Straight answers
Ownership. A consultant answers a defined question and hands the answer back: an audit, a plan, a recommendation. Then they leave, and your team decides what to do with it. A fractional CMO makes the decision, leads the people doing the work, and is still there next quarter when a call turns out wrong. If you have one well-formed question, hire a consultant. If the gap is ongoing leadership, that is the fractional seat.
A consulting engagement is scoped as a deliverable. You buy an answer: a market study, a pricing review, a channel audit. The work ends when the document lands, and whether anything changes is your problem. A fractional CMO is scoped as a retainer because the work is a function, not a document. They set the strategy, then stay to run it: leading the team, managing the budget, adjusting when the numbers move. The expertise can be identical. The difference is who is accountable the morning after the recommendation. That is also why consultants are priced per project and fractional CMOs per month.
Two neighboring arrangements get mixed into this decision. An interim CMO is full-time but temporary: they fill a CMO-shaped hole that already exists, usually because a permanent leader left or is being recruited, and the function cannot pause. A fractional engagement usually starts earlier, when the company is not yet sure the seat should exist at all. An advisor is lighter still: a few hours a month of access to experience, sometimes for equity, with no operational responsibility. Advisors are useful. They are not leadership, and they should not be priced or judged as if they were.
Ask what happens after the answer. If the honest answer is “we will know what to do and we have the people to do it,” a consultant is the cheaper, correct buy. If the answer is “we will still need someone senior deciding, week after week,” you are describing the fractional seat. And if the strategy is settled but the work itself is not getting done, neither is the fix; that gap belongs to an agency, which is a different comparison: fractional CMO vs. agency. Buy the shape of help that matches the shape of the gap.
It happens, usually after a strategy project lands well and both sides see the ongoing gap. Watch the incentives when it does: the person who sold the diagnosis should not be the only voice deciding the prescription is a retainer. Ask what they would do in the first 90 days and judge that, not the deck.
Per month, usually yes; per outcome, not necessarily. A consultant’s project fee looks smaller until the recommendations sit unimplemented and get re-bought next year. A fractional retainer costs more because it includes the implementation leadership. Compare total cost over twelve months, including the work that did or did not get done, not the first invoice.
Look at your last three marketing initiatives. If they failed for lack of a good plan, the problem is advice-shaped. If reasonable plans kept dying in execution, drift, or indecision, the problem is leadership-shaped. Most companies that call us have already bought the plan once. They are missing the person who makes it happen.
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Don’t know exactly what you need? Good. That’s our job. Tell us where the business is headed and we’ll tell you honestly whether we can help — and if we can’t, who might.
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