GST HST Canada: The Complete 2026 Guide

Everything you need to know about charging, collecting, and remitting sales tax in the Great White North

Let's cut through the confusion, eh? If you're doing business in Canada, navigating the GST/HST system can feel like trying to find your way through a snowstorm without a toque. But here's the truth: once you understand the basics, it's not as complicated as it seems. The Canada Revenue Agency (CRA) has set up a system that's actually pretty straightforward — if you know where to look.

Quick Answer

GST is the 5% federal tax applied nationwide, while HST combines GST with provincial sales tax into a single rate (13-15%) in five provinces. You must register when your taxable revenue exceeds $30,000 in four consecutive quarters, then charge, collect, and remit the appropriate rate based on where your customer receives their goods or services.

GST vs HST: What's the Big Difference?

Think of GST as the base layer — a consistent 5% federal tax from coast to coast to coast. HST, on the other hand, is what happens when provinces decide to "harmonize" their provincial sales tax with the federal GST. It's like getting a double-double instead of separate cream and sugar — blended for convenience.

  • GST provinces: Alberta, BC, Manitoba, Saskatchewan, Quebec, and territories (just the 5% federal rate)
  • HST provinces: Ontario (13%), New Brunswick (15%), Newfoundland & Labrador (15%), Nova Scotia (15%), PEI (15%)
  • Quebec: Charges its own QST (9.975%) on top of GST, administered separately
  • BC, SK, MB: Have separate PST systems that businesses must manage alongside GST

The beauty of HST? One tax, one administration, one return. The headache? If you're operating in non-HST provinces, you might be juggling multiple tax systems like a street performer with too many loonies.

When Do You Need to Register? (The $30K Rule)

Here's where many small business owners get tripped up. The magic number is $30,000 in taxable revenue over four consecutive calendar quarters. Hit that threshold, and boom — you're no longer a "small supplier" and must register for a GST/HST number.

But here's the kicker: you might want to register voluntarily even if you're under that limit. Why? Input Tax Credits (ITCs), that's why. If you're shelling out serious loonies on business expenses, registering lets you claim back the GST/HST you paid. It's like getting a refund on your double-double habit.

Unsure About Your Registration Status?

Our step-by-step guide helps you determine if you need to register and how to get your GST/HST number without the CRA headaches

GST Registration Guide

Charging the Right Rate: Destination Matters

Here's a common mistake that's cost many businesses more than a few toonies: you always charge tax based on where your customer receives the goods or services, not where your business is located. Selling from Alberta to Ontario? You charge 13% HST. The other way around? Just 5% GST.

Know Your Provinces

HST rates vary from 13% in Ontario to 15% in Atlantic provinces. PST adds another layer of complexity.

Input Tax Credits

Claim back GST/HST paid on business expenses. This is the real perk of registration.

Electronic Filing

As of 2024, electronic filing is mandatory for most businesses. No more paper returns.

Small Supplier Exemption

Under $30K? You're exempt, but might want to register anyway for ITCs.

Filing Your Returns: Don't Be Late

CRA doesn't mess around with deadlines. File late, and you're looking at penalties that'll make your eyes water faster than a Canadian winter. For reporting periods starting in 2024 or later, electronic filing isn't just recommended — it's mandatory. No more mailing in paper returns, folks.

Your filing frequency depends on your annual revenue:

  • Annual: Under $1.5 million in taxable supplies
  • Quarterly: Between $1.5 million and $6 million
  • Monthly: Over $6 million

But here's the thing: even if you're an annual filer, you might need to make quarterly instalments if you owe more than $3,000. It's like the CRA wants to make sure you're paying attention, eh?

Need Help Calculating What You Owe?

Our sales tax calculator takes the guesswork out of GST/HST calculations

Sales Tax Calculator

Common Pitfalls That'll Cost You

Even seasoned business owners stumble on these:

  • Not registering on time: The CRA charges penalties from the date you should've registered
  • Charging the wrong rate: That 2% difference between provinces adds up fast across thousands in sales
  • Forgetting about PST: BC, SK, and MB require separate PST registrations and filings
  • Poor record-keeping: You need receipts to claim ITCs, and CRA loves to audit ITC claims
  • Mixed-use assets: Using that laptop 50% business, 50% personal? You can only claim 50% of the ITC

Understanding how Canada's tax brackets work alongside GST/HST can help you see the full picture of your tax obligations.

The Digital Economy Twist

Since July 2021, non-resident vendors selling digital products to Canadians face the same rules. If you're a US-based business hitting $30,000 in B2C sales to Canada, you need to register. And here's where it gets extra fun: Quebec, Saskatchewan, BC, and Manitoba have their own digital taxes with different thresholds. Saskatchewan hits you from dollar one — no minimum threshold.

Frequently Asked Questions

What's the difference between GST and HST in Canada?
GST is the 5% federal tax applied nationwide. HST is a combined tax that merges the 5% GST with provincial sales tax into a single rate (13-15%) in five provinces: Ontario, New Brunswick, Newfoundland & Labrador, Nova Scotia, and Prince Edward Island. HST simplifies administration by having one tax return instead of two separate ones.
When exactly do I need to register for GST/HST?
You must register when your total taxable revenue exceeds $30,000 in a single calendar quarter or over four consecutive calendar quarters. Revenue includes worldwide taxable sales, leases, and supplies. If you hit $30,000 in one quarter, you're required to register immediately. If it's over four quarters, you're required to register by the end of the month following the quarter when you exceeded the threshold.
How do input tax credits actually work?
Input Tax Credits (ITCs) let you recover the GST/HST you paid on business expenses. When you file your return, you subtract your ITCs from the GST/HST you collected from customers. You only remit the difference to CRA. For example, if you collected $5,000 in GST and paid $2,000 on business expenses, you remit $3,000. You must have proper receipts showing the GST/HST paid to claim ITCs.
What happens if I don't register when I should?
The CRA will assess penalties and interest from the date you were required to register. You may be liable for all GST/HST you should have collected, plus penalties up to 10% of the uncollected amount, plus daily compound interest. The CRA can also assess penalties for failing to file returns. In short, it's way cheaper to register on time than face the consequences.
Do I charge GST or HST for out-of-province sales?
You charge based on the destination — where your customer receives the goods or services. If you're in Alberta selling to Ontario, charge 13% HST. If you're in Ontario selling to Alberta, charge just 5% GST. For goods shipped to another province, the tax rate is determined by the delivery address. This is crucial for e-commerce businesses shipping across Canada.
How often do I need to file GST/HST returns?
Filing frequency depends on your annual revenue: annual filing for under $1.5 million, quarterly for $1.5 million to $6 million, and monthly for over $6 million. However, even annual filers may need to make quarterly instalments if they owe more than $3,000 annually. Starting with periods beginning in 2024, electronic filing is mandatory for most businesses.
Can I register voluntarily if I'm under the $30K threshold?
Absolutely, and it often makes sense! Voluntary registration lets you claim ITCs on business expenses from day one. If you're spending heavily on equipment, software, or inventory before generating significant revenue, registering early can improve cash flow. It also signals professionalism to clients who expect to see GST/HST on invoices and can claim their own ITCs.
How do I handle GST/HST for digital products and services?
Non-resident vendors selling digital products to Canadian consumers must register and charge GST/HST if they exceed $30,000 in B2C sales over 12 months. Quebec, Saskatchewan, BC, and Manitoba have additional provincial digital taxes. Saskatchewan has no threshold (you register from first sale), while BC and Manitoba have $10,000 thresholds. Quebec's QST applies at 9.975% for B2C sales over $30,000.
What's the deal with provinces that don't use HST?
British Columbia, Saskatchewan, and Manitoba maintain separate Provincial Sales Tax (PST/RST) systems alongside the 5% GST. This means businesses must register for both GST and provincial tax, file separate returns, and follow different rules. Quebec administers its own QST (9.975%) separately from GST, requiring a separate registration with Revenu Québec. Alberta and the territories have no provincial sales tax, so only 5% GST applies.
How do I calculate net tax and what goes in each box?
Net tax is calculated as GST/HST collected minus ITCs eligible for refund. On your return, you report total sales in Line 101, GST/HST collected in Line 105, ITCs in Line 106, and the difference (net tax) in Line 109. If Line 109 is positive, you owe that amount. If negative, you get a refund. Our sales tax calculator can help ensure accuracy before filing.
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