What's the difference between a fractional CMO and a marketing consultant?

A consultant gives you advice and deliverables on a defined project basis - then leaves. A fractional CMO owns the marketing function on an ongoing basis, sets strategy, coaches the team, and stays accountable for results across multiple months.

Is a fractional CMO the same as an agency?

No. An agency executes specific marketing functions (paid ads, SEO content, design, PR) for you as a vendor. A fractional CMO leads your marketing function and may use agencies as suppliers underneath them. Different layers of the stack.

Which is right for a $5M ARR SaaS startup?

Usually a fractional CMO with select agency support underneath. A consultant alone won't ship enough. An agency alone won't lead. The hybrid - a fractional leading the strategy with an agency executing specific channels - is often the right shape.

Fractional CMO vs Marketing Consultant vs Agency: What's the Difference?

Three different shapes for buying outside marketing help. Different costs, different commitments, different outcomes. Here's the clean breakdown.

Founders confuse these three constantly. The pitches sound similar. The price ranges overlap. The deliverables look like they could be the same thing. They're not.

Here's the actual distinction, what each one is built to do, and how to pick the right one.

The clean definition of each

	Fractional CMO	Marketing Consultant	Agency
What they do	Lead marketing function on ongoing basis	Solve specific defined problems on a project basis	Execute specific marketing channels as a vendor
Commitment	Months (6-12+)	Weeks to months (1-3 typically)	Ongoing retainer or per-project
Output	Strategy + execution + team coaching	Deliverable + recommendation	Campaigns, content, ads, design
Accountability	The number	The deliverable	The output (their channel)
Cost	$5K-$20K/mo retainer	$10K-$50K project	$5K-$50K/mo retainer or $$$ per project

When each one is right

Hire a fractional CMO when:

You don't have a senior marketing leader
You need ongoing leadership, not a one-time fix
Your team can execute but needs senior strategy and coaching
You're not ready (or able) to commit to a $300K+ full-time CMO

Hire a marketing consultant when:

You have a specific defined problem (positioning, messaging, ICP) that needs senior senior expertise
You have the team to execute the recommendation
The problem is bounded - "rewrite our positioning," "audit our funnel," "build our pricing strategy"
You don't need ongoing leadership, just a brain for a defined window

Hire an agency when:

You have a defined channel that needs specialized execution (paid ads, SEO, PR, design, content production at scale)
You have strategy and leadership in place (in-house or fractional) to brief them well
The work is repeatable and benefits from a specialist team
Hiring in-house for that channel would cost more than the agency for the same output

The biggest founder mistake

Hiring an agency when you actually need a fractional CMO. Founders feel marketing isn't working, hire an agency to "do marketing," and the agency ships impressive-looking outputs in their channel - but the channel doesn't matter because the underlying strategy is broken.

Agencies are great when you know what you're trying to do. They're expensive ways to make the wrong thing prettier when you don't.

The fix: get a senior marketing brain in the room first - fractional CMO or consultant - to define what's actually broken. Then hire the agency to execute the channels that need executing.

The hybrid that works best

For most funded SaaS startups between $2M and $15M ARR, the right stack is:

Fractional CMO setting strategy, picking priorities, coaching the team
Select agency support for specific specialized channels (paid ads, PR, design)
In-house team executing the rest

Consultants are usually overkill in this stack unless you have a specific big problem that needs solving in a defined window (like a major repositioning). Pure agency-only setups break down because nobody's running the strategy. Pure in-house-only setups break down because the senior judgment isn't there yet.

The honest bottom line

Three different shapes for three different problems. Match the shape to the problem you actually have, not to the marketing pitch that sounded best.

If you're not sure which one you need, the cheapest way to find out is a 30-minute conversation with someone who's worn all three hats. Fractional vs consultant vs agency isn't a religious debate - it's a fit question.

Not sure which shape you need?

If you're weighing fractional, consultant, and agency options for your marketing - that's a 30-minute call. I'll tell you which one fits, even if it isn't me.

dan@danwestmoreland.com

Dan Westmoreland

Marketing operator. Built inbound engines at Deputy, Northpass (acquired by Gainsight), and Curve. Believes brand equals demand, and demand that comes to you compounds. LinkedIn