How long should I wait before evaluating a new marketing agency?

Why 90 Days Is the Fair Default

Ninety days is the right default evaluation window for a new full-funnel agency — long enough that paid channels have stabilized and onboarding is complete, short enough that you're not pouring money into something broken for half a year.

The first month of any engagement is largely setup: granting access, auditing what's there, fixing tracking, rebuilding or launching campaigns, and learning your business. Almost no outcome data from that month is meaningful, because the program isn't fully running yet. Months two and three are where a paid program settles — campaigns exit their learning phase, the agency cuts waste, and a real cost per lead emerges that you can trust and trend.

That's why a single bad month early on tells you very little, and why agencies that promise transformation in three weeks are usually overselling. Give the work enough runway to be judged on a stable picture rather than launch-week noise.

But '90 days' doesn't mean 'sit silent for 90 days'. The smart version is a 90-day window with milestones inside it: a 30-day check that onboarding and tracking are done, a 60-day check that campaigns are live and producing early leads, and a 90-day review of cost per lead, lead quality, and trend. You set those checkpoints with the agency up front, alongside the metric each one is judged on. That way you're evaluating against expectations you both agreed to — not a vague feeling that it's 'taking too long' or 'going great' based on a single good week.

Set the Clock by Channel, Not by Calendar

The honest answer to 'how long should I wait' depends entirely on which channels the agency is running, because they mature at completely different speeds. Judging them all on one timeline is the most common evaluation mistake.

Google Ads and paid social are the fast channels. You should see leads within the first few weeks, and by month three the cost per lead should have stabilized and started improving as the account is optimized. If paid ads are still erratic and unexplained at 90 days, that's a fair basis for a hard conversation. Paid is where you can legitimately expect early proof.

SEO is the slow channel. Meaningful organic results typically take 6–12 months, because Google has to crawl, index, and trust new and improved pages, and rankings build gradually. Evaluating SEO outcomes at 60 days measures effort, not results. What you can check early is the work itself: technical fixes shipped, content published, pages improving in position even if they haven't hit the first page yet. Those are leading indicators that the right work is happening.

Content, email, branding, and AI-search/GEO sit in between, and also compound over months rather than days. The takeaway: ask the agency, at the start, what 'on track' looks like at 30, 60, and 90 days for each channel they're running. A good agency will set those expectations honestly — fast wins where they're realistic, patience where the channel demands it — rather than promising everything at once.

What You Can Judge From Day One

Not everything needs a waiting period. A whole category of signals is visible in the first two weeks and tells you a lot about whether you've hired the right team — long before any outcome data exists.

Responsiveness and communication: Do they reply promptly, explain what they're doing in plain language, and run a structured onboarding? An agency that goes quiet or vague in the honeymoon period rarely gets better once the work is routine.

Account ownership and access: Are your Google Ads, Analytics, and other accounts in your name, with the agency given access — not the other way around? You should own your accounts and data from day one. If an agency builds campaigns inside its own accounts so you can't take them with you, that's a structural red flag, not a results question.

Tracking setup: Is conversion tracking for calls, forms, and sales configured correctly and confirmed firing? This is the foundation everything else is judged on. If tracking is broken at month three, you'll have wasted a quarter with no reliable data to evaluate.

Transparency: Can you see the actual accounts and the real numbers, or only a polished slide the agency typed? Reports built on your own owned accounts are checkable; numbers on a deck are not.

These process signals don't require 90 days — they require attention in week one. If they look wrong early, you don't have to wait out the full window to raise them. Process problems compound, so it's better to fix them while the relationship is new than to discover them at the review.

When to Be Patient, and When Not to Wait

The skill is distinguishing problems that need time from problems that won't fix themselves — because patience with the wrong issue is just delay.

Be patient with outcome timelines. If SEO leads are flat at month two, or a paid account is still finding its footing in week three, that's the work maturing, not failing. Confronting an agency over SEO results at 60 days is unfair and usually counterproductive; you agreed to a channel that takes months. Hold your nerve against the timeline you set, and judge the leading indicators in the meantime.

Don't wait on process and structural problems. Broken or missing tracking, accounts you don't own, evasive answers, missed onboarding deadlines, or an agency that can't explain what it's actually doing — none of these improve by waiting. They get more expensive. If conversion tracking still isn't firing at day 45, every additional day produces data you can't trust, so that's worth raising now, not at the 90-day review.

A practical rule: be generous with the clock on outcomes, strict with the clock on fundamentals. Give the strategy its honest runway, but don't extend that grace to setup, ownership, communication, or transparency — those should be right almost immediately.

If you reach your 90-day review and the fundamentals were never sorted, or the outcomes are flat against a fair timeline despite steady fees, that's the point to have a direct conversation with specific numbers attached — and, if it doesn't move, to consider whether it's time to move on. Our guides on telling whether an agency is producing real results and on switching agencies without losing your campaign data cover what comes next.

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