Fractional CMO vs marketing agency
These are not competing products. A marketing agency sells execution capacity in a channel; a Fractional CMO sells the decisions the execution serves. Most businesses that think they need to choose actually need one of each — the question is which one first.
Should I hire a Fractional CMO or a marketing agency?
Hire an agency when you know what to do and need capacity to do it well. Hire a Fractional CMO when nobody senior owns the marketing strategy, the budget or the numbers. If you cannot state your target cost per qualified enquiry, leadership comes first — otherwise the agency is optimising towards a goal nobody set.
What actually differs
The differences that change the outcome, rather than the ones that make good sales copy.
| Aspect | Fractional CMO | Marketing agency |
|---|---|---|
| What you are buying | Decisions: positioning, priorities, budget allocation, targets and accountability for pipeline. | Delivery: campaigns, creative, media buying or content produced against a brief. |
| Who sets the brief | The Fractional CMO does, with your board — and then holds suppliers to it. | You do. Brief quality is the single biggest driver of agency results. |
| Reporting | Commercial: pipeline, cost per qualified enquiry, contribution to revenue. | Channel: impressions, clicks, rankings, cost per click or cost per lead. |
| Typical commitment | One or two days a month up to one day a week, reviewed as the need changes. | Monthly retainer per channel, often with a minimum term and media spend on top. |
| Failure mode | Great strategy, no hands to deliver it — you still need executors. | Excellent channel work pointed at the wrong audience, offer or market. |
If the leadership column describes your gap, the next step is a discovery call to map the bottleneck. If the agency column fits, browse the services page to see how execution is delivered once the marketing strategy is set.
Which one is right for you
Both columns are legitimate answers. These are the conditions that decide it.
Choose fractional leadership when
- Marketing spend already exists but no one senior owns the plan.
- You have two or three suppliers and no single view of what they are achieving.
- You cannot say what a qualified enquiry costs you today.
- The proposition or pricing is the actual constraint, not traffic.
Choose a marketing agency when
- The strategy is clear, agreed and written down, and you need delivery capacity.
- You need a specialist skill occasionally — technical SEO, creative production, paid media.
- Someone internal is already accountable for the numbers and can brief properly.
If nobody in the business can defend the marketing plan to a board, start with leadership. If someone can, buy the delivery — and keep them briefed.
How the two roles fit together
The detail behind the headline: what each role actually does, when each comes first, and how they work as a pair.
What a Fractional CMO actually does
A Fractional CMO is not a consultant who visits, comments and leaves. The role is accountable leadership on a part-time basis: owning the marketing plan, chairing the marketing meeting, briefing and managing suppliers, setting the priorities for the quarter and reporting to the board on what marketing produced against target.
In practice a Growth Advisory Retainer covers a weekly working session with your team or agency, ongoing review of performance data, sign-off on the next sprint of work, and direct involvement wherever marketing meets sales — lead handover, follow-up discipline, proposal messaging and win/loss review.
What a marketing agency actually does
An agency turns a brief into output: paid campaigns, creative, content, SEO or website design. The best agencies are excellent at their channel, but they are not hired to decide whether that channel is the right priority. Their success depends on the quality of the brief they receive.
That is why an agency performs better when someone senior on the client side owns the strategy, the budget and the commercial target. Without that, even a good agency can optimise the wrong metric.
When to hire the leader first
Start with a Fractional CMO when marketing spend exists but nobody can say what it is supposed to produce. The typical symptoms are multiple suppliers pulling in different directions, reports written in channel metrics rather than revenue, and a founder or MD who is still the de facto head of marketing.
The first output is usually a written marketing strategy: audience, proposition, channel priorities, budget split and the numbers that define success. Once that exists, you can brief an agency properly — or decide you do not need one yet.
When to hire the agency first
Hire the agency first when the plan is already clear and the constraint is capacity. You know the audience, the offer, the message and the channel; you simply need someone to run it better than you can in-house. This is common in established businesses with a proven funnel.
In this case the Fractional CMO role may still be useful — but as oversight and review rather than strategy creation. The right sequence depends on what is missing, not on what sounds more impressive.
Can they work together?
Yes — and they often should. The Fractional CMO sets the brief, chooses and manages the agency, and reports on whether the spend is producing qualified enquiries. The agency executes the channel work. The same budget frequently performs better because the brief is sharper and the reporting is honest.
If you already have an agency and are wondering whether you also need leadership, the test is simple: can you show me last month's cost per qualified enquiry by channel, and the decision you made because of it? If not, start with a discovery call to diagnose where the gap is.
Cost comparison for a typical SME
A full-time Marketing Director in the North West typically costs £70,000–£100,000 plus employer's NI, pension, recruitment and equipment. A Fractional CMO retainer is a fraction of that, usually two to four days a month. An agency retainer depends on the channel but is often £1,500–£5,000 a month plus media spend.
The cheapest option is rarely the right one. The question is which role removes the biggest constraint on revenue. For many SMEs at £2m–£20m turnover, the constraint is leadership, not execution.
Where to go next
A few things worth reading — and the pages most people move to from here.
Related insights
- SME GrowthWhen an SME Should Hire a Fractional CMO Instead of a Marketing DirectorThe revenue, team and complexity signals that decide between part-time and full-time leadership.
- Marketing StrategyWhy Your Marketing Isn't Working (And It Probably Isn't the Tactics)The positioning and priority problems that make good execution look like bad marketing.
- AnalyticsThe Five Marketing Numbers Your Board Actually WantsThe reporting set that turns marketing activity into a commercial conversation.
Related services
- Book a discovery callA 30-minute call to size up the opportunity.
- Fractional CMOSenior marketing leadership on a retained, part-time basis.
- Marketing strategyPositioning, audience priorities and a plan your team can execute.
- All servicesEvery marketing leadership, strategy and growth service on one page.
- Growth Advisory RetainerMonthly strategy calls and async support from £500/month.
- SEOTechnical, content and commercial search visibility.
- Website design & buildA full rebuild for a site that no longer sells what you do.
Related case studies
- PropTech / SaaSLogical PlanningNew site launch — Planning Potential Score with a paid self-serve funnel
- Chartered surveyingMcGarrigle and CoNiche authority — tenant-side surveyor positioned as the specialist
- Property servicesCheshire LettingsLocal market leader — owner-led letting agency with landlord-first positioning
Frequently asked questions
Do you replace our marketing agency?
Is a Fractional CMO cheaper than an agency?
Can a Fractional CMO manage our existing agency?
How do I know which one I need first?
What does a typical Fractional CMO engagement look like?
Still unsure which fits your business?
Book a 30-minute discovery call. I will ask where your marketing is today, where the bottleneck is, and whether leadership, delivery or both is the right next step.