How to Choose a Google Ads Agency: 5 Criteria That Protect Your Budget
Every agency promises ROI, so promises can't be your filter. Vet the structure instead: who owns the account, how the agency gets paid, and whether its method survives inspection.
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The Short Answer: Judge Incentives, Not Promises
By img média · [CONTENT NEEDED: date]
To choose a Google Ads agency, verify five things before you sign: it specializes in Google Ads rather than treating it as one of ten services, you own the ad account and pay Google directly, the pricing is a flat retainer rather than a percent of your spend, it documents a named management methodology you can inspect, and it fixes your conversion tracking before scaling budget. Get those five right and most of the risk disappears.
Why claims can't be your filter
Every agency promises ROI. Every agency calls itself a team of experts. So those words tell you nothing, because the agency that drains your budget says them in exactly the same breath as the one that grows it. If a claim can't separate the two, it isn't a filter.
Structure can. How an agency is built decides how it behaves long after the sales call ends. Who owns the account, how the agency gets paid, whether its method survives inspection: these are facts you can check, not feelings you have to trust. They predict performance because they shape incentives, and incentives outlast enthusiasm.
The five criteria below are the structure worth checking. Read them in order, because they aren't equal. Two of them are contractual and hard to reverse once you've signed, so you eliminate on those first.
- Specialization. A pure-play Google Ads shop lives inside Search, Performance Max, Demand Gen, and target ROAS bidding every day. A generalist running ten services treats your account as one line on a long invoice.
- Account ownership. The ad account should be in your name, your click costs paid to Google directly, and your campaign history yours to keep if you ever leave.
- Pricing model. A flat retainer decouples the agency's revenue from your media budget. A percent-of-spend model rewards the agency for spending more of your money, whether or not it works.
- Named methodology. "Continuous optimization" is not a method. A real one has named stages, defined tactics, and a cadence you can ask to see before you commit.
- Tracking first. Conversion tracking (GA4, GTM, Enhanced Conversions) has to be verified before budget scales, or you're scaling spend against numbers you can't trust.
Claims are noise. Structure is the signal. Judge the incentives an agency is built around, not the outcomes it promises.
This guide was written by a current Google Partner agency that publishes its methodology (MaxV™) and runs the flat-retainer, no-contract model it tells you to demand. That's deliberate. The fairest test of any framework is whether the people sharing it pass it too, so apply every criterion below to us as readily as you apply it to anyone else. The five-criteria framework that follows breaks each point into a plain-language test you can run on your first call.
Five criteria that protect your budget
Account ownership
Ask: is the ad account in my company's name, and do I pay Google directly? If the answer is no, your history can walk out the door when you leave. Settle this first, because it is contractual and hard to reverse.
Pricing model
Ask: is the fee a flat retainer, or a percentage of what I spend? A percent-of-spend model rewards bigger budgets, not better results. Decide this second, because it sets the agency's incentives for the whole relationship.
Specialization depth
Ask: can they speak fluently about Search, Performance Max, Demand Gen, and target ROAS? A pure-play Google Ads team lives in the platform every day. Vagueness here is your signal to keep looking.
A named methodology
Ask: what is your method called, and can you show me its stages? "Continuous optimization" is not a method. A documented approach you can audit, like MaxV™, separates a real process from a promise.
Measurement before money
Ask: will you verify my conversion tracking before scaling spend? Tracking that misfires turns every dollar into a guess. The right answer is to check GA4 and tagging first, then grow the budget.
Run criterion 5 on your own account
The fastest way to apply this framework is a live screen-share of your account: tracking check, wasted-spend review, no minimum spend, and you keep your account either way. Get my free consultation.
When Google Ads is the growth lever, "360° agency" is a warning label
You own the account, and you pay Google directly
This is the one mistake you cannot undo. When an agency holds the account, it holds your data, your campaign history, your Quality Score, and your exit. Apply three plain tests before you sign, then read the full clause-by-clause checklist in what to demand in your agency contract.
Test 1: The account is in your name
Open the account and check whose Google login owns it. If it lives inside the agency's account, you do not own it.
Test 2: You pay Google directly
Click costs should hit your card from Google, not get bundled into one invoice from the agency. Bundled billing hides what you actually spend on media.
Test 3: Your history survives the exit
If you leave, the keywords, conversion data, and learning that took months to build should stay with you. Years of Quality Score should not walk out the door.
No contract is the structural proof
An agency that expects to be judged month by month does not need to lock you in. IMG Media runs flat-retainer, no-contract terms, and applies this same test to itself.
Why this one is non-negotiable
Pricing and ownership are contractual and irreversible. Eliminate any agency that fails these tests before you weigh anything else.
A flat retainer means the only way to keep you is to perform
A percent-of-spend agency earns more every time your budget grows, whether or not those dollars turn into customers. A flat retainer breaks that link: the fee stays the same as your spend rises, so the agency only wins by making your account work. For full transparency, this is the standard we hold ourselves to. IMG Media runs the flat-retainer, no-contract model this guide tells you to demand of any agency, including us. Want the math behind each model? See flat retainer vs. percent-of-spend pricing, the full breakdown.
You can inspect a real method, not just hear about it
"We optimize continuously" is a vibe, not a method. A real method has named stages, defined tactics, and a cadence you can hold the agency to. Ask to see it written down before you sign.
Named stages, not slogans
A documented method (IMG Media's is MaxV™) lays out each stage by name, so you know what happens and when.
Defined tactics you can name
Search, Performance Max, Demand Gen, tROAS bidding, and landing-page work on paid traffic. Specific levers, not "we run ads".
A cadence you can hold them to
A method sets a rhythm for review and iteration. Ask how often the account is touched and what changes between cycles.
Cost per qualified lead down 39%
A documented method is what produced Comairco's drop in cost per qualified lead. Verified client outcome.
ROAS up over 300%, revenue up 25%
Beautysense grew ROAS by more than 300%. Hitchweb lifted revenue 25% year over year. Both named, both verified.
You can spot wasted spend before you ever sign
Four signals tell you money is already leaking. Conversion tracking was never verified before spend started (no GA4, GTM, or Enhanced Conversions check). Reports show clicks and impressions but never cost per qualified lead. The agency dodges sharing its screen on the live account. Broad match runs unmanaged. The only way to know for sure is a live look inside your account, which is exactly what the free consultation delivers: a screen-share audit with a tracking check, garbage-spend verification, and an alignment review, no minimum spend. Want the full self-check first? Here is how to audit your account for wasted spend.
10 questions to ask before you sign
Who owns the account?
The ad account should be in your name, and the click costs should be paid to Google directly. If the answer is fuzzy, your history may walk out the door when you leave.
How do you bill, retainer or percent of spend?
A flat retainer keeps the agency's pay separate from your media budget. A percent of spend rewards spending more, not earning more.
What is your contract term?
Ask whether you can leave at any time. A no-contract model is a sign the agency expects to keep you with results, not a clause.
Show me your methodology document.
A named, written method survives inspection. "Continuous optimization" does not. Ask to see the stages and the cadence on paper.
Which campaign types will you run, and why?
Expect a clear reason for Search, Performance Max or Demand Gen tied to your goal. "We run everything" is not a strategy.
How do you verify tracking before spending?
Tracking should be checked before a single dollar goes out. If conversions are not verified first, the spend reports are guesswork.
What metric sits at the top of your monthly report?
The first number should be one tied to revenue or qualified leads. If it is impressions or clicks, the report is built to look good, not to be good.
Who works my account day to day?
Ask for the name of the person in your account, not just the one who pitched you. Know who is actually making the changes.
Can I see a live account, anonymized?
A live screen-share shows real work, not a polished deck. An agency confident in its method will walk you through one.
What happens to my data if I leave?
Your campaign history, conversion data and learnings should stay with you when you go. Ask exactly what you keep on the way out.
Ask us these ten on a free consultation
Put every question to us on a free consultation, a live screen-share audit of your own account. We check your tracking, flag wasted spend and review alignment. No minimum spend, no contract, and you keep your account either way.
They chose on these criteria, then stayed
Professional, responsive and highly competent team. Our Google Ads landing pages perform far better since we started working with them.
IMG Media has supported us for over 10 years. Impeccable service, great integrity, always listening and always ready to act.
Ten years on a no-contract model means Robert could have walked away any month. He never did. That is the criterion working in real life: stay only as long as the work earns it.
Answers before you sign
How much does a Google Ads agency cost?+
Most agencies bill one of two ways: a flat monthly retainer, or a percentage of your ad spend. The model matters more than the number, because percent-of-spend ties the agency's pay to a bigger budget rather than better results. We run a flat retainer with no contract for exactly that reason. See flat retainer vs. percent-of-spend pricing, the full breakdown.
What does "Google Partner" actually verify, and is it enough on its own?+
Google Partner status confirms certified staff and that the agency meets Google's platform performance standards. It is table stakes, not a differentiator. Plenty of Partners still mishandle ownership, pricing, and tracking. Treat it as a baseline, then apply the five criteria on top. We hold current Google Partner status and nothing more inflated than that.
Should I hire an agency or run Google Ads myself?+
Run it yourself if your budget is small, your account is simple, and you have the hours to learn the auction. Bring in an agency when wasted spend costs more than the fee, or when Search, Performance Max, Demand Gen, and conversion tracking need a method you do not have time to build. The deciding question is whether your time is better spent on the account or on the business it feeds.
How long before I should expect results from a new agency?+
Honest answer: it depends on tracking and the bidding algorithm's learning period. A new agency should first verify conversion tracking, then let smart-bidding strategies gather enough data before scaling budget, which takes weeks, not days. Anyone promising a guaranteed timeline is selling certainty the auction cannot give. Ask what they fix first and what signals they watch, not just when the line goes up.
Can I switch agencies without losing my campaign history?+
Yes, as long as the ad account is in your name. When you own the account, its full history stays with you and the next agency picks up where the last one left off. If the agency owns it, you can walk away empty-handed. Confirm ownership before you sign: what to demand in your agency contract.
Written by Martin Genesse, Founder and Director of Strategy at IMG Media, a current Google Partner agency running pure-play Google Ads management (Search, PMax, Demand Gen) on the flat-retainer, no-contract model this guide tells you to demand. [CONTENT NEEDED: Martin Genesse one-line bio, years in Google Ads, notable account scope.] Reviewed by Nathanaël Morin, Partner and Director of Technology, co-creator of the MaxV™ methodology and named in client reviews for a results-focused approach. [CONTENT NEEDED: Nathanaël Morin one-line bio, years in Google Ads, notable account scope.]
Reviewed for accuracy · [CONTENT NEEDED: date]
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