Fractional CMO vs marketing agency: which do you need?

Short answer: a marketing agency executes: campaigns, creative, media, content and search. A fractional CMO owns the strategy and is accountable for what marketing contributes to revenue. In Australia the two often cost about the same each month: typically A$10,000–A$18,000 for a fractional CMO one to two days a week, and A$5,000–A$15,000 plus media for a growing business’s agency retainer. If your agency is busy but nobody can say what’s working, you’re usually missing a CMO, not a better agency, and the CMO’s job is to direct the agency, not replace it.

I’ve sat on both sides of this. Earlier in my career I was Head of Integrated Technology for Asia-Pacific and Japan at an integrated B2B marketing agency, leading a team across Melbourne, Sydney and Singapore. Later I was the client, as Chief Revenue & Marketing Officer of an ASX-listed technology company, and as the person coordinating fourteen external agencies on product launches at a global consumer brand.

So I’m not here to talk down agencies. A good one is worth every dollar. The trouble starts when a business asks an agency to do a job it isn’t set up to do.

Fractional CMO vs marketing agency at a glance

Dimension	Fractional CMO	Marketing agency
Main job	Decides what marketing should achieve, for whom and how	Delivers the work: campaigns, creative, media, content, SEO
Accountable for	Marketing’s contribution to pipeline and revenue	The deliverables and channel results in the brief
Where they sit	Inside your leadership team	Outside it, as a supplier with other clients
What they see	The whole business: sales, pricing, product and the board	The channels and briefs they’re given
Typical commitment	One to three days a week, usually 6–12 months	A project or an ongoing retainer
How it’s paid	A fixed monthly fee	Retainer, project fee or a share of media spend, quoted on scope
Typical cost in Australia	A$10,000–A$18,000 a month for one to two days a week; my seats start from A$12,000 + GST	A$5,000–A$15,000 a month for a growing business, plus media spend
On its own, you get	Strategy without the specialist hands to execute it at scale	Activity without anyone senior setting direction or judging it

The real difference: execution vs accountability

An agency’s natural question is “what would you like us to do?” That’s the right question for a supplier. The problem is that in many mid-market businesses, nobody inside is asking the one before it: “should we be doing this at all?”

Agencies report on what they control: impressions, clicks, cost per lead, rankings. All of those can go up while revenue stays flat. That isn’t dishonesty. It’s the brief.

A CMO is measured on something different: whether marketing moves the numbers the board cares about. When an agency answers to a CEO without marketing experience, or to a junior coordinator, it ends up writing its own brief. That isn’t fair on the agency, and it isn’t good for you.

When an agency on its own is enough

You may not need a CMO at all if:

• Your strategy is clear and written down. Positioning, target customers and pricing are agreed, and sales would describe them the same way.
• You have an experienced marketing lead. Someone who can write a strong brief and tell good work from busy work.
• The need is specific. A website rebuild, a campaign, paid search or a rebrand with a clear scope.
• Sales and marketing agree on what a good lead looks like.

When you need a fractional CMO

The signs that the gap is senior ownership rather than execution:

• You’ve changed agencies and the results haven’t changed. Two or three agencies in, the common factor is usually the brief.
• The monthly report is full of activity and nobody can link it to pipeline.
• Your positioning shifts depending on who you ask. The website, the sales deck and the agency’s work all tell a slightly different story.
• The CEO is the de facto head of marketing. Approving creative late at night, on top of the day job.
• A step change is coming. A new market, a new product, a raise or an exit, and the story has to hold up.

When you need both

For most of the mid-market businesses I speak with, this is the real answer. Few have enough marketing work for a full-time CMO plus an in-house team covering every specialist skill.

An agency gives you specialists, such as media buyers, designers and search experts, that you couldn’t justify hiring one by one. A fractional CMO gives you the senior owner who decides what those specialists should work on and holds the work to account.

So the question is rarely “agency or CMO?” It’s whether anyone senior is directing the money you already spend with agencies.

How a fractional CMO works with your agency

When I step into a fractional CMO seat alongside an existing agency, the work usually looks like this:

1. Set the strategy, then the brief. Positioning, target customers, priorities and what success means in revenue terms. The agency gets a brief worth answering.
2. Agree measures that connect to revenue. Channel metrics still matter, but they sit underneath pipeline and revenue, not in place of them.
3. Run a rhythm. A regular working session with the agency, a concise monthly view for the CEO and board, and a quarterly reset of priorities. I describe that cadence in how I work.
4. Join up multiple agencies. At a global consumer brand, each launch meant coordinating eight internal teams, four regions and fourteen external agencies. I turned the sequence into a single automated workflow, so one intake form now triggers 450 tasks and every agency knows what it owns.
5. Translate between the business and the suppliers. On IPO campaigns for an ASX-listed investment management group, part of my role was managing internal expectations of external marketing and technology suppliers, so the business got what it needed from them, on time.

Having run an agency team, I know most underperformance starts on the client side. Fix the brief and the measures first, and you often find you already have the right agency.

When neither is the answer

Sometimes the problem isn’t marketing at all:

• If pricing, the sales process or the product is the real issue, more or better marketing won’t fix it. You need someone who owns revenue end to end. I’ve written about when to hire a fractional CRO, and I take on both seats as a fractional CRO and CMO.
• If nobody can say what the problem is, start with a diagnosis. My diagnostic sprint is about two weeks of senior time and ends with board-ready findings and a 90-day plan, from A$15,000 + GST.
• If you already have a strong marketing lead who needs a senior sounding board rather than a boss, an advisory retainer from A$5,000 + GST a month may be enough.

What does a fractional CMO cost compared with an agency or an in-house team?

The monthly figures are closer than most people expect. What you get for them is not.

Option	Typical cost in Australia (ex GST)	What you get	Source
Marketing agency retainer	A$1,500–A$5,000 a month for a small business; A$5,000–A$15,000 for a growing SME; media spend on top	Specialist execution across the channels in the brief	BFJ Digital, one agency’s 2026 guide
In-house marketing manager	About A$112,000 average advertised salary; about A$145,000 a year (A$12,100 a month) with on-costs	One person running campaigns and suppliers, full time	SEEK, October 2026
Fractional CMO, one to two days a week	A$10,000–A$18,000 a month	Senior ownership of the strategy and of marketing’s contribution to revenue	Fractionus
Full-time CMO	Average base about A$182,000, plus a bonus of A$2,000–A$98,000; about A$237,000 a year (A$19,800 a month) with on-costs, before bonus and recruitment	Senior ownership, five days a week	Payscale, 57 profiles

On-costs are taken at 30% of base, the middle of the 25–35% that super, payroll tax, leave and workers’ compensation add (Fractionus). Many agencies don’t publish their fees, so treat the agency row as a guide, not a price list. SEEK’s figure is the average across marketing manager job ads in marketing and communications, and some ads include super.

Three things stand out:

• An agency and a fractional CMO can cost about the same each month, but they aren’t substitutes. One buys hands, the other buys judgement. Replacing one with the other usually leaves you with the gap you started with.
• A marketing manager isn’t a cheaper CMO. For a similar monthly cost you get five days of coordination and execution, not senior ownership. It’s the right hire once the strategy is set and someone senior has written it down.
• A full-time CMO costs about A$237,000 a year before bonus and recruitment. For many mid-market businesses, one or two days a week of senior direction, plus the agency they already pay, is the better use of that money.

My fractional CMO seats start from A$12,000 + GST a month for about one day a week, as part of my fractional CMO and CRO role. For more on market rates and how they compare with a full-time executive, see what a fractional CRO or CMO costs in Australia and what a fractional executive costs in Australia, or run your own numbers in the fractional executive cost calculator.

A quick checklist

Work through these with your leadership team:

1. Can you state your positioning and target customer in two sentences, and would sales say the same thing?
2. Does someone senior write the agency brief and judge the work against it?
3. Can you link what you spend with agencies to pipeline and revenue?
4. Have you changed agencies without changing the results?
5. Is the CEO the default head of marketing?
6. Is a new market, product, raise or exit on the horizon?

If you answered yes to the first three and no to the last three, a good agency may be all you need. If not, the gap is probably senior ownership.

The bottom line

An agency and a fractional CMO often cost about the same each month in Australia, but they solve different problems. If the strategy is clear and someone senior is directing the work, a good agency may be all you need. If the agency is busy and nobody can link its work to revenue, the gap is senior ownership, and a fractional CMO one or two days a week usually fills it for well under the cost of a full-time hire.

If you can’t tell whether you have an agency problem or a leadership problem, that’s a normal place to start. Book a 30-minute call and I’ll give you a straight answer, even if it’s “keep your agency and write it a better brief”. You can also read how I work as a fractional CMO and CRO, and if you decide to bring someone in, how to brief a fractional executive sets out what to write down first.