GST/HST Reporting for Sole Proprietors, Simply Explained

If you’re self-employed in Canada, GST/HST is probably the tax topic you understand least and worry about most. Here’s the plain-language version: what it is, when it applies to you, and how to stay on the right side of it without hiring a bookkeeper in your first year.

What GST/HST actually is

GST (Goods and Services Tax) and HST (Harmonized Sales Tax) are consumption taxes you collect from customers on the government’s behalf. In Ontario, New Brunswick, Nova Scotia, PEI, and Newfoundland and Labrador, the federal and provincial portions are combined into one HST charge (13% in Ontario, 15% in the Atlantic provinces). Everywhere else, you charge 5% GST, plus provincial sales tax separately where it applies.

The key point: this is not a tax on your profit. You collect it, hold it briefly, and remit it to the CRA. Handled correctly, it never comes out of your pocket.

The $30,000 rule: when registration becomes mandatory

You must register for a GST/HST account once your worldwide taxable sales exceed $30,000 — measured over four consecutive calendar quarters, or within a single calendar quarter. Below that line, you’re a “small supplier” and registration is optional.

Three things people get wrong about this threshold:

• It’s revenue, not profit. $30,000 in sales counts even if your expenses were $29,000.
• It’s rolling, not annual. The CRA looks at the current quarter plus the previous three — not your fiscal year.
• Missing the deadline costs you. If you were required to register and didn’t, the CRA treats you as registered from the date you should have been. You owe the tax on sales you never collected it on — out of your own pocket.

One exception: taxi and ride-share drivers must register from their first dollar of fares. The threshold doesn’t apply to them.

Why many sole proprietors register voluntarily

Below $30,000, registration is optional — but often worth it. A registered business claims back the GST/HST it pays on expenses as input tax credits (ITCs): equipment, software subscriptions, professional fees, office supplies. If you’re spending real money to get set up, voluntary registration can put thousands back in your pocket.

It also reads as credibility. Business clients reclaim the GST/HST you charge them, so it costs them nothing — and an unregistered supplier can look like a hobbyist to a procurement department.

The main reason to wait: your customers are everyday consumers and your margins are thin. Registration makes your prices 5 to 15 percent higher to the public, or squeezes your margin if you absorb it.

What “reporting” actually involves

Once registered, the cycle is simple:

1. Charge GST/HST on your taxable sales and show it separately on invoices.
2. Track the GST/HST you pay on business purchases (your input tax credits).
3. File a return for each reporting period (annually, quarterly, or monthly depending on your revenue) and remit the difference: tax collected minus ITCs.

The part that trips people up isn’t the math — it’s the records. Every ITC you claim needs a receipt showing who you paid, how much, when, and the tax charged. The CRA requires you to keep those records for six years from the end of the tax year they relate to. A shoebox of fading thermal-paper receipts is not a system.

How Lemon fits

This is exactly the workflow Lemon was built for. Snap a photo of every business receipt and OCR fills in the details automatically. Tag business spending separately from personal. When filing time comes, generate a clean report of your taxable sales and ITCs instead of reconstructing a year from a camera roll. Your accountant gets a tidy package; you get your weekend back.

GST/HST stops being scary the moment your records stop being a mess. Start with today’s receipts.

This article is general information, not tax advice. For your specific situation, talk to an accountant.

Download Lemon free on the App Store or Google Play — scan receipts, tag business spending, and generate GST/HST-ready reports.

Earning on the side rather than running a full business? Our guide to side hustle taxes in Canada covers what the CRA requires from the first dollar — and how it connects to the $30,000 GST/HST line above.