Start with the weekly decisions and people the leader must support. Reserve time for evidence review, founder and sales alignment, team direction and follow-through. If that exceeds the proposed availability, narrow the scope or buy more capacity; a fixed number of hours cannot rescue an impossible brief.
Start with the calendar, not a rate card
Count the recurring forums where marketing decisions happen: founder check-in, sales pipeline review, team planning, agency review and customer-learning review. Then add preparation, writing and follow-up. If the leader cannot attend the meeting where priorities are set, their available hours may not translate into authority. Time on a calendar is only one part of the capacity calculation.
Build a weekly workload table
Write down each responsibility, owner and estimated time range. Separate leadership from production. “Review two landing-page tests” is different from “write, design, build and launch two pages”. Add slack for a buyer interview or urgent sales objection. If the total exceeds availability, choose which work stops. The one-marketer workload guide shows why an overloaded brief fails even when the person is strong.
A bounded example
A technical founder with one junior marketer might need a leader for a weekly priority meeting, one sales review, feedback on key assets and monthly measurement. That could be a defined part-time remit. Add a product launch, a new agency and two hires, and the same schedule becomes implausible. The correct response is to rescope the quarter, add production support or increase leadership availability.
Test availability in the proposal
Ask which days the fractional leader is reachable, who handles decisions between sessions and how emergencies are treated. Require explicit deliverables and decision rights, not a promise that “the hours will work out”. Review after four weeks against the actual time consumed and the decisions made. A schedule is useful when it protects focus; it is not a substitute for scope.
Estimate the capacity without pretending every week is identical
Create a two-column calendar for normal weeks and change-heavy weeks. In a normal week, include preparation for the founder and team meetings, reviewing live work, speaking with sales and recording decisions. In a change-heavy week, include a launch, hiring interview, agency reset or lost-deal review. A fixed engagement may cover the normal week and require a separately agreed surge for exceptional work. The proposal should say how that surge is handled before it happens.
Test the schedule against response time. If a sales objection needs a marketing decision within 24 hours but the leader is available only on Fridays, the team needs an interim decision rule. If the role includes managing a junior marketer, count feedback and coaching time as real work rather than assuming it fits between calls. Ask the candidate what they would stop when the calendar exceeds the cap. A credible answer prioritises; an implausible one says every request can fit.
Frequently asked questions
Is one day a week enough for a fractional CMO?
It may be enough for a narrow advisory or leadership scope with a capable team. It is unlikely to cover diagnosis, hiring, agency management and hands-on production simultaneously.
Should a founder buy the cheapest hours package?
Compare the work and decision access first. A small package that cannot cover the required work can cost more in delay and rework than a well-scoped larger one.
Is the proposed fractional schedule enough for your team?
Share the current meetings, team, open decisions and delivery expectations. We can test whether the scope fits the time before you sign a retainer.
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