The $30,000 GST/HST Threshold: When You Have to Register and Start Charging (2026)

Crossing $30,000 is not a penalty event

You're staring at an invoice you haven't sent yet, and you've done the mental math: this one puts you over $30,000. The question underneath the search is usually not "what is the small supplier rule" — it's "am I already in trouble?"

Short answer: no. Crossing $30,000 is a status change with clear rules about when you register and when you start charging. If you're reading this before or shortly after you crossed, you are almost certainly inside the window the rules give you. Here is exactly what they say.

One caution before the details: the rules care a great deal about how you crossed — in one big quarter, or gradually across several. The two paths have different start dates, and mixing them up is where most of the confusion online comes from.

How the $30,000 is actually measured

It is not your calendar year. The CRA measures the threshold over four consecutive calendar quarters — a rolling window, where a calendar quarter is the three months starting January 1, April 1, July 1, or October 1.

While your worldwide taxable revenue stays at or under $30,000 across any four consecutive quarters (and you never blow past it inside a single quarter), you are a small supplier: you don't have to register, and you don't charge GST/HST.

What counts toward the $30,000 matters too:

• Revenue before expenses, not profit. A freelancer who billed $31,000 and netted $19,000 after costs has crossed.
• All of your businesses combined. If you're a sole proprietor with a design practice and a side business, the CRA adds them together (plus revenues of any associates).
• Zero-rated supplies count toward the threshold (you'd charge 0% on them, but they still push you over).
• What doesn't count: financial services, sales of capital property, and goodwill from selling a business.

A worked example straight from the CRA's own page: $2,000 + $10,000 + $12,000 + $5,000 across four quarters = $29,000. Still a small supplier — and still one in the next quarter, unless that single quarter alone goes over $30,000.

The two ways to cross, and why they're different

This is the part nearly every blog glosses over, and it changes your dates.

Scenario 1: you blow past $30,000 inside a single calendar quarter

Say you land a big contract and one quarter alone comes to $38,000. You stop being a small supplier the day of the sale that took you over $30,000 — immediately, mid-quarter.

Three consequences:

1. You must charge GST/HST on that very sale — the one that crossed the line.
2. Your effective date of registration is no later than the day of that sale.
3. You must register within 29 days of that effective date.

So if your next invoice is the one that takes a single quarter past $30,000, the clean move is to add GST/HST to that invoice and register within 29 days. Awkward to explain to a client mid-project, but far cleaner than unwinding it later.

Scenario 2: you creep past $30,000 across quarters

This is the more common freelancer path: steady quarters that quietly add up. Say four consecutive quarters total $32,000, with no single quarter over the line.

Here the rules are gentler. You remain a small supplier until the end of the month following the quarter in which you exceeded $30,000. Then:

1. Your effective date of registration is no later than the day of your first sale after that grace period ends.
2. You start charging GST/HST from that effective date — not retroactively on the sale that crossed.
3. You must register within 29 days of the effective date.

The CRA's own example: a business crosses $30,000 over the quarter ending March 31. It stays a small supplier through April 30 (end of the following month). Its first sale after that lands May 2 — so the effective date is no later than May 2, registration is due within 29 days of that, and GST/HST applies from then on.

Notice what that means for the person searching in a panic: under the gradual path, crossing the threshold in March doesn't oblige you to charge anything until May. You have more runway than you think.

The effective-date cheat table

How you crossed	You stop being a small supplier	Start charging GST/HST	Register by
Over $30,000 in one calendar quarter	The day of the sale that crossed the line	On that same sale, and everything after	Within 29 days of that day
Over $30,000 across up to four consecutive quarters (no single quarter over)	End of the month after the quarter you crossed	Your first sale after that date	Within 29 days of your effective date
Under $30,000 in every four-quarter window	You don't — you're a small supplier	Only if you register voluntarily	No deadline; voluntary registration is effective the day you request it, or up to 30 days earlier

(Quarters are always calendar quarters: Jan–Mar, Apr–Jun, Jul–Sep, Oct–Dec.)

How people actually miss the crossing

Almost nobody misses the threshold because the rule is hard. They miss it because no one is watching a rolling four-quarter total while they're busy doing the work — the number lives in an invoice folder, not in front of them. The freelancers who get surprised are usually the gradual-path ones: three decent quarters, one good one, and the window quietly closed two months ago. (This is one of the moments VRITTI watches for automatically — it tracks your trailing 12 months and flags the small-supplier crossing before your next invoice, so the threshold can't sneak past you.)

If you'd rather do it by hand: once a quarter, total your gross taxable revenue for the last four calendar quarters. When the total passes about $25,000, start checking monthly. That's the whole system.

Registering: what it actually involves

Registration is online through Business Registration Online (BRO) — as of November 3, 2025, the CRA no longer accepts business registrations by phone. If you don't already have a business number, you get one as part of the same registration.

Have ready: your SIN, date of birth, and home postal code; your business name, business type (sole proprietor, partnership, corporation), addresses, a description of your main activity, and a reasonable estimate of annual revenue if you're newly started.

Two edge cases worth knowing:

• Ride-share and taxi drivers must register regardless of the threshold — the small supplier rule doesn't apply, and the effective date is the day you start driving.
• You generally can't register at all if you provide only exempt supplies.

And one option people forget exists: you can register voluntarily before you cross. If your clients are businesses (who recover the GST/HST they pay you anyway), registering early lets you claim input tax credits on your own expenses, and it removes the threshold-watching anxiety entirely. Worth a conversation with an accountant if you're close to the line and growing.

What changes the day you're registered

Three obligations, in the CRA's own framing: charge and collect the GST/HST on your taxable sales, file GST/HST returns, and remit the tax you collected. You also become eligible to claim input tax credits on the GST/HST you pay on business expenses. (Our HST/GST tracking guide covers the day-to-day mechanics.)

The mindset shift matters more than the paperwork: the GST/HST you collect was never your money. It passes through you on its way to the CRA. Don't fold it into your revenue, don't "save" it as if it were yours, and don't let it sit in the same mental bucket as income — keep it apart from day one and remitting is a non-event instead of a quarterly shock.

Crossed a while ago and didn't register?

First: this is fixable, and you are not the first person to fix it. The effective-date rules above don't move just because you registered late — the CRA sets your registration date based on when you stopped being a small supplier, not when you got around to the form. So the work is to figure out your true effective date, register, and sort out the GST/HST on sales since then. If you started charging the tax more than 30 days before registering, the CRA explicitly asks that you contact them to straighten out the account. The situation has a procedure, which means it has an exit. The genuinely useful move is the boring one — register now, and get the dates right rather than fast.

The one-paragraph version

If no four consecutive calendar quarters of your gross taxable revenue top $30,000, you don't have to do anything. If a single quarter blows past it, GST/HST applies from the sale that crossed, and you register within 29 days. If you creep past it across quarters, you stay a small supplier until the end of the month after the crossing quarter, charge from your first sale after that, and register within 29 days of that date. The rules are precise, the windows are real, and panic is not on the list of requirements.

This article explains CRA rules in plain language; it isn't tax advice for your specific situation. Figures and dates verified against the Canada Revenue Agency pages below on 10 June 2026.

Sources

• CRA — When to register for and start charging the GST/HST
• CRA — Register for a GST/HST account