Mark Month Zero Before a Marketing Retainer Starts

It is the end of the third month of a marketing retainer. The owner opens the monthly report, reads that leads are up, and asks the question that should be easy: up from what? Nobody wrote down how many inquiries came in before the work started. The ad account was new. The phone log was never exported. The old analytics were replaced by a new setup in the first week. The agency has a chart that begins on the day it arrived, and the owner has a feeling. Neither of those is a baseline.

Growth charts on doorframes work because somebody made a pencil mark on the first day and wrote the date next to it. Every later mark means something only because that first one exists. Marketing works the same way. Before you sign any retainer, ours included, spend an afternoon marking month zero.

On CMO Growth the baseline is part of the setup. The plan page lists what the $499 setup fee covers, and an AEO baseline audit, a paid ads account audit and a conversion tracking install are on it. The plan is delivered against a written scope with agreed baseline metrics, and the first monthly report is meant to show lead and funnel movement against that agreed baseline. I would still do your own version first, for a reason that has nothing to do with trust: the person who records the before should be the person who has to live with the after.

What to write down, and where to find it

You do not need a data team. You need a handful of numbers and one set of screenshots, each with a date on it. Most of it lives in tools you already pay for.

• Inquiries per month, by source. Web forms, phone calls, WhatsApp or text messages, email and walk-ins. Count the last three full months. If you only track one channel, say so in the note; a blank is more honest than a guess.
• How many of those became customers. Even a rough monthly count tells you later whether a rise in inquiries was real demand or noise.
• What you spent on ads, and where. Pull the invoices from each platform for the same three months. If you ran nothing, write zero. Zero is a baseline too.
• Your search and map visibility. Export the last three months from Google Search Console and from your Google Business Profile, where calls, direction requests and website clicks are recorded.
• What AI assistants say about you today. Ask ChatGPT, Claude, Perplexity and Google's AI Overviews the questions a buyer would ask before choosing a business like yours. Screenshot every answer, including the ones where you are missing.

Put all of it in one document, date it and send a copy to whoever you are about to hire. The screenshots matter most, because AI answers change and nobody can reconstruct what an assistant said last spring.

The number that decides the review

Pick the one number that pays the bills and agree on it in writing. For a dental practice it is booked first appointments. For a contractor it is quote requests. For a restaurant it might be reservations on the quiet nights of the week. Everything else in the monthly report should explain that number rather than stand in for it.

This is where a baseline protects both sides. The Growth plan includes regular performance reviews against the metrics agreed at the start, and a review is only fair if the starting value was agreed before any work began. If a number is going to be used to judge the engagement, both of you should have signed off on where it stood in month zero.

A one-page template

If it helps, this is the shape I would use. Keep it to a single page, so that somebody actually reads it in month three instead of filing it.

1. The date, and the name of whoever compiled it.
2. The one number that pays the bills, its value in each of the last three months, and how it was counted.
3. Inquiries by source and customers won, per month, with the counting method written next to each.
4. Ad spend by platform, per month, including the months where it was nothing.
5. The Search Console and Business Profile exports, attached rather than summarized.
6. The questions you asked the AI assistants, word for word, with the screenshots attached.

Sign it, send it, and keep a copy somewhere you will be able to find it in ninety days.

How a baseline gets quietly ruined

• Changing the tracking in week one. New analytics, a new form tool or a new phone number on the site can each reset your history. Export the old data before anything is replaced.
• Counting differently later. If month zero counted phone calls from the call log and month three counts form fills in the CRM, the comparison is meaningless. Write down how each number was counted, not only what it was.
• Ignoring the calendar. Garden centres peak in spring and ski rentals in winter. Where you have them, compare the same months of last year, and note anything unusual, such as a closure, a price change or a new competitor down the road.
• Moving the goalposts. If the business decides mid-quarter that it cares about a different number, record a fresh baseline for that number on the same day instead of backfilling a guess.

Who should not start a retainer yet

If you cannot give the people you hire access to your ad accounts, your analytics and your website, wait. A done-for-you plan runs on that access, and CMO Growth's own setup list includes the paid ads account audit and access and the conversion tracking install. Without them the baseline cannot be measured, and neither can anything after it.

And if you would rather make the changes yourself and only want the diagnosis, a retainer is the wrong shape. That buyer belongs on AEO Starter, which hands you the audit and the playbook and leaves the work to you. There is no shame in that; it is the cheaper plan for a reason.

Month three, done right

Picture the same review with a mark on the doorframe. The report shows inquiries by source going from one number to another, counted the same way both times. It puts the AI answers from month zero next to this month's. It says what was spent and what came back. The owner can still disagree with the interpretation, and that is a useful argument to have, because the facts are not in dispute.

It also changes the tone of the relationship. An agency that knows the before is on paper stops selling charts and starts explaining causes. An owner who wrote the before down stops asking whether it is working and starts asking what to do more of.

If you are weighing CMO Growth, bring your month-zero document to the 20-minute fit call. It shortens the conversation, and it gives you a way to judge us that does not depend on our own chart.

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