In this article
For a media agency pitch, the right agency shortlist contains three agencies, or four when you want a margin of safety or have a hard time excluding the fourth. This is not primarily a question of how much work your team can manage. It is a question of what is fair to the agencies you invite, and fairness at that stage is what makes the whole process defensible.
You are asking senior people to invest weeks of work. They will build strategy, allocate research budget, clear diaries, and prepare detailed financial proposals. The number on your shortlist determines the odds they face. Three agencies gives each a one-in-three chance. Four gives one in four. Below that band you are spending serious agency money on odds that do not justify it. Go above it, and agencies recalibrate. The quality of what you receive changes, and rarely in your favour.
How the funnel works before you reach the shortlist
A good selection process is not a single leap from the open market to three finalists. It moves through levels, each one narrowing deliberately.
At the very start, you should be willing to speak to the whole market. Not to involve everyone, but to avoid dismissing the one agency that could be genuinely right and would never have appeared on a standard long list. That agency is often a specialist independent rather than a network name. The openness at this stage is precisely what makes the later narrowing credible.
From there, one or more filtering rounds bring the field down. What gets weighed in those rounds: coverage of the markets that matter to your business, relevant category or channel experience, how the agency handles conflicting accounts in its portfolio, and how they approach transparency. On that last point the conversation should be open rather than a test. How does the agency think about it? How do they deal with clients who have specific requirements? What is their view? You can also state expectations explicitly in the brief during a later round. In practice there is a structured custom checklist, based on the needs of the client, behind this work; the aim here is to name the areas, not to reproduce the method.
The filtering rounds are where the agency evaluation criteria that predict a good partnership are applied most rigorously. That evaluation logic belongs there; this article is concerned with the number.
Why three, and why sometimes four
Three is the right number for a shortlist because each agency still faces odds that justify a full, professional response. The pitch becomes its own benchmark: with several agencies completing the same imposed format, you can read their strategic choices against each other in a way that is genuinely illuminating. With two agencies, that internal comparison barely functions. The evaluation technique itself is covered in the agency scoring and scorecard approach. One point worth noting here is that scoring differences between agencies begin to blur into noise the moment the list gets too long.
Four is the safer version of three, for a practical reason: a shortlist of three becomes thin the moment one agency withdraws. It happens. A conflict surfaces, a senior contact departs, a commercial disagreement in the early rounds makes it right for both sides to stop. Four preserves the structure even when one position falls away.
Your own team’s capacity is a real consideration, but it follows from the fairness logic rather than driving it. If your evaluation team is small, that is an argument for tightening the process and criteria, not for shortlisting two.
The size question, a concern to be tested, not a rule
A concern that surfaces often: a smaller advertiser worries about receiving adequate attention at a very large agency. A large advertiser worries about whether a smaller agency has the capacity and infrastructure for the account. Both concerns are legitimate. Both are frequently wrong.
They should be raised, discussed, and examined in the early filtering rounds rather than assumed. Taking the prejudice at face value is one of the more common ways that good agencies are filtered out for the wrong reason. A large network agency may have a dedicated unit well matched to a mid-size client. A fast-growing independent may have built precisely the technology stack and team structure that a large account requires. The question to ask is not “how big are they” but “how would they staff and run this account.” That question belongs in the conversation, not in the pre-screening.
What happens when the shortlist is too long
Agencies know, or work out, how many competitors they are facing. Above four or five, the calculation shifts. Senior practitioners who should be answering the brief give way to new business specialists whose job is to perform well under pitch conditions. The response becomes a presentation rather than a considered answer to your situation by the prospetive account team. Your own evaluation dilutes at the same time: with six agencies and a structured scorecard, the differences in scores compress and what looked like clear preference becomes statistical noise.
A tight shortlist signals that the homework was done. It tells the agencies on the list that they were chosen deliberately, that the odds are reasonable, and that their investment of time and professional attention is worth making. That signal matters. It affects what you receive.
The full context for running a fair and productive process, timeline, information packs, Q&A management, and how to keep the field level, is covered in the broader guidance on media agency selection criteria: what predicts a good partnership.
Moving from shortlist to negotiation
After the final pitch round, you move from three or four to one or two agencies for negotiation. Two is the stronger position and serious processes usually prefer it: the client retains competitive tension through the commercial rounds. The reasoning on why two in negotiation protects your interests belongs to the contract and fees discussion, not here.
One can be defensible when the gap after the final round is large enough that involving a second agency would genuinely waste their time. There is also a practical middle path: begin negotiations with one agency and bring a second in if the commercial conversations prove difficult. That option is worth preserving rather than closing off at the start.
A well-structured selection typically runs three to five months from first brief to appointment. Multi-market processes require more. The commercial negotiation needs room. A compressed timeline transfers leverage from the advertiser to the agency, which is rarely the intended outcome. If you are reviewing whether the current moment calls for a full pitch or a different intervention, the pitch, renegotiate or audit framework sets out the options.
The right agency shortlist length, three as a principle, four as a safeguard, is ultimately a decision that reflects respect for the agencies’ investment and protects the rigour of your own process. Get that number right and everything that follows is easier to defend.
Frequently asked questions
What is the ideal number of agencies to shortlist for a media pitch? Three is the ideal number. Each agency faces odds that justify a full, professional response, and the pitch functions as its own internal benchmark. Four is a sound alternative when you want a margin of safety in case one agency withdraws during the process. Fewer than three weakens the comparison; more than four tends to reduce the quality of responses and dilute your own evaluation.
Can you run a media agency pitch with only two agencies? It happens, and there can be sound reasons for it. But with two agencies the pitch loses its internal benchmark, and the client’s position narrows earlier than it needs to. The more common exception is at the negotiation stage rather than the pitch itself, where taking two agencies forward protects the advertiser’s position through to contract - and where starting with one and adding a second later remains an option.
How many agencies should be involved in the early filtering rounds? There is no fixed ceiling for the initial market review. The goal is to avoid dismissing the right agency simply because it was not on a standard list. In practice, early conversations or RFI responses may involve a broader set before one or two filtering rounds bring the field to a workable shortlist. The principle is that openness at the start is what makes the later narrowing defensible.
Does the size of my organisation affect how many agencies I should shortlist? The number of agencies on the shortlist should not change based on advertiser size. What size does affect is the profile of agencies worth considering. Concerns about a large advertiser being underserved by a small agency, or a smaller advertiser getting lost at a network, should be tested through direct conversation in the early rounds rather than used as a screening criterion. Both concerns are frequently wrong.
What are the signs that my shortlist is too long? When agencies sense they are one of five or more competitors, senior people tend to step back and new business specialists take over. The response becomes a performance optimised for pitch conditions rather than a genuine answer to your brief.
