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GST/HST calculator

Add or remove GST, HST, PST, QST, or RST from an amount, with rates you can change.

CAD

The amount before tax, or the amount that already includes tax, in Canadian dollars.

What should the amount do? (required)

Add tax starts from a before-tax amount. Remove tax starts from an amount that already includes the taxes.

Choosing one fills the tax names and the general rates. You can type your own rate. Nothing is filled until you choose.

Rates as of October 2, 2026. Source: Canada Revenue Agency and provincial tax offices. Check your rate with the Canada Revenue Agency or the provincial tax office. This is not tax advice.

Result

GST/HST calculator

What should the amount do? (required)
Add tax
Amount (required)
Province

Total with tax

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Enter an amount and choose a province to see the tax split.

Verify with the official source. GST and HST starting rates follow the Canada Revenue Agency table in force on 2025-04-01. Provincial rates were checked on 2026-10-02.

Estimate for planning only. This is not tax, legal, accounting or financial advice. Results depend on the figures you enter. Check all numbers, rates and rules with the official source or a qualified professional before relying on them.

How this works and common questions

About this tool

Each tax uses the rate on the form and the amount before tax. A simple estimate, not advice. Nothing you type leaves this device.

How it works

Add tax multiplies the amount by each rate and rounds half up to the cent. The taxes are not stacked: each one uses the amount before tax. Remove tax divides by one plus the sum of the rates, then uses the same split. A leftover cent goes on the last tax so the parts add up to the amount you typed. 100.00 with one rate of 13 percent is 13.00 of tax and a total of 113.00.

Rules

Choosing a province fills starting rates you can edit. The result uses the rates on the form. Verify with the official source. This is a simple estimate, not advice.

Questions

Does this add tax or take it out?

Choose Add tax to start from a before-tax amount, or Remove tax to start from an amount that already includes the taxes. Each tax is calculated on the before-tax amount.

Can I change the rate?

Yes. Choosing a province fills starting rates you can edit. The result uses the rates on the form.

How are the cents rounded?

Each tax is rounded half up to the cent. On a tax-included amount, a leftover cent goes on the last tax so the parts add up to the amount you typed.

Do I need an account?

No. The tools work without one. You only need to sign in to save your work.

Is what I type saved?

Not saved. Copy or print before you leave this page.

Do you show ads or sell my information?

No. We show no ads and we do not sell your information.

Is this tax or legal advice?

No. Results are estimates for planning. Check rates and rules with the official source or a qualified professional.

Not saved. Copy or print before you leave this page.

Estimate for planning only. This is not tax, legal, accounting or financial advice. Results depend on the figures you enter. Check all numbers, rates and rules with the official source or a qualified professional before relying on them.