Fractional CMO or marketing agency: which should a startup hire first?
Most founders frame this as a cost choice. It is really a question of who decides what marketing should do.
- Do we need a CMO or just an agency?
- Can an agency do strategy too?
- Can we afford both?
Hire a fractional CMO first if nobody senior owns your ICP, positioning and channel plan. Hire an agency first if that plan exists and you need people to run it. An agency is paid to deliver a defined scope. A fractional CMO is paid to decide what the scope should be and to hold every vendor, including agencies, to results.
ShoutEx sells fractional CMO work and works without account managers, so read this with that in mind. We still recommend an agency first when the plan is already clear.
| Fractional CMO | Marketing agency | |
|---|---|---|
| Owns | Strategy, priorities and the marketing number | Delivery of a scope you agree on |
| Who does the work | One senior person, plus your team or contractors | A team, often with an account manager in between |
| Best when | You don't know which channel or message will work | You know what to run and need capacity |
| Main risk | Good plan, nobody to execute it | Good execution of the wrong plan |
| Measured on | Pipeline, CAC and team decisions | Agreed outputs, such as campaigns, leads or rankings |
How to combine them
The setup that works best in our experience is a fractional CMO who writes the agency brief, sets the targets and reviews the agency every month. The agency gets clearer direction, and you get someone senior who can tell you when to change or end the contract. Plan the budget so leadership is roughly a fifth to a third of the total and the rest goes to execution and media.
When an agency first is the right call
If you already sell to a clear ICP, your positioning tests well in sales calls and you know paid search or SEO is the next channel, a specialist agency will move faster than a strategist. Bring in senior leadership later, when you add a second or third channel and need someone to choose between them.
- The agency writes its own scorecard and reports clicks instead of pipeline.
- A senior pitch, then junior delivery with an account manager between you and the work.
- Signing an agency before you know your ICP, so they guess and you pay for the guess.
- A fractional CMO with no execution budget, leaving a plan nobody runs.
- Both hired for the same work, such as two parties writing messaging.
- 12-month agency terms with no exit if results miss.
- One owner for the marketing number, written down.
- The CMO writes the agency brief and its KPIs.
- Monthly reviews tied to pipeline, with a 90-day go or no-go.
- You speak to the people doing the work, not a relay.
- Scopes that don't overlap, in writing.
- A plan to bring key skills in-house as the company grows.
What founders and researchers say
We read the threads, surveys and reports so you don't have to. Each card is our summary, linked to the source.
Agency stories in founder threads follow a pattern: a strong pitch, then junior staff, monthly reports full of activity and a switch to a new agency within a year. The founders who are happy usually had a clear brief before they signed.
Browse the threads →SaaStr's view is that fractional leaders work best when they own the core KPI and enough time to move it. That is a useful test for any senior hire you put above an agency.
Read the post →The HBR research recommends three conversations before hiring a fractional leader: what work is needed, whether there is a fit and how you will measure the relationship. The same structure works for briefing an agency.
Read the research →Labour is taking a larger share of marketing budgets in 2026, as companies find that AI and tools only pay off with skilled people running them. Decide who does the thinking before you buy more tools or hours.
Read the release →Community summaries describe recurring themes across many threads. They are not quotes from individual posts.
Read next
Go deeper in the ShoutEx guides, or check the original sources.
Bring your numbers. We'll tell you what we would do, even if it isn't us.
Book a call →Follow-up questions
Can a marketing agency do strategy?
Many offer it, but their strategy tends to point toward the services they sell. Ask who would own the plan if the answer were a channel they don't offer.
Is a fractional CMO more expensive than an agency?
Retainers often overlap. The difference is what you buy: an agency sells delivery capacity, a fractional CMO sells senior decisions.
Can we hire both at once?
Yes, if scopes don't overlap. The fractional CMO sets direction and targets, and the agency runs the agreed channels.
When should we replace both with a full-time hire?
When marketing needs daily leadership and a team of several people. A good fractional CMO helps you write that role and hire it.