Ontario HST Calculator
Add or remove 13% HST for Ontario invoices, purchases, and totals.
Know your total before you send the invoice.
Use Lunio's calculator to double-check GST/HST, PST & QST on new invoices or project estimates.
Calculate tax totals in seconds.
Using current Ontario rates automatically.
Results
See totals update instantly.
About Ontario HST
This Ontario HST calculator allows you to quickly add or remove tax from any amount. Whether you're calculating totals for invoices or determining pre-tax pricing, Lunio makes it fast and accurate.
How HST works in Ontario
Ontario currently applies HST for a combined rate of 13%. Use this page to add tax to an amount or estimate tax-inclusive totals instantly.
Ontario quick examples
Current components: HST (13% total).
Stay accurate and client-ready.
Lunio automates tax rates for invoices so every total stays compliant, accurate, and professional.
Already have a final total? Use the reverse tax calculator to calculate subtotal before tax and remove GST/HST from a total.
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Remove tax from final totals quickly.
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Create tax-ready invoices in minutes.
Start managing your invoices and taxes with Lunio
Create invoices, track taxes, and stay organized — all in one place.
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