---
title: "GST/HST Calculator Canada – Sales Tax by Province (PST, QST) – Chrome extension stats, history and permissions"
description: "No user count, no ratings yet. Version 1.0.0, updated 2026-11-01. Requests 2 permissions."
url: "https://extensiontracker.com/extension/gnhmaimecicoajclbbpgiegjgfimjlmb"
---

# GST/HST Calculator Canada – Sales Tax by Province (PST, QST)

Live in the Chrome Web Store.

- Users: the store shows no user count
- Rating: no ratings yet
- Last checked: 2026-11-08 10:07 UTC
- Users gained in 7 days: – (needs a week of history)
- Users gained in 30 days: – (needs a month of history)

## The listing

What the Chrome Web Store shows, as of the last check.

Summary from the listing:

> Add or remove Canadian sales tax in one click: GST, HST, PST and QST for every province and territory. Free, private, no sign-up.

- Extension ID: `gnhmaimecicoajclbbpgiegjgfimjlmb`
- Developer: Not named in the listing
- Enhanced Safe Browsing: Not trusted ([what this means](https://extensiontracker.com/enhanced-safe-browsing))
- Category: [Productivity › Tools](https://extensiontracker.com/category/productivity/tools)
- First published: 2026-11-01
- Last updated: 2026-11-01
- Version: `1.0.0`
- Size: 29.03 KiB
- Minimum Chrome: 88
- Languages (2): English, français
- Support page: `https://northos.ca`
- Chrome Web Store: <https://chromewebstore.google.com/detail/gsthst-calculator-canada/gnhmaimecicoajclbbpgiegjgfimjlmb>
- View its code or download CRX: <https://crxpeek.com/extension/gnhmaimecicoajclbbpgiegjgfimjlmb>
- Search Google for the ID: <https://www.google.com/search?q=%22gnhmaimecicoajclbbpgiegjgfimjlmb%22&tbs=li:1>

## Users over time

One row per check, newest first, as shown on the Chrome Web Store.

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-11-08 | – | – | – |
| 2026-11-02 | – | – | – |

## What changed

Every change found on a check, newest first.

No changes found since tracking began on 2026-11-02.

## Developer history

Moves to another publisher account and new contact emails, newest first.

No move to another account and no new contact email since tracking began on 2026-11-02.

We know contact emails only by a keyed hash, so they're never shown. Recent changes: [Account and contact changes](https://extensiontracker.com/owners/).

## What it can access

From the extension's manifest, in plain language.

### Browser features

- `contextMenus`: Add items to the right-click menu
- `storage`: Save settings and data in your browser

## About this data

Collected from the extension's public Chrome Web Store listing. It's checked again 7 and 30 days after it was published, and again whenever a new version appears. Last checked 2026-11-08 10:07 UTC; next check around 2026-12-01.

How the data is collected: <https://extensiontracker.com/methodology>.

## Cite this page

Extension Tracker. “GST/HST Calculator Canada – Sales Tax by Province (PST, QST)” (gnhmaimecicoajclbbpgiegjgfimjlmb). Chrome Web Store data, last checked 2026-11-08. https://extensiontracker.com/extension/gnhmaimecicoajclbbpgiegjgfimjlmb. Accessed 2026-11-13.

```bibtex
@misc{extensiontracker_gnhmaimecicoajclbbpgiegjgfimjlmb,
  title   = {GST/HST Calculator Canada – Sales Tax by Province (PST, QST) (gnhmaimecicoajclbbpgiegjgfimjlmb)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-11-08},
  url     = {https://extensiontracker.com/extension/gnhmaimecicoajclbbpgiegjgfimjlmb},
  urldate = {2026-11-13}
}
```

---

From Extension Tracker, a public record of the Chrome Web Store: <https://extensiontracker.com/extension/gnhmaimecicoajclbbpgiegjgfimjlmb>. It isn't affiliated with Google. The data is free to reuse under CC BY 4.0 (<https://creativecommons.org/licenses/by/4.0/>), crediting Extension Tracker. Every page except search comes as Markdown too: add `format=md` to the address, as in `https://extensiontracker.com/extension/{id}?format=md`.