Introduction
If you’ve recently started a business in Canada — or you’ve been running one for a while — you’ve almost certainly come across the terms GST and HST. For many small business owners, these three-letter acronyms trigger instant confusion, anxiety, or both.
The good news is that GST and HST are not as complicated as they might seem. This guide breaks everything down in plain, straightforward language so you can understand your obligations, stay compliant with the Canada Revenue Agency, and avoid the common mistakes that trip up so many Canadian business owners.
What Is GST?
GST stands for Goods and Services Tax. It is a federal tax of 5% that applies to most goods and services sold or provided in Canada. It is collected by businesses on behalf of the federal government and remitted to the Canada Revenue Agency.
What Is HST?
HST stands for Harmonized Sales Tax. It is a combination of the federal GST and a provincial sales tax, merged into a single tax. HST applies in provinces that have agreed to harmonize their provincial sales tax with the federal GST. These provinces are Ontario, New Brunswick, Newfoundland and Labrador, Nova Scotia, and Prince Edward Island.
The HST rate varies by province. For example, in Ontario the HST rate is 13%, which consists of the 5% federal portion and an 8% provincial portion.
What About QST?
In Quebec, the provincial sales tax is called the QST — Quebec Sales Tax — and it operates separately from the GST. Quebec businesses must register for and remit both GST and QST independently. At JayJay Consulting, we handle QST filings for Quebec-based clients as part of our tax services.
Do You Need to Register for GST/HST?
This is the question most new business owners ask first — and the answer depends on your revenue.
You are required to register for GST/HST when your business’s total taxable revenues exceed $30,000 in a single calendar quarter or over four consecutive calendar quarters. Once you cross this threshold, you become what the CRA calls a registrant and you are legally required to collect and remit GST/HST.
If your revenues are below $30,000 you are considered a small supplier and registration is optional — though voluntary registration can sometimes be beneficial, particularly if you have significant business expenses and wish to claim input tax credits.
Important: The $30,000 threshold applies to your total revenues, not your profit. As soon as you exceed it, you must register promptly. Failing to register when required can result in penalties and interest.
How Does GST/HST Work in Practice?
Once registered, here is how it works in practice:
You collect GST/HST from your customers on top of your regular prices and add it to your invoices. You then remit the tax you have collected to the CRA, minus any input tax credits you are eligible to claim.
Input Tax Credits (ITCs) are one of the most important concepts to understand. As a registered business, you can recover the GST/HST you paid on eligible business expenses — things like office supplies, equipment, software, professional services, and more. This is why voluntary registration can sometimes make sense even if you are below the threshold — you can get back the tax you pay on your business purchases.
GST/HST Filing Periods
How often you file depends on your annual taxable revenues:
Annual filer — if your revenues are under $1.5 million, you may file once per year. Your deadline is typically three months after your fiscal year end.
Quarterly filer — if your revenues are between $1.5 million and $6 million, you are required to file quarterly.
Monthly filer — if your revenues exceed $6 million, you must file monthly.
The CRA will assign you a filing period when you register, though you can request to file more frequently if that works better for your cash flow.
Missing a deadline results in penalties and interest — so it is critical to stay on top of your filing schedule.
Common GST/HST Mistakes Canadian Business Owners Make
Not registering on time — many business owners don’t realize they have crossed the $30,000 threshold until well after the fact. It is important to track your revenues closely throughout the year.
Not keeping receipts for input tax credits — you are entitled to claim back the GST/HST you pay on business expenses, but only if you have the receipts to back it up. Good bookkeeping makes this effortless.
Mixing personal and business expenses — this is one of the most common issues and it makes GST/HST filings much more complicated. Always keep your business and personal finances completely separate.
Forgetting to remit on time — collecting GST/HST from customers and then missing the remittance deadline is a surprisingly common mistake. The CRA charges interest and penalties on late remittances, which can add up quickly.
Applying the wrong rate — if you operate across multiple provinces, you need to apply the correct GST/HST rate based on the province where your customer is located — not where your business is based. This is called the place of supply rule and it catches many business owners off guard.
How JayJay Consulting Can Help
GST/HST compliance is one of the areas where having a professional in your corner makes a genuine difference. At JayJay Consulting we handle GST, HST, and QST registration, preparation, and filing for businesses across Canada — in both English and French.
We make sure your returns are filed accurately, your input tax credits are maximized, and you never miss a deadline. Whether you are just starting out and need to register for the first time, or you have been filing for years and want to make sure everything is in order, we are here to help.
Conclusion
GST and HST don’t have to be confusing. Once you understand the basics — when to register, how to collect, how to claim your input tax credits, and when to file — it becomes a manageable and routine part of running your business.
The key is to stay organized, keep accurate records, and never miss a filing deadline. And if you’d rather leave it to a professional, that’s exactly what we’re here for.
Have questions about GST/HST for your business? Contact JayJay Consulting today for a free consultation — we’ll make sure your sales tax obligations are handled correctly from day one.