What happens when my freelance income crosses $30,000 in Canada?

How does the CRA decide you've crossed the line?

The CRA applies two tests, and failing either one ends your small-supplier status:

1. The single-quarter test. If your total worldwide revenue from taxable supplies exceeds $30,000 in any one calendar quarter, you stop being a small supplier immediately.
2. The four-quarter test. If your revenue exceeds $30,000 over four consecutive calendar quarters — without exceeding it in any single quarter — you stop being a small supplier at the end of the month following those four quarters.

Both tests use gross revenue from taxable supplies (including zero-rated supplies), before expenses, across all your businesses.

What is the single-quarter rule in practice?

This is the urgent one. Suppose you invoice $8,000 a quarter for three quarters, then land a $25,000 project in the fourth. The quarter you bill that project, you cross $30,000. From that moment:

• You must start collecting GST/HST on your taxable supplies made in Canada, starting with the very supply that put you over — even though you are not yet registered.
• You must apply to the CRA for GST/HST registration before the 30th day after you stopped being a small supplier (in other words, within 29 days).
• Once registered, you get a nine-digit business number and a GST/HST program account (called an RT account).

Because you owe the tax from the triggering sale onward, the practical lesson is to watch your quarterly totals and register slightly early rather than scramble after the fact.

What is the four-quarter rule in practice?

This one is gentler. If your revenue grows steadily — say $9,000 per quarter for four quarters, totalling $36,000 — you never exceed $30,000 in a single quarter. You remain a small supplier through those four quarters and for the month following them. You begin collecting GST/HST on supplies made after that point, and you apply for registration within 29 days of ceasing to be a small supplier.

Most freelancers cross the threshold this way: slow, steady growth that quietly adds up.

What changes the day you register?

Four things change at once:

• Your invoices change. In Ontario you add 13% HST to taxable supplies. A $5,000 invoice becomes $5,650.
• You can claim input tax credits. The GST/HST you pay on business purchases — equipment, software, subcontractors — can now be deducted from the GST/HST you collect.
• You file GST/HST returns. You report the tax you collected, subtract your input tax credits, and remit the difference (your net tax). If your credits exceed what you collected, you claim a refund.
• Every dollar counts. Once registered, all your taxable supplies are subject to GST/HST — you cannot pick and choose which clients to charge.

Should I tell my clients?

Yes, and sooner is better. Most business clients are GST/HST registrants themselves, so the HST you charge them becomes their input tax credit — your 13% surcharge costs them nothing net. Individual consumers absorb the full cost, so for consumer-facing freelancers the conversation is about whether to absorb part of the HST or raise prices. Either way, surprising a client with an unexpected line item on an invoice is the worst option.

How do I avoid being caught by surprise?

Check your revenue against the $30,000 threshold at the end of every calendar quarter — not your fiscal year, the calendar quarter. If you are trending toward the limit, register voluntarily before you cross it. Voluntary registration gives you the same account and obligations, minus the retroactive charging scramble. Many accountants suggest registering when you hit roughly $25,000 in trailing-twelve-months revenue, precisely to avoid the single-quarter trap.