
Quick answer
Ontario charges HST (Harmonized Sales Tax) at a flat 13% — 5% federal GST plus an 8% provincial portion, combined into one line. Register for a GST/HST number once your revenue crosses $30,000 over four consecutive calendar quarters; below that, you're a CRA "small supplier" and don't charge HST.
Sales tax rate in Ontario
HST 13%
HST applies as one combined rate to almost all goods and services in Ontario — there's no separate GST/PST split to track.
Worked example
A $1,000.00 invoice to a customer in Ontario:
- Subtotal
- $1,000.00
- HST 13%
- Tax total
- $130.00
- Total due
- $1,130.00
When you must register
You must register for a GST/HST number once your total self-employed revenue crosses $30,000over four consecutive calendar quarters — below that, you're a CRA "small supplier" and aren't required to charge tax at all. This threshold is federal and applies the same way in every province.
Try it on your next invoice
Free, no signup — set the customer's province to Ontario and let tax calculate automatically.
Create your invoice