You have picked an agency, signed the agreement, and now you are wondering what you actually bought. Most agencies are good at explaining their services and vague about the first 90 days with a marketing agency, which is exactly the stretch where expectations get set or broken. Here is what a healthy first quarter looks like from our side of the table, what you should be doing on yours, and the signs that something is off before month three.

Weeks 1 and 2: the audit and the access

The first two weeks should feel more like an investigation than a campaign. A good agency starts by getting access to your ad accounts, analytics, website, and customer data, then digs into what has already been tried, what it cost, and where the money leaked. For a business that has been advertising for a while, this is often where the fastest wins hide: a campaign spending on the wrong searches, an audience that never converted, or tracking that stopped firing months ago.

This is also when ownership should be settled. The ad accounts, pixels, and data should live in accounts you own, with the agency added as a partner. If an agency wants to build everything inside its own account and hand you reports, ask what happens to that history if you ever part ways.

Your job in this window: answer questions quickly and honestly. What is a customer worth to you? Which products or services do you actually want more of? What happened last time you ran ads? The quality of the strategy depends on the quality of these answers.

Weeks 3 to 6: tracking first, then launch

Before a dollar goes into new campaigns, conversion tracking should be verified end to end, meaning the platforms can see a lead or sale when it happens, not just a click. If this step gets skipped, every decision for the next three months is made on bad data. Our conversion tracking setup guide covers what that should include.

Then comes the build: campaign structure, audiences or keywords, landing pages if needed, and the first round of creative. A good launch tests a few distinct angles on purpose rather than betting everything on one ad. Expect the first two to four weeks after launch to look uneven. Every platform runs a learning phase, a stretch where the algorithm is still testing who to show your ads to, and judging results in the first week is one of the costliest mistakes a new client can make.

Weeks 6 to 10: cutting and doubling down

Once real data comes in, the work shifts from building to editing. Audiences, ads, and keywords that are not producing leads get cut. Budget moves toward what is. Creative gets refreshed based on which hooks and offers people actually responded to, not which ones the team liked best in the meeting.

This is the stretch where a lot of the value is created, and it is mostly invisible if you only look at a monthly report. Ask your agency what they changed in the last two weeks and why. A team that is actively managing the account will have a specific answer. A team that set it and forgot it will talk about “letting the algorithm learn” for the third month in a row.

Weeks 10 to 13: the first honest read

By the end of the first quarter you should have enough data for a real conversation about results. Not a final verdict, but a clear picture: cost per lead or cost per sale, how many of those leads turned into revenue, what is working, what is not, and what the plan is for the next 90 days. If the numbers work, this is when scaling starts, carefully, since raising budget too fast can undo what the first two months built.

For compounding channels like SEO and email, 90 days is usually too early for a final read. You should still see the groundwork done and early movement, but the bigger returns build over the following months.

Warning signs to watch for

A few patterns in the first 90 days usually predict a bad fit:

  • Reports full of impressions and clicks, with no mention of leads or revenue.
  • No questions about your margins, close rate, or customer value.
  • Campaigns launched before tracking was confirmed.
  • You cannot get a straight answer on who is actually working on your account.
  • Every slow week is blamed on the algorithm, with no changes to show for it.

If you are still choosing between agencies, our guide on what to ask before you hire a marketing agency covers how to spot most of these before you sign.

The bottom line

The first 90 days with a marketing agency should move in a clear sequence: audit, tracking, launch, edit, then an honest review with a plan. You should always know what was changed and why, and you should own the accounts the whole way through. If you want to see how we would map the first quarter across the services you need, book a free strategy call and we will walk you through it before you commit to anything.