How to Choose a Performance Marketing Agency: 12 Questions That Reveal the Good Ones
Summary
Choosing a performance marketing agency is hard because the thing you’re evaluating — whether they can actually generate profitable growth — isn’t visible until months after you’ve signed. Every agency shows impressive case studies. Every agency says they’re data-driven. The pitch deck tells you almost nothing.
What does tell you something is how an agency answers specific, uncomfortable questions about ownership, measurement, and process. This article gives you 12 of them, along with what a good answer sounds like and what should worry you. Written by an agency owner, which means the obvious bias disclosure applies — but the questions below are ones we’d want a prospective client to ask us.
Quick answer: The questions that reveal most are about ownership (do you own your ad accounts and data?), measurement (do they judge success on platform-reported ROAS or blended efficiency?), transparency (will you see the actual accounts, or only their dashboard?), and process (what specifically happens in month one?). Be wary of guaranteed results, agencies that own your accounts, reporting that never shows a bad week, and anyone who can’t explain how they’d measure incremental impact. Good agencies are specific, admit uncertainty, and are comfortable being audited.
The 12 questions
Ownership and access
1. “Will I own my ad accounts, or will you?”
Good answer: You own them. The agency gets access to your accounts. Worrying: The agency runs everything through their own accounts, or is vague about it.
This is the single most important question. If the agency owns the accounts, you lose your entire performance history, audience data, and learnings the day you leave — which makes leaving very expensive, which is sometimes the point.
2. “Will I have full, direct access to see everything?”
Good answer: Yes, admin access to your own accounts, whenever you want. Worrying: You only see their reporting dashboard.
An agency comfortable with you looking directly at the account is an agency with nothing to hide. One that mediates all visibility through their own reporting layer controls the narrative.
3. “Who owns the creative, landing pages, and data we build together?”
Good answer: You do, with clear handover. Worrying: Ambiguity, or assets living on agency-owned infrastructure.
Measurement
4. “How will you measure success — and what’s your view on platform-reported ROAS?”
Good answer: They immediately distinguish platform-reported numbers from blended efficiency (total revenue ÷ total ad spend), and explain that platforms over-claim and double-count. Worrying: They quote platform ROAS as the headline metric with no caveats.
This one question separates operators who understand modern attribution from those still reporting 2019-style numbers.
5. “How would you know if your work is actually incremental?”
Good answer: They mention incrementality testing, geo holdouts, or at minimum blended efficiency trends and new-customer metrics. Worrying: They don’t understand the question, or insist last-click attribution is sufficient.
6. “What will you do about our conversion tracking?”
Good answer: They want to audit it first, and mention server-side tracking (Conversions API / Enhanced Conversions) and event quality. Worrying: They assume it’s fine.
We’ve repeatedly found accounts where page views were configured as primary conversions — in one case inflating reported conversions from roughly 123 real leads to over 4,500. If an agency doesn’t audit tracking early, every number that follows is fiction.
Process and people
7. “What specifically happens in the first 30 days?”
Good answer: A concrete sequence — audit, tracking fixes, account restructure, creative plan — with deliverables. Worrying: Vague “onboarding and strategy” language.
8. “Who actually works on my account day to day?”
Good answer: Named people, with the senior person genuinely involved. Worrying: You’re sold by a senior team and served by a junior one you never meet.
9. “How often will creative be refreshed, and who produces it?”
Good answer: A specific cadence (monthly is a reasonable baseline) and clear ownership. Worrying: No plan — because with targeting now algorithmic, creative is the primary lever, and stale creative is the most common cause of decline.
Honesty signals
10. “Tell me about a client relationship that didn’t work, and why.”
Good answer: A specific, honest account with what they learned. Worrying: “We’ve never had one.” Every agency has. Claiming otherwise is either dishonesty or inexperience.
11. “What results can you guarantee?”
Good answer: None — and an explanation of why guarantees in performance marketing are a red flag, with a discussion of realistic ranges instead. Worrying: A specific guaranteed ROAS or lead volume. Nobody can guarantee auction outcomes; anyone who does is either naive or willing to mislead you.
12. “What would make you tell me not to spend more?”
Good answer: Clear conditions — break-even ROAS approached, saturation signals, tracking problems, or that the constraint is elsewhere (product, pricing, site). Worrying: They can’t imagine recommending less spend. An agency paid on percentage-of-spend has an obvious incentive here; you want one willing to say “stop.”
Structural things to check
Beyond the questions:
| Check | Why |
|---|---|
| Fee structure | Percentage-of-spend creates incentive to increase spend. Flat retainer or hybrid aligns better. Ask how they handle the conflict. |
| Contract length and exit terms | Long lock-ins with painful exits suggest confidence in the contract, not the work. |
| Relevant experience | Have they run your model (e-commerce vs lead gen) and your market? Regional dynamics matter — GCC, for instance, has payment and COD realities most agencies don’t know. |
| Reporting cadence and format | Do you get analysis, or a dashboard screenshot? |
Red flags worth walking away from
- Guaranteed results — impossible in an auction environment
- Agency-owned ad accounts — makes leaving costly by design
- Reporting that’s never bad — real accounts have bad weeks; reports that never show one are curated
- Only platform-reported metrics — indicates outdated measurement thinking
- No tracking audit — everything downstream is unreliable
- Pressure to sign fast — good agencies have pipeline and don’t need to rush you
What we’d recommend doing next
- Ask questions 1, 4, and 12 first — ownership, measurement, and willingness to recommend less spend. They filter fastest.
- Request direct account access as a condition, not a favor.
- Ask for a tracking audit before any spend commitment — if what’s being measured is wrong, nothing else matters.
- Talk to a current client, not just read a case study.
If you’d like a second opinion on your current setup — or want to ask us these questions directly — book a $100 audit. We’ll review your accounts and tracking and tell you honestly what we find, including if the problem isn’t your advertising.
See also our companion piece on in-house vs agency vs freelancer, and our Performance Marketing service.
Frequently asked questions
What questions should I ask a performance marketing agency?
The most revealing are about ownership (“will I own my ad accounts?”), measurement (“how do you view platform-reported ROAS versus blended efficiency?”), incrementality (“how would you know your work is actually incremental?”), process (“what specifically happens in the first 30 days?”), and honesty (“what would make you tell me to spend less?”). Vague or defensive answers to these matter more than a polished pitch deck.
Should my agency own my ad accounts?
No. You should own your ad accounts, with the agency given access. If the agency owns them, you lose your performance history, audience data, and accumulated learnings when the relationship ends — which makes switching expensive by design. This is the single most important structural question to settle before signing.
Can a marketing agency guarantee results?
No, and a guarantee is a red flag. Performance marketing operates in real-time auctions influenced by competitors, seasonality, and platform changes that no agency controls. Good agencies discuss realistic ranges based on your margins and market rather than guaranteeing a specific ROAS or lead volume.
What are red flags when hiring a marketing agency?
Guaranteed results, agency-owned ad accounts, reporting that never shows a bad week, reliance solely on platform-reported metrics, no interest in auditing your conversion tracking, and pressure to sign quickly. Percentage-of-spend fee structures also warrant a direct conversation about how they handle the incentive to increase spend.
How do I know if my agency’s reporting is honest?
Ask for direct admin access to your own ad accounts and compare what you see against their reports. Also check whether they distinguish platform-reported ROAS from blended efficiency (total revenue ÷ total ad spend) — platforms systematically over-claim and double-count conversions, so reports that only quote platform numbers overstate results even without intent to mislead.
About Pixel Movers: We run performance marketing for brands across UAE, KSA, Pakistan, US, UK, and Canada, managing $2M+ in annual ad spend. Clients own their accounts and data, and we report on blended efficiency rather than platform-reported numbers. Recent work includes SerMobile (11× ROAS) and Grace Hospitality (+127% direct bookings). Learn more about us →