Marketing agency tax services: zero-rated US revenue, media HST, and early losses

The agency T2: revenue timing before tax rates

An agency's corporate return lives or dies on timing, because retainers and project fees rarely line up with the calendar. Retainer income is earned as the months pass; a prepaid quarter collected in December is not December profit, and a reserve for unearned amounts keeps it out of income until the work is delivered. On the other side, completed-but-unbilled project work at year-end still belongs in revenue. We tie the T2 to a deferred revenue and WIP schedule so the corporation is taxed on the year it actually had.

Once the profit figure is honest, the rate story is the familiar CCPC one — Ontario's combined 12.2% on the first $500,000 of active income, then planning around owner salary and dividends. For agencies the timing layer matters more than the rate layer, because a single big campaign billed in the wrong period can swing taxable income by six figures.

US clients: zero-rated revenue with the paperwork to prove it

Services supplied to non-resident, non-registered clients — including advertising services specifically — are zero-rated for GST/HST. You charge 0% to the Chicago DTC brand on retainer, yet still claim input tax credits on your Canadian costs: software, contractors' HST, rent, equipment. An agency with a mostly-American book files GST/HST returns that come back as refunds, and we usually elect quarterly filing so those refunds land as working capital instead of once a year.

Zero-rating is a claimed position, so keep the evidence: client addresses, contracts showing the non-resident recipient, and confirmation the client is not GST/HST-registered. The rest of the US relationship — paying American freelancers, W-9 versus W-8 collection, and whether a US-based employee creates state tax nexus — sits on our cross-border tax page for marketing agencies.

Media buys: agent or principal decides the HST

Media spend is the line where agencies remit tax on money that was never theirs — or fail to remit tax on money that was. The question is capacity: are you buying media as agent for the client, or buying it as principal and reselling it inside your service?

One platform-era trap: Google and Meta charge GST/HST to Canadian advertisers who have not entered a registration number in their billing profile — and tax collected under that simplified regime cannot be claimed as an input tax credit. The fix takes five minutes in each ad account. We check it during onboarding because we find money there more often than we should.

Launch-year losses are an asset with an expiry date

Most agencies burn cash for a year or two before retainers stack up, and those non-capital losses carry back three years and forward twenty. Used well, they refund tax from a founder's prior profitable corporation years — where it is the same corporation — or shelter the first real profit entirely. Used lazily, they expire or get trapped.

Two habits protect them. First, CCA is discretionary: in a loss year we often skip depreciation claims, because undepreciated capital cost never expires while losses eventually do. Second, ownership changes matter — an acquisition of control, say a majority sale to a partner or holdco reshuffle, restricts how losses can be used afterward, so we model the loss position before signatures, not after.

Source: CRA — GST/HST for businesses.