How do you select and manage a media agency in North America?

Selecting a media agency in North America almost always means one review covering two countries. For most international advertisers, the right call is to appoint a single agency across the United States and Canada. The mistake is writing a single-market contract to govern it.

The two markets differ in measurement standards, in category rules that are at times directly opposed, and in the existence of a distinct second-language market inside Canada. A North American appointment succeeds when the review is regional and the contract is national, twice. This article walks through what to test in the pitch, what the contract must pin down, and how to manage the relationship after appointment.

For a step-by-step walkthrough of how a formal review is structured, the guide The media agency selection process, step by step covers the full methodology; the sections below focus on what makes North America specifically different.

What makes selecting a media agency in North America different

North America is not one market with a shared media infrastructure. It is two countries with different currencies, different regulators, different measurement systems, and a Canadian market that contains a legally distinct French-language environment in Quebec. A regional pitch is usually led from a US head office. That means Canadian capability is structurally at risk of being underweighted in the room.

The consolidation of the holding-company landscape adds another layer of complexity. The completion of the Omnicom and Interpublic merger in November 2025 concentrated the regional market further, with the same holding companies operating on both sides of the border. That matters for transparency questions, because rebate and principal-trading disclosures must be verified per country, not per region.

For broader context on how the two markets are structured, the Advertising in North America: the media landscape overview covers the key differences between the US and Canadian media environments in detail.

Four areas to test North American agency candidates on

A North American pitch deserves a more structured evaluation than a single-market review. Candidates should be tested specifically on four areas.

First: genuine capability in both countries, and in Quebec. Ask every candidate for its Canadian team and references separately from its US credentials. Ask specifically for its Quebec team, its Quebec references, and its compliance process for that market. Quebec requires French-language advertising, prohibits advertising to children under 13, and enforces its own privacy law. The question to put to candidates is not whether they have a presence in Montreal, but how regional strategy translates into two national plans rather than one plan applied twice.

Second: agent versus principal, regionally. The advertiser-side record in the United States documents pervasive rebates, programmatic waste and the growth of principal trading. The same holding companies operate in Canada. Ask every candidate, in writing, what it or its group sells as principal in each country, how rebates and incentives are treated and returned per country, and whether it accepts audit rights that reach group level across the region. Transparency and governance in media buying is a standing issue in this market. A regional pitch is the moment to establish the rules.

Third: measurement discipline per country. In the United States, Nielsen is the dominant national TV currency and certified alternatives exist, making the basis a per-deal negotiation. In Canada, Numeris measures TV and radio, and its cross-platform VAM launched in late 2025 but is not yet an established trading currency. Ask candidates which basis each performance claim rests on in each country, how cross-border campaigns are reported without blending incomparable numbers, and whether digital figures are platform-reported, third-party-measured or modelled.

Fourth: compliance capability on both sides of the border. The rules diverge sharply. Direct-to-consumer prescription drug advertising is legal in the United States and prohibited in Canada. Cannabis promotion is severely restricted in Canada. Gambling advertising is regulated state by state and province by province. The United States has a patchwork of state privacy laws while Canada layers federal law with Quebec’s stricter regime. Meta has blocked news links for Canadian users since 2023, which changes news-adjacency planning in Canada only. Ask every candidate who owns compliance per country and per category, with documented examples rather than general assurances.

If your agency review spans multiple regions beyond North America, Multi-market media agency selection: one review across markets addresses how to structure a single process across geographically and legally distinct markets.

What a North American media agency contract must pin down

A regional appointment needs two national schedules sitting under one overarching agreement. Four things must be specified at country level, not averaged across the region.

Agent-versus-principal declarations, rebate and incentive treatment, and audit rights must be stated separately for the United States and Canada, with audit rights reaching group level in both countries. A regional clause that does not distinguish between markets will not hold in practice.

The measurement basis must be defined per country and per deal, with cross-border reporting rules that keep the two markets’ figures separate and labelled. A blended North American performance number is not a reliable management tool.

Named accountability for Quebec must be written into the agreement: language compliance, the prohibition on advertising to children under 13, and consent requirements in targeting and CRM-driven media. This should not be left to internal agency governance to sort out after signature.

Pricing benchmarks must apply per market, not as a regional average. A blended North American price hides more than it reveals. Benchmarks and performance yardsticks should be set per country, with the measurement bases that underpin them written into the contract before it is signed.

Managing a North American agency relationship after appointment

The first task after appointment is agreeing performance yardsticks per country before the relationship is formally under way, with the measurement bases that support those yardsticks written into the agreement. Leave this to the first quarterly review and you will almost always weaken the advertiser’s position.

Principal-position and rebate disclosures should be reviewed per country at each major buying cycle. The Quebec leg of the relationship deserves its own review cadence, given the distinct regulatory and language requirements that apply there.

Ongoing reviews should recognise outperformance as readily as they identify shortfalls. An agency that receives only corrective feedback has less commercial incentive to bring its best thinking to the relationship. A well-managed North American agency relationship is one where both sides have a clear view of what good looks like in each country.

Running a North American pitch with independent support

For advertisers planning a media agency selection across North America, Vendor-MGT runs agency selections and pitches independently, on the advertiser’s side. A well-structured process in this market typically runs ten to sixteen weeks from the decision to review to contract signature, with the agency transition adding a further four to eight weeks.

The Pitch describes how Vendor-MGT structures and runs that process, and what advertisers can expect at each stage.

Frequently asked questions

Should you appoint one media agency for the United States and Canada? For most international advertisers, a single regional appointment is the right approach. The risk is not in the appointment itself but in the contract: a single-market agreement applied across both countries will leave transparency, measurement and compliance gaps that are difficult to close after the relationship is under way. The recommendation is one regional review with two national contracts, or two national schedules under one regional agreement, each specifying the rules that apply in that country.

What should a North American media agency contract cover? The contract should specify agent-versus-principal declarations, rebate and incentive treatment, and audit rights separately for the United States and Canada, with audit rights reaching group level. It should define the measurement basis per country and per deal, with cross-border reporting rules that keep the two markets’ figures separate. It should name accountability for Quebec specifically, covering language compliance, the prohibition on advertising to children under 13, and consent requirements. And it should set pricing benchmarks per market rather than using a blended regional figure.

What should I test North American agency candidates on during a pitch? Test candidates on four things: genuine capability in both countries and specifically in Quebec, including compliance with French-language and under-13 rules; transparency on principal trading, rebates and incentives per country; measurement discipline, including which currency or standard underpins each performance claim in each market; and compliance capability per country and per category, with documented examples covering areas such as prescription drug advertising, cannabis, gambling and privacy law.