Unknown author · Tools
2 items
Add or remove Canadian sales tax in one click: GST, HST, PST and QST for every province and territory. Free, private, no sign-up. The fastest GST/HST calculator for Canada. Pick your province, type a price, and see the GST, HST, PST or QST and the total, right in your browser toolbar. ADD OR REMOVE SALES TAX • Add tax: price before tax → GST/HST, PST/QST and the total with tax • Remove tax (reverse sales tax): price including tax → what it cost before tax, and how much of it is tax • Click any amount to copy it EVERY PROVINCE AND TERRITORY • Ontario HST 13% • Nova Scotia HST 14% • New Brunswick, Newfoundland and Labrador, Prince Edward Island HST 15% • Quebec GST 5% + QST 9.975% = 14.975% • British Columbia GST 5% + PST 7% = 12% • Manitoba GST 5% + RST 7% = 12% • Saskatchewan GST 5% + PST 6% = 11% • Alberta, Yukon, Northwest Territories, Nunavut GST 5% RIGHT-CLICK ANY PRICE Highlight a price on any web page, right-click, and choose "Add sales tax" or "Remove sales tax". The calculator opens with the price filled in. IN ENGLISH AND FRENCH Calculatrice TPS/TVH/TVQ en français, with French number formatting (114,98 $). PRIVATE BY DESIGN No account, no tracking, no ads. The extension never reads your pages: it only sees a price when you right-click it. Your province choice is saved in Chrome so you don't pick it twice. MADE BY NORTHOS NorthOS is bookkeeping for Canadian sole proprietors, freelancers and side hustles. It tracks the GST/HST you charge and pay, scans receipts, and prepares your T2125. Try it free for 14 days at northos.ca.
Nov 1, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.