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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
Subtotal (Before Tax): $0.00
Federal GST (5%):$0.00
Provincial Portion:$0.00
Total After Tax: $0.00
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.
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(Ontario Example)
ADD HST
$100 + 13% HST = $113
Total including HST REVERSE HST
$113 ÷ 1.13 = $100
Amount before HST How to Use This Calculator
To Add HST
- 1
Enter the amount before tax.
- 2
Select your province 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 and taxable status.
- 3
Click "Calculate Tax" to get the amount before tax.
HST Calculator Formula
Total After Tax = Amount x (1 + Tax Rate)
Multiply the amount before tax by (1 + the applicable tax rate) to get the total including tax.
Reverse HST Calculator Formula
Amount Before Tax = Total ÷ (1 + Tax Rate)
Divide the total amount including tax by (1 + the applicable tax rate) to remove the tax.
GST, HST, PST, and QST Rates by Province
| Province / Territory | Tax Type | Rate | Reverse Divisor |
|---|---|---|---|
| Ontario | HST | 13% | 1.13 |
| Nova Scotia | HST | 14% | 1.14 |
| New Brunswick | HST | 15% | 1.15 |
| Newfoundland and Labrador | HST | 15% | 1.15 |
| Prince Edward Island | HST | 15% | 1.15 |
| Alberta | GST | 5% | 1.05 |
| British Columbia | GST + PST | 12% | 1.12 |
| Manitoba | GST + RST | 12% | 1.12 |
| Saskatchewan | GST + PST | 11% | 1.11 |
| Quebec | GST + QST | 14.975% | 1.14975 |
| Yukon / NWT / Nunavut | GST | 5% | 1.05 |
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. If your books are behind, monthly bookkeeping support can help you get current before filing season.
Tax-Included Prices
Determine base price for reporting and analysis.
Refunds and Adjustments
Calculate pre-tax amounts for credits or adjustments.
Taxable, Zero-Rated, and Exempt Supplies
Taxable Supplies
Most goods and services are taxable under GST/HST.
Zero-Rated Supplies
Certain exports and international transportation qualify for 0% tax.
Exempt Supplies
Specific goods and services are not subject to GST/HST.
Common HST Calculation Mistakes
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Using the wrong tax rate for the province.
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Forgetting to include or remove discounts.
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Applying tax to exempt or zero-rated supplies.
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Rounding errors in manual calculations.
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Confusing GST with HST or PST/QST.
Examples by Business Type
Related Services and Guides
GST/HST Filing
File accurately and on time.
Monthly Bookkeeping
Keep your books clean and organized.
Corporate Tax Filing
Maximize deductions and stay compliant.
CRA Notices
Expert help with CRA correspondence.
HST QuickBooks Canada Guide
Step-by-step setup and reporting.
When and How to File HST Tax Return
Deadlines and requirements.
Frequently Asked Questions
HST stands for Harmonized Sales Tax, a single combined rate that folds the federal GST and provincial sales tax into one payment. It applies in Ontario, Nova Scotia, New Brunswick, Newfoundland and Labrador, and Prince Edward Island.
GST is the flat 5% federal tax that applies in every province and territory. In HST provinces, the provincial portion is blended into a single rate collected and remitted to CRA rather than tracked separately.
Select your province in the calculator and the correct rate applies automatically. If you are billing a client in a different province, use the province where the supply is made, not where your office is located.
Generally yes, if you are GST/HST registered and the purchase was made for commercial use. Keep your invoices organized because CRA expects documentation when they review ITC claims. Your monthly bookkeeping records should track this throughout the year.
No. Basic groceries, most healthcare services, and certain exports are either zero-rated or exempt and do not carry HST. If you are uncertain how your specific service is classified, confirm before invoicing to avoid under-collecting or over-collecting.
The rate table on this page reflects current rates across all provinces and territories, including Nova Scotia's reduction to 14% effective April 2025. For official confirmation, always cross-check with CRA's rate guidance before filing.
