Reverse Sales Tax Calculator

Calculate the price before tax when you know the total price including tax.

Total Price (including tax)

Province/Territory

Add Sales Tax Calculator

Calculate the total price when you know the price before tax.

Price Before Tax

Province/Territory

Input Tax Credit (ITC) Calculator

Calculate the GST/HST Input Tax Credit you can claim on business expenses.

Business Expense (including tax)

Province/Territory

Compare Prices Across Provinces

See how much a product costs in different provinces after tax.

Price Before Tax

Canadian Sales Tax Rates by Province (2025)

Current GST, HST, and PST rates for all Canadian provinces and territories.

Ontario

HST 13%

Harmonized Sales Tax

Type: Combined federal and provincial tax

Quebec

14.975%

GST 5% + QST 9.975%

Note: QST calculated on price + GST

British Columbia

12%

GST 5% + PST 7%

Type: Separate federal and provincial taxes

Alberta

GST 5%

No provincial sales tax

Lowest rate in Canada

Saskatchewan

11%

GST 5% + PST 6%

Type: Separate federal and provincial taxes

Manitoba

12%

GST 5% + PST 7%

Type: Separate federal and provincial taxes

Nova Scotia

HST 15%

Harmonized Sales Tax

Highest HST rate

New Brunswick

HST 15%

Harmonized Sales Tax

Type: Combined federal and provincial tax

Prince Edward Island

HST 15%

Harmonized Sales Tax

Type: Combined federal and provincial tax

Newfoundland and Labrador

HST 15%

Harmonized Sales Tax

Type: Combined federal and provincial tax

Yukon

GST 5%

No territorial sales tax

Federal tax only

Northwest Territories

GST 5%

No territorial sales tax

Federal tax only

Nunavut

GST 5%

No territorial sales tax

Federal tax only

Understanding Canadian Sales Tax

What is GST (Goods and Services Tax)?

The Goods and Services Tax (GST) is a federal value-added tax of 5% applied throughout Canada. It's collected by the Canada Revenue Agency (CRA) on most goods and services sold in Canada.

Rate: 5% across all provinces and territories
Collected by: Canada Revenue Agency (CRA)
Applied to: Most goods and services
Exemptions: Basic groceries, prescription drugs, medical devices, some educational services

What is HST (Harmonized Sales Tax)?

The Harmonized Sales Tax (HST) combines federal GST with provincial sales tax into a single tax. Five provinces currently use HST: Ontario, Nova Scotia, New Brunswick, Prince Edward Island, and Newfoundland and Labrador.

Ontario HST: 13% (replaced GST + PST in 2010)
Maritime HST: 15% in NS, NB, PE, NL
Administration: Single tax collected by CRA
Benefit: Simpler for businesses and consumers

What is PST (Provincial Sales Tax)?

Provincial Sales Tax (PST) is a retail sales tax collected by provinces separately from federal GST. British Columbia, Saskatchewan, and Manitoba use PST systems.

BC PST: 7% (separate from GST)
Saskatchewan PST: 6% (separate from GST)
Manitoba PST: 7% (also called RST - Retail Sales Tax)
Collection: Provincial governments collect PST separately

Quebec's Unique System (GST + QST)

Quebec uses a unique two-tax system with federal GST and provincial QST (Quebec Sales Tax). The QST is calculated differently than other provincial taxes.

GST: 5% on sale price
QST: 9.975% on price including GST
Effective Rate: 14.975% total
Example: $100 item = $5 GST + $10.50 QST = $115.50 total
Administration: Revenu Québec collects both taxes

How to Calculate Reverse Sales Tax

To find the pre-tax price when you know the total including tax, use this formula:

Formula: Pre-tax Price = Total Price ÷ (1 + Tax Rate)
Example (Ontario 13%): $113 ÷ 1.13 = $100
Example (BC 12%): $112 ÷ 1.12 = $100
Example (Alberta 5%): $105 ÷ 1.05 = $100

What is Input Tax Credit (ITC)?

Input Tax Credit (ITC) allows GST/HST-registered businesses to recover the GST/HST paid on business expenses. This prevents double taxation and is a key feature of the value-added tax system.

ITC Meaning: Credit for GST/HST paid on business purchases
What does ITC stand for: Input Tax Credit
Eligibility: Businesses registered for GST/HST
Claimable: GST/HST on goods and services used for business purposes
Reporting: Claimed on GST/HST returns to CRA
Documentation: Must retain invoices and receipts
Example: Buy $1,130 equipment (including 13% HST) → Claim $130 ITC

PST vs GST vs HST: Key Differences

GST: Federal tax, 5% nationwide, collected by CRA
HST: Combined federal and provincial tax (13-15%), single administration
PST: Provincial tax only (6-7%), separate from GST, collected by province
Collection: GST/HST by CRA; PST by provincial government
ITC: Available for GST/HST; not available for PST

Frequently Asked Questions

How do I calculate reverse sales tax?

To calculate reverse sales tax, divide the total price (including tax) by (1 + tax rate). For example, in Ontario with 13% HST: $113 ÷ 1.13 = $100 pre-tax price. This removes the tax from the total to find the original price.

What is the HST rate in Ontario?

The HST rate in Ontario is 13%. This Harmonized Sales Tax combines the 5% federal GST with 8% provincial portion into a single tax. Ontario adopted HST in July 2010, replacing the previous GST + PST system.

How much is GST in Canada?

The GST rate in Canada is 5% nationwide. This federal Goods and Services Tax has been 5% since 2008 (reduced from 6% in 2006 and 7% before 2006). GST applies in all provinces and territories.

What is the tax rate in Quebec?

Quebec has a combined tax rate of 14.975%. This consists of 5% GST plus 9.975% QST (Quebec Sales Tax). Note that QST is calculated on the price including GST, making it slightly higher than a simple addition would suggest.

How do I use a reverse HST calculator?

To use a reverse HST calculator: 1) Enter the total price including HST, 2) Select your province, 3) Click calculate. The calculator divides the total by (1 + HST rate) to determine the pre-tax price and shows the HST amount separately.

What is BC sales tax?

British Columbia uses a combined system with 5% federal GST plus 7% provincial PST, totaling 12%. BC returned to this system in 2013 after briefly using HST from 2010-2013. PST and GST are calculated and collected separately.

What does ITC mean in GST?

ITC stands for Input Tax Credit. It's the GST/HST that businesses can recover on purchases used for business purposes. ITC prevents double taxation by allowing businesses to claim back the tax they paid on inputs, only charging customers for the value they added.

What is Saskatchewan sales tax?

Saskatchewan has a combined sales tax of 11%, consisting of 5% federal GST and 6% provincial PST. These taxes are applied separately and collected by different government levels. Saskatchewan PST applies to most goods but exempts many services.

How do I calculate pre-tax price?

To calculate the pre-tax price (before tax calculator): Divide the total price by (1 + tax rate as decimal). Example: $113 total with 13% tax = $113 ÷ 1.13 = $100 pre-tax. This removes the tax to find the original price.

What is reverse GST calculation?

Reverse GST calculation determines the pre-GST price from a total that includes GST. Formula: Pre-GST Price = Total ÷ 1.05. Example: $105 total ÷ 1.05 = $100 pre-GST price. The GST amount is then $5 (5% of $100).

How does Quebec QST work?

Quebec's QST (Quebec Sales Tax) is unique because it's calculated on the price including GST. For a $100 item: GST = $5 (5%), then QST = $10.50 (9.975% of $105), for a total of $115.50. This differs from provinces where provincial tax is calculated on the base price only.

Which Canadian province has the lowest sales tax?

Alberta has the lowest sales tax in Canada at only 5% GST with no provincial sales tax. The three territories (Yukon, Northwest Territories, and Nunavut) also have only 5% GST. Nova Scotia, New Brunswick, PEI, and Newfoundland have the highest at 15% HST.

Can businesses claim PST back like GST/HST?

No, businesses cannot claim Input Tax Credits (ITC) for PST. ITC only applies to GST/HST. This is a key difference between PST systems (BC, SK, MB) and HST provinces. Businesses in PST provinces can only recover the GST portion, not the provincial PST.

How do I calculate HST backwards?

To calculate HST backwards (reverse HST): Divide the total by (1 + HST rate). For 13% HST: Total ÷ 1.13 = Pre-tax price. For 15% HST: Total ÷ 1.15 = Pre-tax price. Then subtract the pre-tax price from the total to find the HST amount.

What items are exempt from GST/HST in Canada?

Common GST/HST exemptions include: basic groceries (milk, bread, vegetables), prescription drugs, medical devices and services, residential rent, most financial services, child care services, and some educational services. Exempt items have no GST/HST charged, and suppliers cannot claim ITC on related inputs.

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Last Updated: January 2025

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Accuracy of Calculations

IMPORTANT: This reverse sales tax calculator is provided for informational and educational purposes only. While we strive for accuracy using current 2025 tax rates, we make no warranties or guarantees about the accuracy, completeness, or reliability of the calculations.

Not Professional Advice

Not Tax Advice: The information and calculations provided are NOT professional tax, legal, or financial advice. Do not rely solely on this calculator for tax filing or business decisions.
Consult Professionals: For specific tax questions, always consult a qualified tax professional, accountant, or the Canada Revenue Agency (CRA).
Rate Changes: Tax rates can change. While we update rates regularly, there may be delays. Always verify current rates with official sources.

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Simplified Calculations: This calculator uses standard rates and may not account for all exemptions, special circumstances, or regional variations.
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Official Sources

For authoritative tax information, please consult:

Canada Revenue Agency (CRA): www.canada.ca/en/revenue-agency
Provincial Tax Authorities: Contact your provincial ministry of finance or revenue department
Revenu Québec: For Quebec-specific tax information

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By using this calculator, you acknowledge that you understand these limitations and agree to use the tool at your own risk. This calculator is a convenience tool and should not replace professional advice or official tax resources.

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Reverse Sales Tax Calculator Canada