Shopify seller tax services: GST/HST by province, real deductions, returns that hold up

GST/HST follows your customer, not your office

For goods shipped to Canadian buyers, the place-of-supply rules set the tax by the destination province — not by where your business sits. A Brampton brand charges 13% HST on an Ontario order, 5% GST on an Alberta order, and 15% HST on anything headed to the Atlantic provinces. Shopify's tax settings can apply the right rate at checkout, but the platform files nothing: the GST/HST return, the remittance, and any provincial sales tax registrations are entirely on you.

We reconcile what Shopify actually collected against what should have been collected each period, because a rate misconfigured for one province quietly compounds with every order until someone checks. Filing frequency is the other lever: annual is the default for smaller merchants, but a growing store often does better filing quarterly — smaller remittances, fresher numbers, and no surprise bill the following June.

The deductions Shopify brands under-claim

DTC spending hides recoverable tax. Meta and Google now charge GST/HST to Canadian advertisers, and so does Shopify on its subscription and app fees — all of it claimable as input tax credits, but only if the invoices are captured rather than buried in a credit card feed. On the income tax side, the same spending is fully deductible, and the pattern matters: ad spend, apps, themes, product photography, shipping supplies, 3PL fees, and payment processing all belong in distinct expense lines so your T2 tells a coherent story.

• Ad platforms: claim the GST/HST on Meta, Google, and TikTok invoices — most sellers never pull them from the ad managers.
• App stack: review, email, and subscription apps billed in USD still carry deductible costs; we convert consistently using Bank of Canada rates.
• Contractors: Canadian freelancers you pay for design or content may need T4A slips — cheap to file, expensive to ignore.

Inventory write-downs turn dead stock into deductions

Tax law lets you value inventory at the lower of cost and fair market value, and for an apparel or consumer brand that rule has teeth. The colourway that never sold, the packaging redesign that orphaned old stock, the seasonal line now worth clearance pricing at best — each can be written down at year-end, reducing taxable income now instead of when you finally liquidate. The write-down needs evidence: sell-through reports from Shopify, discounting history, and disposal records if stock was donated or destroyed. We build that file at year-end so the deduction survives scrutiny, not just filing.

The same discipline applies in reverse: stock still moving at full price stays at cost. A blanket percentage haircut across all SKUs is the write-down CRA rejects; a SKU-by-SKU case built from your own sales data is the one it accepts.

T2 or T2125 — and what a flopped launch is worth

Incorporated brands file a T2; sole proprietors report on a T2125 inside the personal return, due June 15 with any balance owing April 30. The structures diverge hardest in a bad year. A launch that flops — big inventory buy, heavy ad spend, weak sell-through — often produces a non-capital loss, and losses are assets: they carry back three years or forward twenty. A corporation files Schedule 4 with the T2 to recover tax paid in profitable prior years; an individual files a T1A loss carryback request against prior personal returns. Turning last year's tax into this year's cash is frequently the single biggest number we find in a first-year engagement.

Selling into the US from your own store

Your US orders are zero-rated for GST/HST, but volume south of the border eventually raises state economic nexus questions — and unlike Amazon, no marketplace facilitator collects for a standalone Shopify store. When and where to register, and what a US LLC would change, is a cross-border question we cover properly on our cross-border accounting for Shopify sellers page. Our Canadian tax work keeps the door open: clean revenue-by-destination records make any future US registration a data export, not an archaeology project.

Source: CRA — GST/HST for businesses.