GST/HST Registration Threshold in Canada: The $30,000 Rule

Every Canadian freelancer and small business eventually asks the same question: at what point do I have to register for GST/HST? The headline answer is $30,000, but the way the CRA actually measures that number trips up more businesses than the number itself. It’s not your calendar year. It’s not your fiscal year. And in one common scenario, you stop being exempt on the very day of a single sale.

This guide covers exactly how the $30,000 small-supplier threshold works in 2026: the two tests the CRA applies, when your registration takes effect, the 29-day deadline, who’s excluded from the rule entirely, and when registering before you have to is the smarter move.

The Small-Supplier Rule at a Glance

Below $30,000 you’re a “small supplier”: you don’t have to register, charge or remit GST/HST. Cross the line and registration stops being optional.

The Two Tests, and Why the Difference Matters

The CRA applies two separate tests, and they have very different consequences.

Test 1: More than $30,000 in a single calendar quarter

If your taxable revenue exceeds $30,000 within one calendar quarter (January–March, April–June, July–September, October–December), you lose small-supplier status immediately. Your effective date of registration is no later than the day of the supply that pushed you over, and you must charge GST/HST on that very sale, including the amount that crossed the line.

Land a $35,000 contract in February? You’re expected to charge GST/HST on that invoice, even though you weren’t registered the day before. You then have 29 days from that effective date to actually register.

Test 2: More than $30,000 over four consecutive calendar quarters

If you cross $30,000 gradually (over the last four consecutive calendar quarters, but never in a single quarter), the transition is gentler. You keep small-supplier status for that quarter plus one following month. Your effective date is the first supply after that grace period ends, and again you have 29 days from the effective date to register.

The trap: people check their threshold once a year, at tax time. The four-quarter window is rolling: it can be crossed in July just as easily as in December. If you’re anywhere near $25,000 in trailing revenue, check the window every quarter.

What Counts Towards the $30,000

• Worldwide taxable supplies, including zero-rated sales (like exports) and sales made outside Canada by you or your associates
• Revenue, not profit: $32,000 in sales with $28,000 in costs is still over the line
• Associated businesses count together: you can’t split one business into two entities to stay under two separate $30,000 limits; the CRA aggregates associates
• What doesn’t count: exempt supplies (financial services, most residential rent, many health and education services), sales of capital property, and goodwill from selling a business

Once You Cross: What To Do

1. Register with the CRA, online through Business Registration Online or your CRA My Business Account. You’ll get a business number with an RT account (e.g., 123456789 RT0001)
2. Charge the right rate from your effective date. The rate depends on your customer’s province: 5% GST in Alberta, the territories and the PST provinces; 13% HST in Ontario; 14% in Nova Scotia (reduced from 15% on 1 April 2025); 15% in New Brunswick, Newfoundland and Labrador, and PEI. Quebec runs its own 9.975% QST alongside the 5% GST. Our GST/HST guide for Canadian small businesses breaks down every province
3. Start tracking input tax credits (ITCs): from registration onward, the GST/HST you pay on business expenses comes back to you
4. Pick a filing frequency: annual is the default for most small businesses (with quarterly instalments once net tax exceeds $3,000), but you can elect monthly or quarterly

Registering late

If you should have registered and didn’t, the CRA can backdate your registration to the day you crossed the threshold. You’ll owe the GST/HST you should have collected (out of your own pocket, since you can’t rebill old customers), plus interest and possible penalties. If you discover you’re over the line, register immediately; a voluntary correction is treated far better than an audit finding.

Who the Threshold Doesn’t Protect

• Taxi operators and commercial ride-share drivers (Uber, Lyft): mandatory registration from the first dollar of fares; the $30,000 rule simply doesn’t apply
• Non-resident digital businesses: since July 2021, foreign vendors selling digital products or services to Canadian consumers face their own $30,000 (CAD) threshold over 12 months under the simplified GST/HST regime
• Charities and public institutions: the math is different, with a $50,000 taxable-supplies test, and charities can also qualify as small suppliers under a $250,000 gross-revenue test

Voluntary Registration: Sometimes Under the Line Is the Wrong Place

You can register before you hit $30,000, and often you should:

• Your clients are businesses. They reclaim whatever GST/HST you charge, so it costs them nothing, while you unlock ITCs on your laptop, software, home-office expenses and accountant’s fees
• You’re investing ahead of revenue. Startups recover the GST/HST on equipment and services from day one
• You export. Exports are zero-rated: you charge 0% but still claim ITCs, so registration is a pure refund
• You’d rather look established. An invoice without GST/HST quietly tells every client you bill under $30,000

The trade-offs: filing returns (even nil ones), and if your customers are consumers, a 5–15% price increase or margin hit. A part-time freelancer at $20,000 selling to individuals is usually better off staying out.

One more option once you’re in: the Quick Method, available to most small businesses with up to $400,000 in annual taxable sales, lets you remit a flat percentage instead of tracking every ITC. It’s often simpler, and sometimes cheaper.

Common Mistakes

1. Checking the threshold against the calendar year: it’s a single quarter OR a rolling four-quarter window, crossable any month of the year
2. Thinking the threshold is profit: it’s gross taxable revenue
3. Not charging GST/HST on the sale that crossed the line: under the single-quarter test, that sale is already taxable
4. Splitting revenue across associated entities: the CRA aggregates associates; this doesn’t work
5. Forgetting zero-rated sales count: exports at 0% still push you toward $30,000
6. Ride-share drivers assuming the threshold applies: it doesn’t; registration is required from fare one

How Odiverse Keeps You on the Right Side

Odiverse tracks your taxable revenue continuously against both CRA tests (the single-quarter spike and the rolling four-quarter window), so you see the line coming instead of discovering it at tax time. Once registered, invoicing applies the correct rate for your customer’s province automatically (GST, HST at 13/14/15%, alongside QST and PST handling), and every invoice flows straight into your books. See what changed for Canadian businesses this year in our 2026 tax changes guide, or how the CRA’s digital-first push raises the bar for your systems.

Know Your Number

$30,000. One quarter or four rolling quarters. Twenty-nine days to register. If you’d rather have software watch that line for you, try Odiverse free, or see how it works for Canadian freelancers.

Frequently Asked Questions

What is the GST/HST registration threshold in Canada in 2026? $30,000 in worldwide taxable supplies, measured over a single calendar quarter or the last four consecutive calendar quarters. The figure hasn’t changed since 1991 and is not indexed to inflation.

Is the $30,000 GST threshold based on profit or revenue? Revenue. The test uses the total consideration for your taxable supplies; costs and margins are irrelevant.

Do I charge GST/HST on the sale that puts me over $30,000? If you cross the threshold within a single calendar quarter, yes: your effective registration date is no later than that sale, and it’s taxable. Under the four-quarter test, you get the rest of the quarter plus one month before you must start charging.

How long do I have to register after crossing the threshold? 29 days from your effective date of registration.

Can I register for GST/HST voluntarily below $30,000? Yes. It’s usually worthwhile when your customers are businesses (they recover the tax) or when you have significant expenses generating input tax credits.

Does the $30,000 threshold apply to Uber and taxi drivers? No. Taxi and commercial ride-share drivers must register for GST/HST from their first dollar of fares, regardless of income.