The 18 questions to ask a marketing agency before you sign

Why the pre-call questions beat the deck

Agency decks are commodities: the same case-study format, the same logos wall, the same funnel diagram. The call is where the truth leaks out – but only if you ask questions the sales playbook hasn't rehearsed. This sheet is written for founders doing their own vetting; if you're a marketing leader running a formal process, the CMO agency evaluation checklist is the deeper, scored version of this exercise.

One rule before the list: ask everything below of every agency you shortlist, and write the answers down. The comparison across agencies is where the signal lives.

Budget 45 minutes per call, and keep the final ten for their questions to you. The best firms will use that time to probe your margins, capacity and decision speed; the worst will use it to close.

Proof and past work (Q1–4)

• 1. Show me a brand like mine you've grown – category, price point, stage. Adjacent counts; "we've done everything" doesn't.
• 2. What were the actual numbers – before, after, and over what period? Real cases have dates and baselines, not just multiples.
• 3. Can I speak to one current client and one former client? The former client is the revealing one. Refusal is an answer.
• 4. Which client did you fail with, and why? Every agency has failures. An agency that can't name one is either new or lying, and both are useful to know.

What good sounds like: a named brand in an adjacent category, numbers with a start date and a baseline, and a failure story with a specific lesson attached. What bad sounds like: logo walls, multiples with no timeframe ("we 5×'d a brand"), and case studies where the headline metric is engagement rather than revenue. Note which agencies volunteer caveats unprompted – those are the ones that will report honestly later.

The people on your account (Q5–8)

• 5. Who exactly will work on my account, and how senior are they? The pitch team and the delivery team are often different people. Ask for names.
• 6. How many accounts does that person handle? A buyer running fifteen accounts gives you two hours a week. The maths is not negotiable.
• 7. What happens when that person quits? Agencies have attrition like everyone else; you're listening for a handover process, not a promise it won't happen.
• 8. Who makes creative, and how much of it per month? Creative volume is the real constraint on paid social performance in 2026; vague answers here predict stale accounts later.

This is the section where pitches collapse. The industry's quiet problem is load – talented buyers made mediocre by fifteen-account rosters – so if the agency won't name your team on the call, get the names in writing before signing, and treat a substitution between pitch and kickoff as grounds to reopen the conversation.

Money and contract (Q9–12)

• 9. What's the pricing structure – and what's not included? The add-ons (landing pages, extra channels, creative beyond the quota) are where budgets die. Market context on ranges is in our retainer cost guide.
• 10. What's the minimum term, and the notice period? Long lock-ins with slow notice periods shift all the risk to you.
• 11. Do you earn anything I can't see – media markups, tool commissions, referral fees? You want the incentives on the table.
• 12. What happens to pricing when my spend doubles? Better to negotiate the scaling curve now than at renewal.

You're not hunting for the cheapest quote here; you're mapping incentives. An agency earning a media markup you can't see will always want spend higher. An agency with a fair, visible fee and a written scaling clause has the same interest you do: make the spend work, then grow it.

Reporting, access and exit (Q13–18)

• 13. Do I own my ad accounts, pixel and data? The only acceptable answer is yes, in writing. Agency-owned accounts are hostage situations.
• 14. Show me an actual client report. You're looking for delivered revenue, new-customer CAC and a next-actions section – not screenshot ROAS. Why the two diverge is explained in COD, returns and real ROAS.
• 15. How often do we talk, and to whom? Cadence and seniority of the person in the room.
• 16. What do you need from my side to succeed? Good agencies have a demanding list – approvals, creative inputs, stock visibility. "Nothing, we handle everything" is a red flag.
• 17. What would make you fire me as a client? Agencies with standards have an answer.
• 18. If this isn't working at month three, what happens? You're listening for kill criteria and an exit plan, not reassurance.

Questions 16 and 17 look soft but do the most work. Agencies with standards answer both crisply, because they've fired clients and been fired, and they know exactly which conditions make an engagement succeed. Agencies running on volume have never thought about either – and it shows in the pause.

Reading the answers

Score the pattern, not the individual answers. Good signs: specific numbers with dates, named people, comfort saying "that depends" followed by what it depends on, and at least one moment where they told you something that made the sale harder. Bad signs: guaranteed outcomes, reluctance on references, vagueness about who does the work, and pricing that only makes sense if you don't ask question 9. We've catalogued the disqualifiers separately in marketing agency red flags.

And flip the lens once before deciding: the best agencies are interviewing you too. If nobody on their side asked hard questions about your margins, stock and goals, that's your answer.

Finally, sleep on it. Agencies that pressure you to sign in the meeting – founder-discount-expires-Friday theatre – have just shown you how they'll treat you under pressure. The good ones expect you to compare notes and take a week.