Advertising and promotion: what a Canadian business can actually deduct

Marketing is one of the few costs an owner can control precisely, so it is worth knowing which parts of the spend come back as a deduction and which parts do not. The general rule is simple: an advertising or promotion cost is deductible if you incurred it to earn business income and the amount is reasonable. The complications sit in the media rules, which most owners have never heard of, and in the treatment of client gifts.

What counts as advertising and promotion

The Canada Revenue Agency treats advertising broadly. Newspaper and magazine placements, television and radio spots, search and social ads, printed flyers, signage, trade show booths, branded merchandise and the cost of building and hosting a business website all sit in the same bucket. You can also deduct any amount you paid as a finder’s fee.

What matters for the deduction is purpose, not medium. Money spent to put your business in front of potential customers is deductible. Money spent on something the shareholder personally enjoys — a golf membership, a vehicle wrap on a car that is never used for work — is not, no matter how it is coded in the books. Sloppy coding here is one of the more common bookkeeping mistakes small business owners make.

The Canadian media rules

This is the part that surprises people. To claim advertising costs, you have to meet certain Canadian content or Canadian ownership requirements. Three rules follow from that:

• Foreign broadcasters. You cannot deduct expenses for advertising directed mainly at a Canadian market when you advertise with a foreign broadcaster. A radio or television buy on a station across the border, aimed at customers in Abbotsford, is not deductible.
• Periodicals. You can deduct the full expense if the advertising is directed at a Canadian market and the original editorial content in that issue is 80% or more of the issue’s total non-advertising content. If the original editorial content is less than 80%, the deduction drops to 50% of the expense.
• Newspapers, television and radio. Advertising in Canadian newspapers and on Canadian television and radio stations is deductible.

The practical relief for most modern businesses: these requirements do not apply if you advertise on foreign websites. A digital campaign bought through a foreign-owned platform is not caught by the broadcaster rule.

Sponsorships

Sponsoring a local team, a trade association event or a community fundraiser is deductible as advertising when you receive promotional value in return — your name on a jersey, a banner at the venue, a logo in the programme. The test is whether the payment was made to earn income.

Where a payment is really a donation with no promotional benefit, it is a charitable gift rather than an advertising expense, and it is claimed differently on the corporate return. Keep the sponsorship agreement or a photograph of the signage; it is exactly the kind of substantiation that settles the question quickly if the file is ever reviewed. Sponsorship spend that is large relative to revenue is also the sort of ratio that can draw attention — see common CRA audit triggers.

Gifts to clients

A gift to a customer is deductible when it is a genuine business expense and the amount is reasonable. The catch is the composition of the gift. The maximum you can claim for food, beverage and entertainment expenses is 50% of the lesser of the amount you incurred and an amount that is reasonable in the circumstances. So a bottle of wine, a restaurant gift card or a pair of hockey tickets for a client is caught by that limit, while a branded jacket or a set of tools generally is not.

Entertainment expenses include tickets and entrance fees to entertainment or sporting events, gratuities, cover charges, and room rentals such as hospitality suites. The full mechanics, including the office-party exception, are set out in our guide to the 50% meals and entertainment rule.

Websites, content and branded merchandise

Ongoing website costs — hosting, maintenance, content writing, search advertising — are deductible in the year incurred. A large one-time build that creates a lasting asset may instead be capitalized and depreciated, which changes the timing of the deduction rather than the total. Branded merchandise given away for promotion is deductible advertising; the same items sold to customers are inventory.

Records to keep

For each campaign, keep the invoice, proof of what ran, and a short note of the business purpose. If the placement was in a periodical, keep the editorial-ratio confirmation. If it was a sponsorship, keep the agreement. These are unremarkable documents that are almost impossible to reconstruct two years later, which is why the record retention rules matter more for marketing than for most expense categories.

The bottom line

Most advertising spend by a Canadian small business is fully deductible. The exceptions are narrow but real: foreign broadcasters, thin-editorial periodicals, and anything that is food, drink or entertainment in disguise. Code those three correctly at the time of purchase and the year-end file takes care of itself.

This article is general information for Canadian business owners and is current as of July 2026. It is not tax, legal or accounting advice, and it does not create a client relationship. Tax rules change and your situation is unique — please speak with a CPA before acting on anything here.