How to Choose a Transparent Media Agency: The Four Questions to Ask First

The questions that would tell a client the most about us are the ones we almost never get asked.

I have sat on the receiving end of a great many agency evaluations, and what strikes me every time is how rarely anyone asks the questions that would actually tell them something. We get asked about case studies, team structure, reporting cadence and platform certifications. We get asked what makes us different, which is really an invitation to recite a positioning statement. What almost nobody asks is how we make money.

Most advice on how to choose a paid media agency concentrates on the meeting, on how to brief it, how to score it and what to watch for in the room. I would spend that attention elsewhere, because the part worth knowing is decided before anyone presents and it does not change afterwards. Gartner's 2025 CMO Spend Survey puts paid media at 30.6% of the average marketing budget, or 2.4% of total company revenue, which is a lot of money to hand over on the strength of a good meeting.

So here are the four questions I would want a client to send us in writing before we ever presented, and to send to everyone else on their list at the same time. If the answers exist, they take about ten minutes to write out, and the agencies that struggle are usually not stalling so much as discovering they have never had to put it in writing before. I should say where I stand, because it colors all four: we built Other.™ fee-based, with no commissions and no rebates, so I am describing a structure I already chose, which is exactly why you should hold us to these too.

The short answer: to choose a paid media agency well, ask four questions in writing before the pitch. Does it mark up media, does it take rebates or partner incentives, does it own anything it recommends, and will it tie part of its fee to a business outcome? Pay as much attention to how fast and how specific each reply is as to what it says.

Do You Mark Up Any Media, and Will You Show Me the Vendor Invoices?

A markup is the difference between what an agency pays a platform and what it bills you, and I would lead with it because it is the only one of the four a client can verify independently afterwards. The other three depend on an agency telling you the truth, whereas this one can be checked against paperwork.

The question is not really whether an agency marks up media, because plenty do and disclose it, and a transparent markup is a pricing choice rather than a deception. What it tests is whether the number is knowable at all. An agency that bills a single blended figure covering media and management has made its own margin unauditable, and in my experience that is a decision rather than an accident.

A good answer is short and specific. Either there is no markup and the agency will show you raw vendor invoices monthly, or there is one, it is a stated percentage, and here is what it covers, and both of those are workable. The answer that tells you something is the third kind, and I have heard all its variants: a paragraph about how the industry works, a suggestion that this is really best discussed live, or an offer of a "transparent partnership model" that never resolves into a number.

If an agency will not put its answer in writing, you already have the information you were looking for, and you have it before spending a quarter finding out the expensive way.

Do You Receive Rebates or Partner Incentives From Vendors You Recommend?

Rebates are payments or credits an agency earns from a vendor for hitting volume commitments, and partner-program incentives are the same idea wearing a friendlier name, arriving as credits, co-op funds, training, or referred leads. There is nothing illegal or unusual about either. The question is whether they are disclosed and who keeps them.

This one is worth asking carefully because the honest answer is often yes. Most agencies of any scale sit in platform partner programs, and there are real benefits in that for clients, including support and beta access. What you want is an agency that can tell you, without pausing to work out how the answer will sound, exactly which vendors it earns anything from and where that money ends up.

The reason it matters is that the bias never shows up as a single bad recommendation. It shows up as a pattern you would struggle to prove, where the same vendors appear on every plan, a proven alternative somehow never gets tested, and the media mix ends up narrower than your audience. I went through the mechanics in detail in the hidden economics of agency pricing, and it is worth reading before you ask this one, because knowing how the money actually moves makes a vague answer much easier to spot.

The follow-up is the one that actually settles it, and it is the one I would want asked of us: if a rebate is earned on your spend, does it come back to you, and where exactly would you see it?

Do You or Your Holding Company Own Anything You Are Recommending I Buy?

This is the question fewest brands ask and the one that moves the most money, because when an agency recommends a demand-side platform (DSP), a measurement tool, or inventory that its own group owns, you are paying for the recommendation and then paying again for the thing recommended.

The structure is what makes it hard to see. An agency acting on your behalf is buying as your agent, but an agency buying media for its own account and reselling it to you is acting as a principal, and those are different relationships with different duties even when the invoice looks identical. The ANA's programmatic transparency work found up to $20 billion of an $88 billion open web market recoverable, with made-for-advertising sites alone absorbing 15% of ad spend, and a meaningful part of the rest sits inside arrangements clients never knew were arrangements.

The thing to listen for is whether the agency volunteers the ownership before being asked twice. There is nothing wrong with recommending something you own, provided you say so and provided the client can decline it without the plan falling apart. What is not defensible is a client finding out later, usually from somebody else, that the tool they have been funding belongs to the group that recommended it.

Ask for the answer to cover the holding company and any affiliate, not just the operating agency, because that distinction is exactly where a technically true answer tends to hide.

Would You Tie Part of Your Fee to a Business Outcome?

The first three questions are about what an agency will disclose. This one is about what it is willing to carry, and it is the only one where the reaction matters more than the answer.

You should not expect every agency to say yes, and I would be wary of one that says yes too quickly. Outcome-based fees need clean attribution, a sales process the agency can genuinely influence, and enough trust on both sides to survive a bad quarter, so a thoughtful agency will sometimes explain why it would not work on your account yet. That answer is fine, and frequently the correct one. Your agency's business model only has to be defensible, not heroic.

What the question really tests is whether an agency is prepared to have the conversation at all. An agency paid purely as a percentage of your spend earns more when your budget grows, whether or not the growth was the right call, and while that does not make anyone dishonest, it does mean the person advising you to spend more is paid more when you agree. Being willing to discuss an alternative structure tells you they know that and are not defensive about it. The version worth proposing ties the fee to cost per booked customer rather than cost per lead, because the second number can improve while your revenue does not.

If the answer is a flat no with no reasoning, you have learned something about how the relationship will handle any other uncomfortable conversation.

What to Do With the Four Answers

The questions to ask a paid media agency are only half of it, because how you ask them decides what you learn. Send all four in one email, to every agency on your list, and ask for written replies before you schedule anything. The uniformity is deliberate, because it lets you compare answers to the same question rather than impressions of four different meetings.

Then read the replies for two things, of which the second matters more. Content is the straightforward one, while latency is how long the answer took and how much procedural throat-clearing arrived before any substance. An agency that has designed a clean commercial model can answer in a day, because the answers are a consequence of how it is built rather than something it has to compose. An agency that needs a week and a call is not necessarily hiding anything, but it does tell you the questions are unfamiliar there.

Send them to your current agency too. Incumbents rarely get asked these questions after the original pitch, contracts get renewed on relationship and inertia, and the answers you get back are usually more interesting than anything a new agency will tell you.

The bottom line: by the time you are in the room, you are evaluating a performance. Ask these four before the room exists and you are evaluating the business instead, ours included.

If you are weighing up a new paid media partner, or wondering what your current one would say to these four, we're here to help.

Frequently Asked Questions

How much does a paid media agency cost, and what are the fee models?

There is no single number, because paid media agency pricing runs on four structures: a percentage of ad spend, a flat monthly retainer, a performance or outcome-based fee, or a hybrid of a retainer plus an incentive. The model matters more than the rate, since it decides what the agency is rewarded for recommending to you.

How long before a paid media agency shows results?

About ninety days is a fair first read on performance. Account structure, conversion tracking and audience setup should all visibly improve inside the first month, while compounding gains take longer because the algorithms need conversion volume and creative testing needs cycles to produce a winner.

When should you switch your paid media agency?

Switch on structural triggers rather than a single bad month. Opaque reporting, a refusal to show vendor invoices, flat performance against a rising category benchmark, and turnover on your account team are the four signals that tell you when to switch, and there is usually a window in the year when switching costs least.

Should you hire a specialist or an integrated media agency?

A specialist paid search or paid social agency wins when one channel drives most of your volume and depth in that channel matters more than breadth across the rest. An integrated media agency, which is what full-service ought to mean in practice, wins when your budget spans several channels, because the gains then come from how the budget is allocated across the mix and from planning the channels against one another rather than from any single channel being run slightly better. What you are looking for is integration that has not been bought at the cost of performance depth, so ask whoever you are considering to show you the cross-channel plan and the in-platform work underneath it in the same conversation.

Should you run paid media in-house or with an agency?

In-house works once spend is high enough to fund senior strategy, buying, creative and analytics talent, and your channel mix is stable enough to keep them busy. An agency wins on cross-channel breadth, benchmark visibility across many accounts, and access to specialists you could not justify hiring full time.

How do you run a paid media agency trial or pilot?

Give it four things: a fixed scope of channels and budget, success metrics agreed in writing before launch, a set timeframe of roughly ninety days, and an exit clause. The exit clause is what makes the rest of it honest, because without one a pilot is simply a contract with a friendlier name.

Sources: Gartner, ANA.