Calculation of inverted taxes for residents of Quebec in 2021

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Tax rate GST and QST for 2021

GST rates are the same since 2008 at 5%.

The QST rate is the same since 2013 at 9.975%. However, the “final rate” remains the same since 2012 as the method of calculating QST has changed on January 1st 2013.

Calculator Formula

Here is how the total is calculated before sales tax:
Amount with sales tax / (1+(GST and QST rate combined/100)) or 1.14975 = Amount without sales tax
Amount without sales tax * GST rate = GST amount
Amount without sales tax * QST rate = QST amount

> Calculator of sales tax, GST and QST in 2020

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