HST Tax Calculator Canada: Add or Reverse HST
Calculate GST, HST, PST, and QST for Canadian invoices and receipts quickly and accurately.
Canadian Sales Tax Calculator
Calculate or reverse GST, HST, PST, and QST instantly with multi-item lists.
Invoice Line Items
Calculation Breakdown
Awaiting real-time data input adjustments...
Note: Formula for extracting tax in Reverse Mode: $\text{Pre-tax Amount} = \text{Total Amount} \div (1 + \text{Tax Rate})$. Zero-rated items (like core groceries) and exempt categories yield 0% metrics.
Need specialized corporate help tracking, registering or processing HST logs?
Book a Professional ConsultationQuick Answers
(Ontario Example)
How to Use This Calculator
To Add HST
- 1
Enter the amount before tax.
- 2
Select your province or territory and taxable status.
- 3
Click "Calculate Tax" to get the total after tax.
To Reverse HST
- 1
Enter the total amount including tax.
- 2
Select your province or territory and taxable status.
- 3
Click "Calculate Tax" to get the amount before tax.
HST Calculator Formula
Multiply the amount before tax by (1 + applicable tax rate) to get the total amount including tax.
Reverse HST Calculator Formula
Divide the total amount including tax by (1 + applicable tax rate) to remove the tax.
GST, HST, PST, and QST Rates by Province
| Province / Territory | GST | PST | QST | Total Tax Rate | Notes |
|---|---|---|---|---|---|
| Ontario | — | — | — | 13% HST | Harmonized Sales Tax |
| Alberta | 5% | — | — | 5% GST | Goods and Services Tax |
| British Columbia | 5% | 7% | — | 12% (5% GST + 7% PST) | Provincial Sales Tax |
| Quebec | 5% | — | 9.975% | 14.975% (5% GST + 9.975% QST) | Quebec Sales Tax |
| Nova Scotia | — | — | — | 14% HST | Harmonized Sales Tax |
When Should You Use the Reverse HST Calculator?
Receipts
Remove tax from total amounts on receipts.
Invoices
Find the pre-tax amount from tax-inclusive invoices.
Bookkeeping Cleanup
Reconcile records when only total amounts are available.
Tax-Included Prices
Determine base price for reporting and analysis.
Refunds & Adjustments
Calculate pre-tax amounts for credits or adjustments.
Taxable, Zero-Rated, and Exempt Supplies
Taxable Supplies
Most goods and services are taxable and subject to GST/HST.
Zero-Rated Supplies
Certain exports and international transportation qualify for 0% tax.
Exempt Supplies
Specific goods and services are exempt from GST/HST.
Common HST Calculation Mistakes
-
Using the wrong tax rate for the province.
-
Forgetting to include or remove discounts.
-
Applying tax to exempt or zero-rated supplies.
-
Rounding errors in manual calculations.
-
Confusing GST with HST or PST/QST.
Examples by Business Type
Frequently Asked Questions
Still have questions? We're here to help.
Talk to a Canadian tax expert today and get peace of mind.
