The first month of a fractional CMO engagement is meant to produce a diagnosis and a plan. In practice, a surprising share of that month can be lost waiting: for ad account access, for someone to find last year's budget, for an agency to share a report, for a meeting with the sales lead. Every day of waiting is a day of a part-time leader's time spent on email instead of analysis. This checklist sets out what to prepare before the start date and in the first week: system access, data exports, documents and people. It also covers how to grant access safely, so that your company keeps ownership of every account. Use it as a working list and tick items off as you go.
Why onboarding speed matters
A fractional CMO works limited hours, so delays cost proportionally more than they would for a full-time hire. If access takes two weeks, a two-day-a-week leader may lose a large part of their first month. The diagnosis then arrives late, the plan arrives later, and the founder starts to wonder whether the engagement is working before it has properly started. Preparing in advance avoids this. It also signals that the company is serious about the engagement, which tends to set the tone for how quickly decisions get made afterwards.
System access
Grant named-user access, not shared logins, to each system the fractional CMO needs. Typical list: Google Ads, Meta Business portfolio and ad accounts, LinkedIn Campaign Manager and any other ad platforms; Google Analytics 4 and Google Tag Manager; Google Search Console; the CRM, such as HubSpot, Zoho or Salesforce; the marketing automation or email platform; the website content management system and hosting dashboard where relevant; call tracking, chat or WhatsApp Business tools; the e-commerce platform for D2C brands; and shared drives where marketing files live. Start with read access or a standard user role where possible, and raise permissions when specific work requires it. Record what was granted so that it can be removed cleanly at the end.
Keep ownership of every account
Use onboarding to check ownership, because it is easier to fix now than during a dispute later. Ad accounts should sit in your company's own business portfolio or manager account, not inside an agency's. Someone at your company should hold administrator rights in Google Analytics, Tag Manager and the CRM. Domains, hosting and email sending domains should be registered to the company. If any of these are owned by a former employee or agency, note it as a priority for the fractional CMO to resolve. Grant the fractional CMO access as a user of your accounts rather than transferring anything into theirs.
Data to export before the start date
Prepare these exports for at least the last twelve months, ideally more: marketing spend by month and channel, including agency fees and tools; leads or enquiries by month and source; opportunities and closed deals by month, with source, value and stage dates; customer counts, revenue and, for subscription businesses, churn or retention; website traffic and conversion data if analytics is reliable; and any previous marketing reports or dashboards. For D2C brands, add orders, returns and contribution margin by month and channel. It does not matter if the data is messy. Part of the diagnosis is understanding what can and cannot be trusted.
Documents to share
Gather in one shared folder: the current business plan or revenue targets; any existing marketing plan or strategy document; the marketing budget for this year; brand guidelines, positioning statements and messaging documents; pricing and packaging; product or service descriptions, including any recent changes; agency and freelancer contracts and scopes of work; recent customer research, win and loss notes, reviews or survey results; the sales process and any sales collateral; and the organisation chart. Add a short note on what has been tried in the past and what happened, because that history saves time and avoids repeating experiments that already failed.
People and diary time
List the people the fractional CMO should meet in the first two weeks, with their role and why the meeting matters: the founder or CEO, the sales leader and a few salespeople, the marketing team, key agency contacts, finance, product and, where possible, two or three customers. Book the meetings before the start date. Introduce the fractional CMO to the team and agencies in writing, stating their role, decision rights and who they report to, so that nobody is unsure whose instructions to follow. Also agree the recurring meetings, such as the leadership meeting and weekly marketing review, and send the calendar invitations in advance.
The onboarding checklist
Copy this table into your own tracker and assign an owner to each line.
| Area | Item | When |
|---|---|---|
| Access | Ad platforms, GA4, Tag Manager, Search Console | Before start |
| Access | CRM, email platform, website CMS, chat and call tools | Before start |
| Ownership | Confirm company owns ad accounts, analytics, domains | Before start |
| Data | Spend, leads, opportunities, revenue by month and source | Before start |
| Documents | Plans, budget, brand, pricing, agency contracts | Before start |
| People | Stakeholder meetings booked, team and agencies informed | Before start |
| Rhythm | Recurring meetings in the calendar | Week 1 |
| Mandate | Decision rights and spending limits confirmed in writing | Week 1 |
| Review | Date for diagnosis readout agreed | Week 1 |
Confirm the mandate in week one
Alongside the practical items, confirm the mandate in writing during the first week. That means the decisions the fractional CMO can make without asking, such as reallocating spend within agreed limits or briefing agencies; the decisions that need founder sign-off; who reports to the fractional CMO; and the date for the diagnosis readout. Most of this should already be in the contract, but a short written confirmation shared with the team avoids confusion. The article on the mandate a fractional CMO needs before day one explains why this matters.
Common onboarding mistakes
A few mistakes recur. Sharing a single login for an ad account or the CRM, which creates security risk and makes it impossible to remove access cleanly later. Granting access to the website but not to the analytics, so the fractional CMO can see pages but not how they perform. Forgetting the agencies: if they are not told about the new role, they may continue to take direction from the founder or wait for instructions that never come. Keeping the sales team out of the first weeks, which delays the most important part of the diagnosis, the handoff between marketing and sales. And treating onboarding as a single event rather than a short project with an owner. Assign one person, often an operations lead or the founder's assistant, to own the checklist until every item is complete.
Remote and cross-border onboarding
Many fractional engagements are remote, and some cross borders, such as an Indian fractional CMO working with a US company or the reverse. A few extra items help. Agree the working hours that overlap between time zones and put the recurring meetings inside them. Confirm which tools the company uses for messaging and documents, and add the fractional CMO to the right channels. Check that two-factor authentication on ad platforms and the CRM will work for someone in another country, for example by using an authenticator app rather than a local phone number. If any data cannot leave a jurisdiction, say so at the start so that the fractional CMO works within it.
FAQ
Named-user access to ad platforms, Google Analytics, Tag Manager, Search Console, the CRM, email platform, website CMS and any chat, call or e-commerce tools used for marketing.
Start with the lowest role that allows the work, and raise permissions when needed. Keep administrator rights with someone at your company.
At least twelve months of spend, leads, opportunities and revenue by month and source, more if available. Messy data is fine; assessing its reliability is part of the diagnosis.
The founder, the sales leader and some salespeople, the marketing team, key agency contacts, finance, product and, ideally, a few customers.
Keep a record of every system and role granted during onboarding, and remove each one at the end. Named-user access makes this straightforward.
Share what exists and say what is missing. Assessing which numbers can be trusted is part of the first month, and gaps in tracking or CRM data often become early priorities in the plan.
One named person, often an operations lead, chief of staff or the founder's assistant, who chases each item until it is done. Without an owner, access requests tend to sit unanswered for days.