Most businesses that go looking for outside marketing help start with the wrong question. They ask "who should we hire?" when the useful question is "what job needs doing?" The answer to the second question tells you the answer to the first, and it is usually obvious once you have it.
A fractional CMO, a marketing agency and a marketing consultant are not three flavours of the same thing. They sell different products, sit in different places in your business, carry different accountability and cost different amounts. Get the fit right and any of the three can be the best money you spend this year. Get it wrong and you end up with a strategy document nobody implements, an agency producing work nobody has judged, or a senior leader you are paying to supervise a gap in execution capacity.
I have been all three. I have run marketing functions as a CMO, led agency-side teams, and worked as an independent consultant. Today most of my work is fractional CMO engagements, so treat what follows with that in mind, and notice that the honest answer in several of the scenarios below is not "hire a fractional CMO".
If you have not yet worked out whether you have a capability problem, a capacity problem or a leadership problem, start with the diagnostic in my guide to hiring a fractional CMO in Australia. This article picks up from there and answers the next question: given the problem, which model fits.
What each one is actually selling
Strip away the pitch decks and each of the three is selling one primary thing.
A marketing consultant sells expertise, delivered as advice. You bring a defined question or a defined problem, the consultant brings depth in that area and a point of view, and the output is a recommendation, a strategy, a review or a plan. Some consultants will roll their sleeves up and help implement; the good ones are clear about where that line sits. The engagement is typically scoped, time-boxed and priced as a project or a day rate. When it ends, the consultant leaves, and the plan is yours to run.
A marketing agency sells execution capacity. Specialists across paid media, search, content, creative, social, email and web, available on a retainer or a project basis, producing work at a volume and speed you could not sustain in-house. The best agencies will also offer strategy, but it is strategy in service of the channels they run. The agency is accountable for outputs: campaigns shipped, content published, media managed within budget. It is rarely accountable for whether the whole marketing function is pointed at the right commercial outcome, because that was never its job.
A fractional CMO sells senior leadership, with accountability for outcomes. A part-time chief marketing officer, usually one to three days a week, who owns the marketing function the way a full-time CMO would: the strategy, the plan, the budget, the team, the agencies and the numbers. They sit in your leadership meetings, they are answerable for pipeline and revenue contribution, and they stay. The engagement is ongoing, usually a three to six month initial term that extends if it is working.
The one-line version: consultants advise, agencies produce, fractional CMOs lead. Everything that follows is a consequence of that.
The comparison, side by side
| Marketing consultant | Marketing agency | Fractional CMO | |
|---|---|---|---|
| Primary product | Expertise and advice | Execution capacity | Leadership and accountability |
| Where they sit | Outside, brought in for a scoped question | Outside, running defined channels | Inside, part of your leadership team |
| Accountable for | Quality of the recommendation | Quality and delivery of the work | Commercial outcome of the whole function |
| Typical engagement | Project or day rate, weeks to a few months | Monthly retainer, six to twelve month terms | Ongoing, one to three days a week, three to six month initial term |
| Manages your team and agencies | No | No (they are one of the agencies) | Yes |
| Owns the marketing budget | No | Their share of it | Yes |
| Best when | The strategy is unclear on a specific front | The strategy is clear and delivery is the gap | Nobody senior owns marketing as a commercial function |
| Wrong when | You need someone to make it happen after the advice | You have no strategy to brief them against | The problem is hands, not leadership |
What they cost in Australia
Costs vary widely and every provider publishes ranges that flatter their own model, so treat the following as orientation rather than a rate card.
Consultants in Australia typically charge a day rate or a fixed project fee. Experienced senior practitioners generally sit in the $1,500 to $2,500 per day range, with strategy projects running from a few days to a few weeks. A well-scoped strategy engagement therefore lands somewhere between $10,000 and $40,000 depending on depth and seniority. The cost is predictable because it is bounded.
Agencies are usually retained monthly. Small business retainers can start around $3,000 to $5,000 a month for a narrow channel scope; a mid-market retainer covering several channels commonly runs $10,000 to $30,000 a month, and enterprise arrangements go well beyond that. The retainer sits on top of media spend, production costs and tooling, which is the part that surprises people who have not run an agency relationship before.
Fractional CMOs in Australia generally charge between $5,000 and $20,000 a month depending on days per week and seniority. I have set out the full picture, including a sourced comparison against the true year-one cost of a full-time CMO in Sydney, in my fractional CMO cost guide. The short version is that a full-time CMO on a $300,000 base costs closer to $350,000 in year one once superannuation, payroll tax and on-costs are included, and a two-day fractional engagement runs at roughly a third of that.
The trap is comparing these numbers to each other as if they were substitutes. A $25,000 consulting project and a $25,000 agency quarter and a $25,000 fractional CMO quarter buy three completely different things. The cheapest option is the one that solves the problem you have; the most expensive option is the one that does not, at any price.
The five-question test
Work through these in order. Most businesses know the answer by question three.
1. Can you write the brief?
If you can describe clearly what you want done, which channels, what the message is, what success looks like and by when, you have a strategy. What you need is someone to execute it. That is an agency's job, or an in-house hire, and a fractional CMO would be an expensive way to confirm the brief you already wrote.
If you cannot write the brief, stop. Hiring an agency without one produces activity without direction. You need either a consultant to help you write it, or a fractional CMO to write it and then own it.
2. Is the problem narrow or whole-of-function?
A narrow problem has a name: the website does not convert, the positioning is muddled, paid search is burning money, the brand needs a refresh before a raise. Narrow problems suit consultants, because depth in one area is exactly what a consultant sells, and a scoped project is the right shape.
A whole-of-function problem sounds different. Marketing is busy but nobody can explain what it contributes. Spend goes out and nobody connects it to pipeline. Three agencies are producing work and nobody is judging it against a plan. That is a leadership gap, and consultants and agencies cannot fill it because neither of them is positioned to.
3. Who will own the outcome after the engagement starts?
This is the question that separates the three most cleanly. A consultant owns the quality of the advice. An agency owns the quality of the work. A fractional CMO owns the result.
If you have a founder, CEO or senior executive who is genuinely going to own marketing outcomes and has the time and the judgement to direct agencies and act on advice, you may not need a fractional CMO. If nobody in the business is going to own it, no amount of good advice or good execution will stick.
4. Do you already have people who need leading?
If you have an in-house marketer or two, or an agency relationship that is drifting, the question is who develops them, directs them and holds them to account. Agencies do not manage your other agencies. Consultants do not manage your team. A fractional CMO does both, and for many businesses the biggest early return is not new activity but existing spend suddenly being pointed somewhere. If you are unsure what your current team can actually do, the free marketing capability assessment is a quick way to find out before you decide who to bring in.
If you have no team and no agencies, a fractional CMO's first job will be to build that capability around you, which is legitimate, but the sequencing matters: leadership first, then delivery capacity that the leader briefs and manages.
5. How long does this need to last?
Consultants suit finite questions. Agencies suit ongoing production. A fractional CMO suits an ongoing leadership need with an end point in sight: typically six to eighteen months, during which the business either grows into a full-time hire or builds a function that runs on less senior oversight. If you expect to need constant senior presence for years, the honest answer may be a full-time CMO, and a good fractional practitioner will tell you so.
Four combinations that work
The either-or framing is misleading. Most healthy marketing functions in the $2 million to $50 million revenue range use more than one of these, and the combinations are more instructive than the individual models.
Fractional CMO plus agency. The most common productive pairing. The fractional CMO sets strategy, writes the briefs, holds the agency to commercial outcomes and stops the retainer from drifting into activity for its own sake. Many agencies quietly prefer this arrangement because a senior client-side leader makes them better. If you already have an agency and results are underwhelming, adding senior leadership above it is usually a better move than switching agencies.
Consultant, then agency. A scoped strategy project produces the brief, and the agency executes against it. This works well for narrow problems and for businesses with a capable internal owner. The failure mode is the gap between the two: the consultant leaves, the agency is briefed on a document rather than by a person, and nobody is adjusting the plan as reality arrives.
Fractional CMO plus in-house team. The fractional CMO leads and develops a small internal team, and either builds their capability so the function holds without them, or grows the team to the point where a full-time leader is justified. This is the shape most engagements take when the goal is a lasting function rather than a campaign.
Consultant inside a fractional engagement. Even with a fractional CMO in place, specific deep questions sometimes warrant a specialist: a pricing review, a research programme, a brand identity project. The fractional CMO scopes and manages the consultant, and the business gets depth without losing direction.
The combination that does not work is agency on top of agency with nobody senior in between. Adding a second or third retainer to a function that lacks a strategy adds complexity, not clarity, and it is one of the most common patterns I see when a new engagement starts.
The fourth door: hiring full time
A full-time CMO is the right answer more often than fractional practitioners like to admit. If you have a marketing team of more than a handful of people, significant budget, a complex product or category, and a need for constant presence in the leadership room, the fractional model may simply be the wrong shape. The cost guide linked above sets out what that hire really costs in Australia; the point here is that the decision is about presence and permanence, not price. If the leadership need is full-time and permanent, pay for it.
Where the fractional model earns its place is the long stretch before that point: businesses that need CMO-grade judgement now but cannot justify or attract a full-time executive yet, or that need a senior operator for a defined transformation, turnaround or growth phase.
A note on titles, because the market has muddied them
The fractional CMO label has grown quickly in Australia and it is now used loosely. Consultants who have never run a marketing function call themselves fractional CMOs because the title commands a higher rate. Agencies package a senior account director as a "fractional CMO service". Freelancers describe project work as fractional leadership.
None of that is dishonest in itself, but it means the title alone tells you almost nothing. Ask what the person has actually led, at what scale, with what accountability. Ask whether they will sit in your leadership meeting and own the number, or produce a plan and leave. Ask who they have managed and what happened to those teams. The hiring guide has the full set of questions and the red flags; the short version is that you are hiring for the engagement shape, not the label.
The same applies in the other direction. A marketing consultant in Sydney with genuine CMO experience may be exactly what you need for a scoped strategic question, and there is nothing lesser about buying advice when advice is the thing you need.
Where AI changes the calculation
One shift worth naming for 2026. A meaningful share of what agencies sold five years ago as execution capacity, particularly in content production, reporting, creative iteration and campaign operations, can now be done faster and cheaper by a small team with the right AI tooling and someone senior who knows how to direct it. That does not make agencies redundant; it changes what you should be buying from them, and it raises the value of leadership that understands the technology well enough to redesign the work.
I have written separately about what an AI-native fractional CMO actually does differently. For the purposes of this comparison, the practical implication is that the "capacity" answer is less often "hire an agency" and more often "get someone senior to rebuild how the work gets done, then buy the capacity you still need".
How to choose, in one paragraph
If the question is narrow and you have someone who will own the answer, hire a consultant. If the strategy is clear and delivery is the gap, hire an agency and brief it well. If nobody senior owns marketing as a commercial function and the whole thing needs pointing at revenue, hire a fractional CMO, and let them decide which agencies and specialists you need underneath. If the leadership need is permanent and full-time, hire a CMO. And if you are not sure which of those describes you, that uncertainty is itself the diagnosis, and it is the leadership one.
Frequently asked questions
What is the difference between a fractional CMO and a marketing consultant?
A marketing consultant delivers expertise as advice, usually as a scoped project, and leaves the implementation to you. A fractional CMO is an ongoing part-time executive who owns the marketing function, leads the team and agencies, and is accountable for commercial outcomes. The distinction is ownership: consultants are responsible for the quality of the recommendation, fractional CMOs for the result.
What is the difference between a fractional CMO and a marketing agency?
An agency sells execution capacity across channels and is accountable for the work it produces. A fractional CMO sells senior leadership and is accountable for the marketing function as a whole, including directing and managing agencies. The two are complementary rather than competing: an agency needs a strategy and a brief, and a fractional CMO is often the person who provides them.
Can a fractional CMO manage my existing agency?
Yes, and it is one of the most common reasons businesses engage one. A fractional CMO will review the agency's scope and performance, rewrite the brief where needed, and hold the agency to commercial outcomes rather than activity. Results from an existing agency frequently improve without changing agencies at all.
Is a marketing consultant cheaper than a fractional CMO?
For a scoped project, usually yes, because a consulting engagement is bounded and a fractional engagement is ongoing. But the two buy different things. A consultant is cheaper if you need advice; a fractional CMO is cheaper if you need leadership, because the alternative is a full-time executive at several times the cost.
When should I hire an agency instead of a fractional CMO?
When the strategy is clear, the brief can be written, someone in the business will own the outcome, and the gap is delivery capacity. If you cannot write the brief, an agency will produce activity without direction and you should address the leadership gap first.
Can I use a fractional CMO and an agency at the same time?
That is the most common productive arrangement. The fractional CMO sets direction, briefs and manages the agency, and connects its output to pipeline and revenue. Most agencies do better work with a senior client-side leader in place.
How do I know if I need a fractional CMO, an agency or a consultant?
Ask five questions in order: can you write the brief, is the problem narrow or whole-of-function, who will own the outcome, do you have people who need leading, and how long does this need to last. Narrow problems with an internal owner suit consultants; clear strategies with a delivery gap suit agencies; whole-of-function problems with no senior owner suit fractional CMOs.
Neil Collins is a fractional CMO and marketing consultant based in Sydney, working with funded startups, scale-ups and enterprise organisations across Australia, the UK and the US. If you are weighing up which model fits, book a short call and I will tell you which one you need, including if it is not me.