When Should You Register for GST/HST in Canada?

If you are starting a business in Canada, you have probably heard that you need to register for GST/HST at $30,000 in revenue, but what does that actually mean, and should you register earlier? Many business owners are confused about when they must register and when it might make sense to voluntarily register before hitting the threshold.

Here is a straightforward breakdown of how GST/HST registration works and what new business owners need to consider.

The $30,000 Rule: When GST/HST Becomes Mandatory

The $30,000 threshold applies to your total worldwide taxable revenue over four consecutive calendar quarters. Once you hit $30,000 in revenue, you are no longer considered a "small supplier" and must register for GST/HST immediately.

The $30,000 includes all sales before deducting expenses.

The rule applies to any rolling four-quarter period (not just the calendar year).

Once you hit the threshold, you must start charging GST/HST on your next sale.

If you exceed $30,000 in a single quarter, you must register immediately.

Should You Register Before Reaching $30,000?

Even if you are not required to register yet, there are some benefits to registering early.

You can claim input tax credits (ITCs). If your business has startup costs and expenses where you are paying GST/HST (like equipment, software, or supplies), registering early allows you to claim that tax back. This can help offset costs in the early stages.

You look more credible to clients. Many B2B clients expect businesses to charge GST/HST. If you are not registered, they may assume you are too small or not fully established.

Easier to integrate into pricing. If you wait until after hitting $30,000, you will suddenly have to increase prices by 5% to 15% (depending on your province). Registering early lets you build the tax into your pricing model from day one.

However, there are downsides to registering early:

More paperwork and filings. Once registered, you must collect and remit GST/HST, even if you have low revenue. You will also need to file returns, even if you have nothing to remit.

Not beneficial if clients are tax-exempt. If your customers do not pay GST/HST (e.g., certain non-profits or exports), registering early adds complexity without much benefit.

Your prices might look higher to customers. If most of your clients are individuals (who cannot claim tax credits), charging GST/HST could make your pricing seem less competitive.

How to Register for GST/HST

If you decide to register, you can do so:

Online through the

By calling the CRA at 1-800-959-5525

You will receive a Business Number (BN) and your GST/HST account number, which you will use to collect and remit tax.

Bottom Line: Should You Register Early?

If you expect to hit $30,000 in revenue quickly, it might be easier to register early so you are not scrambling last minute. If you have significant startup expenses, registering early can help you recover some of those costs through input tax credits.

On the other hand, if you are running a small side hustle with no plans to scale past $30,000 soon, it might be better to wait and avoid the extra administrative work.

Every business is different, so it helps to consult an accountant to make sure you are making the best choice for your situation.