Signs Your Google Ads Agency Isn’t Performing (And Exactly How to Confirm It)

The average Google Ads agency retainer runs between $1,500 and $5,000 per month. Most clients pay that bill for six, twelve, sometimes eighteen months before they stop and ask a simple question: what exactly am I getting for this?

That question usually comes too late. By then, you’ve burned a significant chunk of ad budget on an account that was either ignored, mismanaged, or actively making the problems worse. The hardest part? Underperformance rarely announces itself. There’s no error message. No alarm. Just a slow, expensive drift toward nothing.

This is the diagnostic guide your agency doesn’t want you to have. Every red flag below is measurable. Every one of them is something you can verify in your own account — today, without needing to ask your agency for permission.

Your ROAS or CPL Has Been Flat for 90 Days (and Nobody’s Talking About It)

Ninety days of flat performance without a corresponding explanation and a clear action plan is the single most reliable signal that your agency has gone into maintenance mode.

Maintenance mode means they’re keeping the lights on. Budgets are pacing. Ads are serving. The account isn’t on fire. But nobody is pushing it forward — no new campaign structures, no bid strategy tests, no landing page experiments. Just the same campaigns running the same way they ran last quarter.

To be clear: some plateaus are real. Seasonality happens. Market conditions shift. CPCs in competitive verticals spike in Q4. A flat ROAS in November in an ecommerce account isn’t automatically a red flag — it might be a strategy call. But if your agency can’t articulate why performance is flat and what they’re specifically doing to break through it, the plateau isn’t a market problem. It’s a management problem.

Pull your account’s ROAS or CPL trend for the last 90 days right now. If the line is flat — or worse, trending down — and your last agency call was mostly them explaining why it’s “seasonality” or “algorithm changes,” that’s your answer.

For context on what good ROAS targets look like by industry, this breakdown of Google Ads ROAS benchmarks by industry gives you real numbers to anchor the conversation.

The Negative Keyword List Hasn’t Been Touched in Weeks

This is one of the most common — and most expensive — signs of a neglected account. Negative keyword maintenance isn’t glamorous work. It doesn’t show up in a deck. But skipping it costs real money every single day.

Here’s what happens without regular search term audits: Google’s matching algorithm — especially if you’re running broad match or phrase match — routes your ads to increasingly irrelevant queries. You’re paying for clicks from people who will never buy from you. That wasted spend inflates your CPL, suppresses your conversion rate, and gives Smart Bidding garbage signals to learn from. The algorithm starts optimizing toward the wrong users because those are the users it keeps seeing.

A well-managed account should have negative keywords reviewed at minimum every two weeks. For accounts spending $10K+/month, weekly is the standard. If you go into your Change History and filter for “Negative keyword” additions, you should see regular entries. If the last one was 45 days ago, your budget is currently funding someone else’s research trip.

This is one of the core areas covered in a strong negative keyword strategy — and it’s one of the fastest ways to recover wasted spend without touching your bids.

You’re Getting Reports, But Not Information

There’s a category of agency deliverable that looks like transparency but is actually the opposite. You’ve seen it: a PDF or a Google Data Studio dashboard showing impressions, clicks, CTR, and maybe conversion volume — all with green arrows pointing up. It looks reassuring. It tells you almost nothing.

Impressions are up because the agency expanded match types. Clicks are up because bids increased. CTR looks good because the report is cherry-picking the campaigns with higher engagement. Meanwhile, your actual cost per acquired customer went up 30%, and that number appears nowhere in the report.

Real reporting tells you what happened, why it happened, and what’s changing next. It includes conversion data segmented by campaign and keyword. It includes search impression share to show whether you’re actually capturing the demand that exists. It includes a clear look at wasted spend — not just successful spend. And it ends with a specific action plan, not a vague promise to “continue optimizing.”

If you have to ask your agency for the conversion data because it’s not in the report, that’s a choice they made. Ask yourself why.

There’s No Testing Cadence You Can Point To

A Google Ads account that isn’t running structured tests isn’t being managed — it’s being monitored. There’s a massive difference.

Monitoring means watching numbers and reacting when something breaks. Managing means running a continuous hypothesis-driven process: test this headline against that one, test a tROAS of 4.0 vs 3.5 in this campaign, test sending traffic to a short-form landing page vs a long-form one. Systematic. Documented. With a hypothesis before the test starts and a decision after it ends.

Google’s own Experiments feature exists precisely for this — and most agencies never touch it. That’s not an opinion. The data consistently shows that a tiny fraction of accounts run structured experiments. If your agency isn’t using it, they’re making account changes by gut feel and calling it “optimization.”

Ask your agency to show you the last three tests they ran in your account. What was the hypothesis? What was the result? What decision did they make based on it? If they can’t answer those questions with specifics, they’re not testing. They’re guessing.

You Don’t Have Full Access to Your Own Account

This one isn’t a performance red flag — it’s a structural one. But it matters more than almost anything else on this list.

Your Google Ads account should be owned by you, under your Google account, with your agency listed as a manager or standard user. If your agency created the account under their MCC (Manager account) and you don’t have admin-level access, you don’t actually own your account. You own your ad spend history, your conversion data, your audiences — and you can’t take any of it with you if you leave.

Some agencies do this intentionally. Others do it out of laziness or habit. Either way, if you were to end the relationship tomorrow and they control the account, you’d be starting from zero. No historical data. No audiences. No conversion history for Smart Bidding to learn from. Months of machine learning — gone.

Log into ads.google.com right now. If you can, check your account’s access settings and confirm you have admin-level access. If you can’t log in directly, or if your agency has made it difficult to access, that’s worth a serious conversation — or a serious decision.

The Account Structure Hasn’t Evolved Since Onboarding

A Google Ads account built in 2024 shouldn’t look identical in mid-2026. The platform changes. Smart Bidding evolves. Performance Max has matured. Match type behavior has shifted significantly. An account that was well-structured at launch needs to be revisited — continuously — as both the platform and your business evolve.

Signs that your account structure hasn’t kept up:

• You’re running dozens of tightly segmented ad groups built for manual CPC bidding, but you’ve been on Smart Bidding for a year — this over-segmentation is now actively hurting you by starving individual campaigns of conversion data.
• You have no Performance Max campaigns, or you have only Performance Max with no supporting search campaigns to protect branded and high-intent terms.
• Your campaign naming conventions are a mess of legacy names nobody remembers creating.
• Your geographic targeting hasn’t been reviewed since setup, and you’re likely either excluding markets that could convert or wasting budget on areas with zero historical performance.

A good agency treats account structure as a living framework, not a one-time deliverable. If yours looks exactly like it did when you signed the contract, ask what exactly has been optimized since then.

Budget Pacing Is Off and Nobody’s Explained Why

Budget problems are one of the most visible — and most ignored — signs of poor account management. If your campaigns are consistently blowing through budget by mid-morning, or consistently underspending by 40% at the end of the month, something is structurally wrong.

Overspending by 9am means your bids are too aggressive for your budget, your dayparting isn’t configured correctly, or your campaign isn’t using shared budgets or budget caps intelligently. Underspending means your bids are too conservative, your targeting is too narrow, or your Quality Scores are suppressing your ad serving.

Neither of these is a Google problem. Both of these are management problems. And if your agency has let either pattern persist for more than two or three weeks without surfacing it and proposing a fix, they’re not watching your account closely enough. Budget pacing issues don’t resolve themselves — they compound.

They’re Not Asking About What Happens After the Click

The best Google Ads agencies are obsessive about what happens after someone clicks your ad. Because that’s where the money is actually made or lost.

If your agency has never asked about your landing page conversion rates, never suggested a page variant to test, never flagged that your form is too long or your CTA is weak — they’re managing clicks, not customers. That’s a fundamentally incomplete service.

Great agencies know that a 2% conversion rate on a landing page is a bigger lever than shaving $0.50 off your CPC. They know that a 4% improvement in post-click conversion can double your lead volume without touching your budget. And they push on that relentlessly, even when it means telling you that the problem isn’t the ads — it’s the page they’re sending traffic to.

If your agency has never had that conversation with you, they’re optimizing for their own comfort, not your results.

Frequently Asked Questions

How long should I give a new Google Ads agency before expecting results?

The honest answer is 60–90 days for meaningful directional data, and 90–120 days before you should expect the account to be operating at close to its potential. That said, you should see activity — tests launched, structure changes made, search term audits completed — within the first 30 days. Silence in the first month is a red flag regardless of the “learning phase” excuse. Here’s exactly what to expect in those first 90 days and how to benchmark whether your agency is actually on track.

What metrics should I be tracking to hold my agency accountable?

At a minimum: cost per lead or ROAS (depending on your model), conversion rate by campaign, search impression share on your core keywords, wasted spend percentage (what share of clicks came from irrelevant search terms), and quality score trends on your top keywords. Clicks and impressions are awareness metrics, not performance metrics. If your reports lead with those, push back.

What’s the difference between a bad agency and one that’s just dealing with a hard market?

A good agency in a hard market tells you it’s hard, shows you the data proving it, and presents specific options — including uncomfortable ones like pausing underperforming campaigns, testing new keyword categories, or adjusting budget allocation. A bad agency in a hard market blames Google, blames seasonality, and changes nothing. The market doesn’t change what a good agency does. It changes what’s possible. Those are different things.

Should I be able to see everything in my Google Ads account?

Yes. Full stop. You should have admin access to your own account. You should be able to see every campaign, every keyword, every search term report, every change ever made in the Change History. If your agency resists giving you access or makes it conditional on staying with them, that’s not a standard contract clause — it’s a control tactic.

How do I know if my agency is actually testing anything?

Ask them to pull up your Experiments tab in Google Ads and walk you through what’s currently running and what has concluded in the last 90 days. If they go quiet, that’s your answer. A genuine testing culture means you’ll have a list of hypotheses, running tests, and documented results — not a vague claim that they’re “always optimizing.”

Is it worth switching agencies if I’ve already invested 6 months?

The sunk cost of six months is gone regardless of what you do next. The real question is: how many more months of underperformance are you willing to pay for? If the red flags on this list are present and your agency hasn’t addressed them after being asked directly, switching isn’t starting over — it’s stopping the bleeding. Knowing what to look for in an agency replacement makes the transition much cleaner than most clients expect.