Tax & employment

What was the price before sales tax?

Extract the pre-tax price and tax amount from a total that already includes general provincial sales tax.

2026 rules · Last verified August 2026 · Based on official Canadian sources
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Your assumptions

Estimated price before sales tax

$100

Planning estimate — not financial advice.

Sales tax extracted$13
Combined sales-tax rate13 %
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Understand the result

Reverse Sales Tax

01

Tax-included price

A total that already contains the applicable Goods and Services Tax, Harmonized Sales Tax, Provincial Sales Tax or Quebec Sales Tax.

02

How the estimate is built

Divides the entered total by one plus the combined general sales-tax rate for the selected province or territory.

03

What to verify

Exempt, zero-rated, restaurant, accommodation and place-of-supply rules are not modelled.

Recommended next step

Continue the same decision

Use the next calculator to check another part of the same financial question.

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Sales Tax

Calculate Goods and Services Tax (GST), Harmonized Sales Tax (HST), Provincial Sales Tax (PST) or Quebec Sales Tax (QST).

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Helpful answers

Frequently Asked Questions

How do I remove tax from a total price in Canada?

To find the pre-tax price, you divide the tax-included total by one plus the applicable combined tax rate. A reverse sales-tax calculator handles the correct GST, HST, PST or QST structure for the selected province.

How do I calculate the price before HST?

Divide the tax-included amount by 1 plus the HST rate expressed as a decimal. The difference between the total and the calculated pre-tax price is the HST included in the original amount.

How do I remove GST and QST from a total in Quebec?

A reverse Quebec sales-tax calculation uses the combined effect of the applicable GST and QST rates to determine the pre-tax price. The calculator then separates the estimated GST and QST contained in the total.

Can I subtract 13% from a price to remove 13% HST?

No. If tax was added to a pre-tax price, subtracting 13% of the tax-included total does not return the original amount. You need to divide the total by 1.13 when the applicable HST rate is 13%.

How much tax is included in a tax-included price?

The included tax equals the total price minus the calculated pre-tax price. The exact amount depends on the province and tax rate applicable to the transaction.

Official sources and rule record

Methodology & official sources

How this estimate works

Divides the entered total by one plus the combined general sales-tax rate for the selected province or territory.

Exempt, zero-rated, restaurant, accommodation and place-of-supply rules are not modelled.

ca.expanded.2026.v1 · Effective 2026-01-01 · 2026 rules · Last verified August 2026 · Based on official Canadian sources