Calculators

Calculate sales taxes for residents of Quebec 2021

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Formula for calculating the GST and QST

Amount before sales tax x (GST rate/100) = GST amount
Amount without sales tax x  (QST rate/100) = QST amount
Amount without sales tax +  GST amount + QST amount = Total amount with sales taxes

GST rates have been the same since 2008 at 5%.

QST rates have been the same since 2013, at 9.975%.

> Reverse calculator of sales tax, GST and QST in 2020

You can also reverse the calculation and get the total amount without the taxes. The simple formula for the same is:

Amount with sales taxes-GST(5%)-QST= Amount without the taxes.

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