Canadian Sales Tax Calculator

If you need to calculate Canadian sales taxes quickly (as a Canada-based business invoicing other Canadian businesses), we now have a tool for that. Calculate GST, HST, QST, or PST for any invoice in seconds. Select your province, your client’s province, enter an amount, and get a full tax breakdown, including which tax applies and why.

Works in both directions: enter a pre-tax amount to calculate what to invoice, or enter a gross total to extract the tax components from an amount you already have.

Covers all 13 provinces and territories. Accounts for place-of-supply rules, including the QST registrant exception for out-of-province suppliers invoicing Quebec clients.

Your Province / Territory

Client’s Province / Territory

Pre-tax Amount ($CAD)

How This Calculator Works

Canadian sales tax is not one-size-fits-all. The tax that applies to an invoice and the rate depends on where your client is located, not where you are. This is called the place-of-supply rule, and it determines whether you charge HST, GST plus a provincial tax, or GST alone.

This tool applies those rules automatically based on your inputs.

Forward Calculation – Net to Gross

Enter your pre-tax amount. The calculator returns the applicable GST, HST, or provincial tax lines and your total invoice amount. Use this when you know what you want to earn and need to know what to bill.

Reverse Calculation – Gross to Net

Enter a total that already includes tax. The calculator strips out the tax components and returns the net amount underneath. Use this when reconciling a payment received or verifying a vendor invoice.

Tax Rates by Province (as of 2026)

Province / Territory	Tax Type	Rate
Ontario	HST	13%
New Brunswick	HST	15%
Nova Scotia	HST	15%
Newfoundland & Labrador	HST	15%
Prince Edward Island	HST	15%
Quebec	GST + QST	5% + 9.975% = 14.975%
British Columbia	GST + PST	5% + 7% = 12%
Manitoba	GST + RST	5% + 7% = 12%
Saskatchewan	GST + PST	5% + 6% = 11%
Alberta	GST only	5%
Yukon	GST only	5%
Northwest Territories	GST only	5%
Nunavut	GST only	5%

The QST Exception

Quebec’s provincial tax (QST) only applies when the supplier is also registered for QST, meaning a Quebec-based business. If you are located outside Quebec and invoicing a Quebec client, the calculator applies GST only and flags the exception. If you hold a QST registration number despite being based elsewhere, treat your province as Quebec when using this tool.

PST and Out-of-Province Suppliers

British Columbia, Manitoba, and Saskatchewan have their own provincial sales taxes that operate separately from the federal GST. As a general rule, out-of-province suppliers are not required to collect these taxes unless they have a registration obligation in that province. The calculator applies GST only in those cases and shows a contextual note explaining the situation.

Using this Sales Tax Calculator

Here are several use cases for the calculator.

Freelancers and Consultants Preparing Invoices

If you work with clients across multiple provinces, tax calculation is a recurring source of friction. A Quebec-based consultant invoicing a client in Ontario charges HST at 13%, not QST. A British Columbia agency invoicing an Alberta client charges GST only. This tool removes the guesswork and gives you the right numbers before you open your invoicing software.

Business Owners Reconciling Payments

When a client sends a lump-sum payment that includes tax, reverse calculation lets you confirm what the net amount should be and whether the tax split is correct. Useful for bookkeeping cleanup and matching invoice amounts against bank deposits before month-end.

Frequently Asked Questions

Which province determines what tax I charge: mine or my client’s?

For most services, the place of supply is your client’s province. That means the tax type and rate are determined by where your client is located, not where you operate. This calculator applies that rule automatically. There are limited exceptions for certain types of supplies (real property, transportation), but for professional and digital services, the client’s province governs.

I am in Quebec. Do I charge QST to all my clients?

No. QST applies to your Quebec clients only. When you invoice a client in Ontario, you charge HST (13%) -> the client’s province governs. When you invoice a client in Alberta, you charge GST only (5%). QST is a Quebec-to-Quebec transaction. Select your province as Quebec and your client’s province separately to get the correct result for each scenario.

My client is in British Columbia. Do I need to charge PST?

Not automatically. Out-of-province suppliers are generally not required to collect BC PST unless they are registered for PST in British Columbia. The same applies to Manitoba RST and Saskatchewan PST. This calculator shows GST only for out-of-province scenarios and includes a note explaining the situation. If you have nexus or registration in a PST province, consult a tax advisor to confirm your obligations.

How does the reverse calculation work?

Reverse mode takes a gross amount (the total including tax) and works backward to extract the net and tax components. For example, a $1,000 HST-inclusive invoice from Ontario is divided by 1.13 to get the $884.96 net, with $115.04 HST. For multi-part taxes like GST plus QST, the calculator divides by the combined rate (1.14975) and then allocates each component proportionally.

Are these tax rates current?

The rates reflected in this calculator are: GST 5%, Ontario HST 13%, HST for New Brunswick / Nova Scotia / Newfoundland / PEI at 15%, QST 9.975%, BC PST 7%, Manitoba RST 7%, Saskatchewan PST 6%. These are the current federal and provincial rates as of 2026. Tax rates are set by federal and provincial legislation and can change.