Want to figure out how much the original cost of your purchase was before taxes were added? Look no further than this reverse tax calculator for Canadians. The reverse calculator below takes into account all GST, HST, PST, and QST for all the provinces in Canada. 

It will work as a reverse GST calculator, a reverse HST calculator, a reverse GST PST calculator, and even a reverse GST QST calculator.

Below are instructions on how to use it. 

GST/HST/PST/QST Provincial Table

Here are the tax rates are broken down by province:

Reverse GST Calculator

Provinces and Territories with GST: Alberta, British Columbia (BC), Manitoba, Northwest Territory, Nunavut, Quebec, Saskatchewan, Yukon
GST Tax Rate: 5%

If you’re looking for a reverse GST only calculator, the above is a great tool to use. Just set it to the GST Only setting, and enter in the after-tax dollar amount that you want to reverse. The given number will be the before-GST number that will be calculated. 

With the reverse GST calculator above, you won’t ever have to manually calculate this again. The GST is a Goods and Services Tax for most things sold in Canada. 

Reverse HST Calculator

Provinces and Territories with HST: New Brunswick, Newfoundland and Labrador, Nova Scotia, Ontario, Prince Edward Island
HST Tax Rate: 13% for Ontario, 15% for others

If you want a reverse HST calculator, the above tool will do the trick. Just set it to the HST province that you want to reverse, and enter in the after-tax dollar amount that you want to reverse. The given number will be the pre-HST number that will be calculated. 

With the reverse HST calculator above, you won’t ever have to calculate this manually again and should save you a lot of time. 

The Harmonized Sales Tax (HST) is a combined federal and provincial goods and services tax. 

Reverse GST PST Calculator

Provinces and Territories with PST: British Columbia, Manitoba, Saskatchewan
PST Tax Rate: 6% for Saskatchewan, 7% for others

If you’re looking for a reverse GST and PST calculator, you can set the calculator above to one of the three provinces that have PST. This will combine the GST and PST, and you can enter the amount to then reverse it out. 

If you want a reverse GST PST calculator BC only, just set the calculator above for British Columbia, and it will back out the 12% combined tax rate for the amount you enter in.

The Provincial Sales Tax (PST) applies only to three provinces in Canada. The PST is combined with GST to give the total tax for goods and services for residents of those provinces. 

Reverse GST QST Calculator

Provinces and Territories with QST: Quebec
QST Tax Rate: 9.975%

The above calculator works as a reverse GST QST calculator also. You just set the province to Quebec, set the dollar amount you want to reverse, and the tool will do the rest. 

It’s great to have a reverse GST QST calculator because it will save you a lot of time when you’re trying to figure out how much taxes you have spent on your purchase. 

The Quebec Sales Tax (QST) is simply the sales tax applied in the province of Quebec. Why is QST 9.975%? It’s because when the government changed it back in 2003 from 9.5% to 9.975%, they wanted to keep the same level of revenue because the calculation was slightly different and was no longer charging it on amounts, including GST.

Conclusion

It can be tricky to reverse out your GST, HST, PST, and QST payments when you need them during the tax time. Thanks to the reverse tax calculator above, this is no longer a worry.