Who Benefits From the Buy? Why Media Transparency Matters

Clear agency economics help marketing teams make faster, better decisions.

Most conversations about media transparency start after trust has already taken a hit.

That’s too late.

Transparency matters earlier, when an agency recommends where a client’s money should go—because a media recommendation is never just a media recommendation. Behind it are considerations like platform fees, data costs, preferred partnerships, volume benefits, affiliated companies and agency-controlled inventory.

None of those are automatically a problem. But they can create incentives. And if those incentives shape recommendations, clients should know about them.

Recent industry headlines have shown that agency trading practices are under scrutiny. But the questions raised (who benefits from a media transaction, how agencies are compensated and what clients should be able to see) have been around for years.

ANA’s 2016 transparency study examined rebates and other non-transparent media-buying practices, underscoring that governance questions are not new.

That matters even more now. Media moves faster than most governance processes do. Automated buying can redirect dollars in minutes. AI can influence targeting, forecasting and optimization. Major platforms operate inside their own ecosystems, each with different rules, data and levels of visibility.

In that environment, transparency becomes a performance lever. The clearer teams are about how decisions get made, the faster they can make better ones.

Agencies should make money. Healthy agency economics pay for experienced people, useful technology and the ability to respond when a campaign needs attention.

But it’s important to pay attention to a simple question:

Does the client understand how the agency makes money and how that potentially influences the advice they’re getting?

Most clients can see obvious compensation: a retainer, project fee, commission or percentage of spend. The less obvious economics often surround the media transaction itself.

An agency may receive rebates or other value from a media supplier based on buying activity. That value might come as cash, inventory credits, discounts or services. An agency may also generate revenue through data, technology or an affiliated company.

In a principal transaction, the agency purchases or controls media inventory on its own account and resells it to the client at an agreed price. In that moment, the agency isn’t only acting as the client’s buying representative. It’s also the seller.

That can create real benefits: lower pricing, better access or cost certainty. It can also create a strong financial incentive to recommend one option over another. Both things can be true. And that’s exactly why clarity matters.

ANA research released in 2026 found that 58% of surveyed marketers had used principal media in the prior year, while only 57% said their companies had guidelines governing it.

At the same time, 90% said their leading concern was whether a principal media recommendation was truly in their best interest. Yet 76% cited reduced cost as the model’s primary benefit.

The takeaway is that adoption is moving faster than oversight. The model may create real value, but governance has to keep pace.

When the economics behind a recommendation aren’t clear, every change to the media plan creates more questions:

Is this budget shift being driven by the evidence and do we understand any commercial incentives attached to it?

Sometimes suspicion is completely fair, and sometimes it isn’t warranted—a recommendation may be exactly right. But if the client has to stop and question the motive behind every optimization, the team loses time. And in media, timing matters.

Clear roles and incentives move friction out of the way so teams can focus on the questions that actually improve performance:

Who are we trying to reach? What outcome matters? What are the tradeoffs? What is the evidence telling us now?

A media plan should be treated as a starting hypothesis that evolves with the evidence. When optimization is visible, a client can understand what changed, what signal triggered the move and how the new allocation connects to the business goal. That creates a faster learning loop without a client needing to give up control.

More information does not automatically mean more clarity. Useful transparency gives leaders decision-grade clarity: enough information to understand economics, challenge rationale and make a sound decision.

A marketing leader should be able to understand four things:

1. What role is the agency playing?
   Is it acting as the client’s agent? Selling inventory as a principal? Recommending an offering from an affiliated business? The answer may change from one buy or channel to another, but it shouldn’t be a surprise.
2. How is the agency being compensated?
   The full picture should include material value beyond the stated fee: rebates, credits, markups, data fees, technology charges and benefits flowing through related companies. Those economics need clear contractual treatment
3. Why is this recommendation right for the business?
   The recommendation should connect the inventory to the audience, the business objective and the measurement plan. A low CPM is not a strategy. Cheap media gets expensive fast when it reaches the wrong people or when no one can connect it to an outcome that matters.
4. What does the evidence say after launch?
   Clients need appropriate access to the information required to understand what happened: contracts, invoices, delivery data and performance reporting where applicable. They should also be able to see why the team moved money, changed a placement or stopped doing something that wasn’t working. Reporting should make the decision logic visible without overwhelming the people using it.

Technology can identify audiences, forecast outcomes and optimize bids at a speed no human team can match. What it can’t do is decide which commercial tradeoffs are acceptable for a particular client. And no platform, model or targeting tool should get to grade its own homework.

A human decision-maker should be able to explain, in plain language, why a recommendation makes sense. Different buying options come with different tradeoffs—price, access, scale, relevance and data visibility, for example. Those tradeoffs belong in the recommendation, not buried in a performance recap after the money has been spent.

In my experience, clarity makes the strategy better because it changes the conversation. Once a client understands why a channel is being recommended, how the agency is compensated and how success will be judged, everyone can focus on the actual decision. Sometimes the recommendation holds. Sometimes the plan changes. Either is better than leaving the motive unspoken.

Clients share responsibility for transparency because they help set the rules of the relationship. The ANA’s work on media transparency identified breakdowns on both sides, including weak contract oversight by advertisers.

You can’t outsource governance and then be surprised when no one governs. Contracts should make the rules clear before the buying begins.

When does principal media require approval? How are rebates and credits treated? What data can the client access? How are affiliated services disclosed? What audit rights apply?

Marketing, procurement and legal should agree on the answers before the first optimization creates pressure to decide quickly. When the rules are understood, teams don’t have to renegotiate the relationship every time the plan changes.

Clients also have to be realistic about what good media stewardship costs.

If a marketer expects senior attention, sophisticated technology, rapid optimization and full accountability while driving the visible agency fee as close to zero as possible, the economics don’t disappear—they show up somewhere else. That never excuses nondisclosure, but transparency works best when the commercial model itself is sustainable.

Not every transparency demand improves a decision. Knowing every intermediary’s exact margin on every impression may be impossible, contractually restricted or irrelevant to the question at hand. Reports no one reads add volume without improving governance.

A better standard is:

Can the marketing leader understand who benefits from the recommendation and how?

Can they see the meaningful alternatives?

Can they knowingly approve a material conflict?

Can they evaluate whether the recommendation delivered what it promised?

That’s decision-grade transparency.

Marketing leaders don’t need to become media traders. They do need enough visibility to challenge the system intelligently. And agencies should be able to earn a reasonable margin without making clients guess how that margin might affect the plan.

When incentives and decision logic are clear, something useful happens:

• Teams stop spending time debating motive.
• They start spending time improving the work.
• They learn faster. They act faster. And they don’t have to renegotiate trust every time the plan changes.

Media transparency strengthens governance, but its business value goes further: faster decisions, cleaner learning and stronger performance.