Ontario Tax Calculator (2026) — Add or Reverse Tax
Ontario's combined sales tax is 13.00% (HST). Calculate income tax, or add/reverse Ontario sales tax on any price, below.
Enter your income to see your Ontario take-home pay.
Understanding Ontario Taxes
Ontario charges a single harmonized rate of 13.00% on most goods and services.
Ontario harmonized its provincial sales tax with the federal GST into a single 13% HST in 2010, one of the largest tax-system changes in the province's history.
On the income tax side, Ontario's provincial brackets start at 5.05% and rise to 13.16% for the top bracket, layered on top of the federal brackets (14% to 33% for 2026).
Administered by
Canada Revenue Agency (harmonized federally)
Sales tax type
HST
Why Reverse Sales Tax Calculation Matters
Receipts and invoices usually show only the tax-included total, so separating revenue from GST/HST or PST collected — for bookkeeping or cross-province price comparisons — means working backward from that total. Dividing by (1 + rate) isn't the same as subtracting the rate, which is why the calculator above handles it exactly.
History & How the Rate Is Built
Ontario announced its intention to merge its provincial sales tax with the federal GST in its March 2009 budget, and the 13% HST took effect July 1, 2010 — one of the largest tax-system changes in the province's history, despite polls showing roughly 74% of Ontarians opposed it beforehand.
HST revenue is one of Ontario's largest sources of provincial revenue, and the province's decision to keep the HST — unlike British Columbia, which reversed a similar 2010 harmonization by referendum — reflects Ontario prioritizing administrative simplicity over reverting to a separate PST.
Business Use Case: Registering in Ontario
A retailer registering for GST/HST in Ontario collects the full 13% HST under one federal registration — a single combined return rather than the separate GST and PST filings required in provinces like BC or Manitoba.
Real-World Example
A $100.00 purchase in Ontario at the combined rate of 13.00%:
- Tax amount: $100.00 × 13.00% = $13.00
- Total price: $100.00 + $13.00 = $113.00
Ontario Tax Registration for Businesses
As an HST province, Ontario uses the same $30,000 national small-supplier threshold as GST — there is no separate provincial registration step.
Frequently Asked Questions — Ontario Taxes
What is the sales tax rate in Ontario?▾
Who administers sales tax in Ontario?▾
When do businesses need to register for tax in Ontario?▾
What are Ontario's income tax brackets for 2026?▾
How do I calculate sales tax on a purchase in Ontario?▾
How do I reverse Ontario sales tax to find the price before tax?▾
References & Sources
Methodology: GST/HST/PST rates and federal tax brackets are sourced directly from the Canada Revenue Agency; the $30,000 small-supplier GST/HST registration threshold has been unchanged nationally since 1991 (Excise Tax Act s.148). Ontario's provincial income tax brackets are administered by Canada Revenue Agency (harmonized federally).
Rates last verified for 2026. Tax brackets and provincial sales tax rules can change — always confirm current figures with the CRA or Ontario's provincial revenue agency before filing or invoicing. This tool is for estimation and educational purposes only and is not tax, legal, or accounting advice.
Jordan Hayes
Verified AuthorPersonal Finance Content Strategist
Jordan is a personal finance content strategist with 9+ years writing about mortgages, retirement, tax strategy, and budgeting. Every guide is cross-referenced with IRS publications, Federal Reserve data, and CFPB guidance to make complex calculations accessible. Editor at CalculatorApp.me.
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Tax-rate data, review & limitations
Jurisdiction: Ontario, Canada. Effective date: January 1, 2026. Reviewed by CalculatorApp.me editorial staff on July 26, 2026; next scheduled review: October 26, 2026.
Rates are reference estimates, not tax advice. Local rules, exemptions, filing status, and effective dates can change the amount due.
Primary sources
- Canada Revenue Agency tax-rate guidance
- Relevant provincial finance ministry guidance