how to calculate gst from total amount canada

GST / HST / QST Calculator

Canada's most accurate Goods and Services Tax calculator. Calculate taxes for all provinces instantly.

Fast Calculation 2024 Rates Mobile Friendly

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Amount (CAD)

Province / Territory Alberta (GST 5%) British Columbia (GST 5%) Manitoba (GST 5%) New Brunswick (HST 15%) Newfoundland (HST 15%) Nova Scotia (HST 15%) Ontario (HST 13%) Prince Edward Island (HST 15%) Quebec (GST + QST) Saskatchewan (GST 5%) Northwest Territories (GST 5%) Nunavut (GST 5%) Yukon (GST 5%)

Calculation Mode

Add Tax Remove Tax

Quick Presets:

Custom Rate (%)

%

Original

$0.00

Tax

$0.00

Total

$0.00

Recent History

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What is the Goods and Services Tax (GST)?

The Goods and Services Tax (GST) is a multi-level value-added tax of 5% introduced in Canada on January 1, 1991. It applies to most supplies of goods and services made in Canada. Several provinces have harmonized their provincial sales tax with the GST to create the Harmonized Sales Tax (HST), while Quebec applies its own Quebec Sales Tax (QST) on top of the GST.

This calculator helps you quickly determine the correct tax amount whether you are adding tax to a purchase price or removing it to find the pre-tax amount.

GST vs HST vs QST Comparison

Tax Type	Rate Structure	Total Rate	Regions
GST	Federal Tax Only	5%	AB, BC, MB, SK, Territories
HST	Federal + Provincial Combined	13% - 15%	ON, NS, NB, NL, PE
GST + QST	Federal + Quebec (Compound)	14.975%	Quebec

How to Calculate Taxes

Add GST

To calculate GST, multiply the price by 0.05.

$100 × 0.05 = $5.00 Tax

Remove GST

To find the original price before GST, divide by 1.05.

$105 ÷ 1.05 = $100.00

GST + QST

In Quebec, QST (9.975%) is calculated on the price including GST.

($100 × 1.05) × 1.09975 = $114.98

Frequently Asked Questions

A GST calculator is a tool used to compute the Goods and Services Tax on transactions in Canada. It determines the tax amount based on the input value and the applicable provincial rates (HST or QST).

HST is calculated by multiplying the amount by the harmonized rate (e.g., 13% in Ontario). For $100 in Ontario, the HST is $13. To remove HST, divide the total by 1.13.

In Quebec, GST (5%) is calculated first. Then, QST (9.975%) is calculated on the subtotal that includes the GST. This compounding method results in a slightly higher effective rate than simple addition.

To remove tax, divide the total amount by (1 + tax rate). For example, to remove 5% GST, divide by 1.05. To remove 13% HST, divide by 1.13. This gives you the original pre-tax price.

HST is used in Ontario (13%), New Brunswick (15%), Newfoundland and Labrador (15%), Nova Scotia (15%), and Prince Edward Island (15%).

GST is a specific type of value-added sales tax levied by the federal government. "Sales tax" is a broader term that can refer to GST, HST, QST, or PST depending on the province.

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