PST vs GST vs HST: Key Differences in Canada

If you run a business in Canada, understanding PST vs GST vs HST isn’t just a compliance task—it directly impacts your pricing, cash flow, and reporting. Yet, many small business owners and startups struggle with how these taxes actually work in practice.

The confusion is understandable. Canada’s sales tax system isn’t uniform across provinces. Instead, it’s a mix of federal and provincial taxes that apply differently depending on where you operate, what you sell, and who your customers are.

This guide breaks it all down in a clear, practical way—so you can stay compliant and make better financial decisions.

What Are GST, PST, and HST?

Before comparing them, let’s quickly define each one.

1. GST (Goods and Services Tax)

GST is a federal tax applied across Canada at a standard rate of 5%. It applies to most goods and services unless they are specifically exempt or zero-rated.

Think of GST as the baseline tax that almost every business in Canada deals with.

2. PST (Provincial Sales Tax)

PST is a provincial-level tax that exists only in certain provinces. Each province sets its own rules, rates, and exemptions.

Provinces that use PST include:

• British Columbia
• Saskatchewan
• Manitoba

PST is separate from GST, meaning businesses often need to charge both taxes independently.

3. HST (Harmonized Sales Tax)

HST is a combined tax that merges GST and PST into a single, unified tax.

Provinces using HST include:

• Ontario
• Nova Scotia
• New Brunswick
• Newfoundland and Labrador
• Prince Edward Island

Instead of charging two separate taxes, businesses collect one HST rate, which includes both federal and provincial portions.

PST vs GST vs HST: Key Differences at a Glance

How Each Tax Works in Practice

GST: Simple and Nationwide

GST applies across Canada and is relatively straightforward.

• You charge 5% GST on taxable sales
• You can claim Input Tax Credits (ITCs) on business expenses
• You remit the difference to the Canada Revenue Agency (CRA)

This system avoids tax-on-tax and ensures businesses aren’t taxed on their own inputs.

PST: More Complex and Province-Specific

PST works differently from GST.

• You charge PST based on the province where the sale occurs
• You typically cannot claim input tax credits on PST paid
• Rules vary widely across provinces

This means higher administrative effort, especially if you operate in multiple provinces.

HST: Streamlined but Not Universal

HST simplifies things by combining GST and PST.

• You charge a single tax rate (e.g., 13% in Ontario)
• You file through the CRA
• You can claim input tax credits on the full amount

For many businesses, HST is the easiest system to manage.

Why the Differences Matter for Your Business

Understanding PST vs GST vs HST is not just academic—it affects real business decisions.

1. Pricing Strategy

Your product pricing must reflect the correct tax structure.

• In HST provinces: one inclusive rate
• In PST provinces: separate taxes added

Incorrect pricing can hurt margins or confuse customers.

2. Cash Flow Management

GST and HST allow input tax credits, which can improve cash flow.

PST does not offer the same benefit, meaning:

• Higher upfront costs
• Less recoverable tax

3. Compliance Risk

Each tax has its own compliance rules.

• GST/HST → Federal reporting
• PST → Provincial reporting

Missing registrations or filing incorrectly can lead to penalties.

Which Provinces Use Which Tax System?

Here’s a quick breakdown:

GST Only Provinces

• Alberta
• Northwest Territories
• Yukon
• Nunavut

Businesses here only charge 5% GST.

GST + PST Provinces

• British Columbia
• Saskatchewan
• Manitoba

You must charge both taxes separately.

HST Provinces

• Ontario (13%)
• Nova Scotia (15%)
• New Brunswick (15%)
• Newfoundland and Labrador (15%)
• Prince Edward Island (15%)

You charge one combined tax.

Input Tax Credits: A Key Difference

One of the biggest differences in PST vs GST vs HST is how tax credits work.

GST/HST

• Businesses can claim input tax credits
• Reduces overall tax burden
• Avoids cascading taxes

PST

• Generally no input tax credits
• Becomes a real cost to the business
• Impacts profitability

This distinction is critical for budgeting and forecasting.

When Do You Need to Register?

GST/HST Registration

You must register if:

• Your revenue exceeds $30,000 in a 12-month period

Even if you’re below this threshold, voluntary registration can be beneficial.

PST Registration

Requirements vary by province, but generally apply if:

• You sell taxable goods/services in that province
• You have a physical or economic presence there

Common Mistakes Businesses Make

Even experienced business owners get tripped up by sales taxes.

1. Charging the Wrong Tax Rate

Applying GST instead of HST—or missing PST entirely—can create compliance issues.

2. Ignoring Interprovincial Sales Rules

Selling across provinces means:

• Different tax rates
• Different registration requirements

3. Missing Input Tax Credits

Many businesses fail to claim eligible ITCs, leaving money on the table.

4. Late or Incorrect Filings

Separate systems for PST and GST increase the risk of errors.

How to Stay Compliant

Here are some practical tips:

• Use accounting software that supports Canadian tax rules
• Track province-specific sales carefully
• Maintain clear documentation for input tax credits
• Review tax rates regularly (they can change)
• Work with a professional accountant

PST vs GST vs HST: Which One Is Better?

There’s no single “better” system—it depends on your business.

• HST → Simplest and most efficient
• GST only → Straightforward and predictable
• PST → More complex but unavoidable in certain provinces

The key is understanding how each system impacts your operations.

How Mehra CPA Can Help

Managing sales taxes across provinces can quickly become overwhelming—especially as your business grows.

At Mehra CPA, we help small businesses and startups across Canada:

• Register for GST, PST, and HST correctly
• Ensure accurate tax collection and reporting
• Maximize input tax credits
• Stay compliant with evolving tax regulations
• Handle multi-province tax complexities

Whether you’re just starting out or scaling operations, our tax experts simplify the process so you can focus on running your business.

Frequently Asked Questions (FAQs)

1. What is the main difference between PST vs GST vs HST?

GST is a federal tax, PST is a provincial tax, and HST combines both into a single tax system.

2. Do all provinces in Canada charge PST?

No, only certain provinces like British Columbia, Saskatchewan, and Manitoba charge PST.

3. Can I claim input tax credits on PST?

In most cases, no. PST is generally not recoverable, unlike GST and HST.

4. What is the GST rate in Canada?

The GST rate is 5% across all provinces and territories.

5. What is the HST rate in Ontario?

Ontario’s HST rate is 13%, combining federal and provincial taxes.

6. Do I need to register for GST if I earn less than $30,000?

Not necessarily, but voluntary registration can allow you to claim input tax credits.

7. How do I know which tax to charge for online sales?

It depends on the customer’s location. You must apply the tax rules of the province where the customer resides.

8. Is HST easier to manage than PST and GST?

Yes, HST simplifies tax collection and reporting by combining both taxes into one system.