Tax Deductions for Online Sellers in Canada: The Complete List
Every deduction a Canadian online seller can claim, from cost of goods and platform fees to advertising, shipping, home office and software. What qualifies, what the CRA looks for, and how clean records make each deduction defensible. Written by a licensed Canadian CPA who works with Amazon, Etsy, Shopify and dropshipping sellers.
A Canadian online seller can deduct any reasonable expense incurred to earn business income, including cost of goods sold, platform and marketplace fees, advertising, shipping and packaging, payment processing, software, professional fees, and eligible home office and vehicle costs. The rule is that the expense must be genuine, business-related and supported by records. The same deductions apply whether you sell on Amazon, Etsy, Shopify or your own site, and whether you operate as a sole proprietor or a corporation. What separates a claimed deduction from a defensible one is clean bookkeeping.
The Rule Behind Every Deduction
There is one principle underneath the entire list: you can deduct a reasonable expense that you incurred to earn business income. If a cost is genuine, connected to your online business and supported by a record, it is generally deductible. If it is personal, unreasonable or unsupported, it is not. Everything below is simply that rule applied to the costs online sellers actually face.
The structure you operate under does not change what qualifies. It changes who reports the profit, not what counts as an expense. This is the same deduction discipline we apply across full-service e-commerce accounting and tax, whatever platform you sell on.
The Complete Deduction List for Online Sellers
These are the deductions that apply to most online sellers. Not every one will fit every shop, but this is the full field to work from:
| Deduction | What It Covers |
|---|---|
| Cost of goods sold | What you pay for inventory, materials or supplier products sold |
| Platform and marketplace fees | Amazon, Etsy, Shopify, eBay listing, referral and subscription fees |
| Payment processing fees | Card, PayPal, Stripe and marketplace payment charges |
| Advertising and marketing | Paid ads, sponsored listings, promotions and marketing tools |
| Shipping, postage and packaging | Outbound shipping, boxes, labels, mailers and supplies |
| Fulfilment and storage fees | FBA fulfilment, warehousing and storage charges |
| Software and subscriptions | Listing tools, accounting software, apps and plugins |
| Professional and accounting fees | Bookkeeping, accounting, tax and legal fees |
| Home office | A reasonable portion of home costs where the space qualifies |
| Business use of vehicle | The business-use portion of eligible vehicle costs |
| Bank and financing charges | Business account fees and interest on business borrowing |
| Tools and equipment | Equipment used to make, photograph or ship your products |
The exact mix depends on what and how you sell. A handmade seller leans on materials and a home studio, while a reseller leans on cost of goods and shipping. We match the deductions to your actual model for Amazon FBA and Shopify sellers and every other channel.
Cost of Goods Sold: Usually the Largest Deduction
For most sellers of physical products, cost of goods sold is the single biggest deduction. It is what you actually paid for the inventory or materials that sold in the year, not simply everything you bought. Stock that is still sitting unsold is inventory, not yet an expense. Matching your cost of goods to the items that actually sold is what keeps your profit accurate, and it is a common area where sellers overstate or understate the figure.
Advertising: The Deduction That Grows With You
Advertising is often the fastest-growing cost for online sellers, and it is fully deductible. Paid marketplace ads, sponsored listings, social media advertising and promotional spend all qualify as business expenses. Because ad spend can become one of your largest costs, tracking it accurately protects your profit figure and your deductions, especially for dropshipping and paid-traffic models.
Home Office: Real, But It Has to Qualify
Many online sellers run the business from home and can claim a portion of home costs, but the space and its use have to qualify. Generally, the area must be used for the business, and the deduction is based on a reasonable portion of eligible home expenses tied to that space. This is a legitimate and valuable deduction when it is set up correctly, and a frequent source of errors when it is estimated loosely instead of calculated properly.
The deduction is only as strong as the record behind it: A deduction you cannot support is a deduction the CRA can deny. Receipts, invoices, statements and a clean separation between business and personal spending are what turn a claim into a defensible one.
Deductions Apply Whatever Your Structure
Whether you are a sole proprietor or a corporation, the deductions are the same. The structure decides who reports the profit, not what qualifies as an expense. What incorporation changes is the tax rate on retained profit and your liability, which is a separate decision from your deductions. We set out that full analysis for sellers choosing between sole proprietor and corporation, and it applies across platforms.
Platform-Specific Deduction Guides
The core list above applies to every online seller, but each platform has its own fee structure and its own quirks worth knowing. These guides go deeper on the tax and deduction points specific to each channel:
| Selling Channel | Guide |
|---|---|
| Amazon FBA | Amazon FBA income tax and structure |
| Dropshipping | Dropshipping tax rules in Canada |
| Etsy | Etsy seller tax guide |
| Amazon and Shopify | Amazon FBA and Shopify sellers |
Where online sellers lose deductions: Mixing personal and business money so costs cannot be proven, deducting the full cost of unsold inventory instead of cost of goods sold, estimating the home office instead of calculating it, losing receipts for cash or app purchases, and claiming personal costs that will not survive review. Clean books prevent all five.
Case Study: Multi-Platform Seller, Ontario
An Ontario seller operating on Amazon and Etsy had been filing with a fraction of their real deductions, missing platform fees, payment charges and a legitimate home studio because their records were mixed with personal spending. We separated the accounts, rebuilt the bookkeeping so every fee, material and shipping cost was captured, calculated the home office properly, and restated the deductions on a defensible basis. The profit figure dropped to its true level and the filings were brought onside.
Not Sure You Are Claiming Every Deduction?
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Book Free ConsultationFrequently Asked Questions: Tax Deductions for Online Sellers
Every Deduction, Captured and Defensible.
We build clean books, capture every legitimate deduction across cost of goods, fees, advertising, shipping and home office, and keep your filings defensible on any platform you sell on. AFFORDABLE flat fees. All fees include HST.