For most of corporate history, hiring a chief marketing officer involved exactly one option. You found someone senior, agreed a salary large enough to make the finance director lie down and gave them a parking space with their title on it.
The fractional CMO has complicated things by offering the same seniority in instalments. Both models bring proper leadership, but they work very differently from week to week. The right choice depends on how much leadership you need and how much you can sensibly spend getting it.
The headline difference
Strip away the jargon and it comes down to ownership. A permanent CMO is yours, five days a week, on a contract with a notice period long enough to plan a wedding around. A fractional CMO is shared, typically working one to three days a week on a flexible retainer alongside a handful of other businesses.
Nearly every other difference follows from that one. Cost and availability shift depending on whose diary you’re sharing, and so does how decisions get made.
Time and availability
The permanent CMO is always in the building.
A permanent CMO is present for every leadership meeting and every crisis that arrives at 4 pm on a Friday. They’ll take the call, fix the problem and quietly cancel their weekend, which is one of the less advertised perks of the job.
The fractional CMO works in focused blocks
A fractional CMO is with you one to three days a week, sometimes less, with those days built around the moments that matter. Most stay reachable for urgent questions in between, although they won’t be on call in the way an employee would.
The limited time has a surprising side effect. With only a few days to play with, a fractional CMO simply can’t attend every meeting that could have been an email. As a result, priorities get settled with unusual speed.
Cost: a salary or a retainer
What a permanent CMO costs once you add it all up
According to PayScale, the average base salary for a UK CMO sits at around £103,000, with base pay ranging from roughly £53,000 to £178,000. Senior roles in larger businesses go comfortably beyond that, and the salary is only where the arithmetic starts.
Employer National Insurance adds 15% on earnings above the threshold, with pension contributions following close behind. Throw in a bonus scheme and a recruitment fee, and the full cost of a permanent CMO lands some distance from the figure in the job advert.
What a fractional CMO costs
Fractional CMOs normally charge a monthly retainer based on the number of days. The Fractionus 2026 rate guide puts UK retainers at around £6,000 to £16,000 a month, with no employer National Insurance or pension on top, since they aren’t on your payroll.
At the lower end, the saving against a full-time hire is considerable. At the upper end, a fractional CMO working most of the week can cost as much as a permanent one. That’s usually the moment to ask whether you’ve accidentally hired a full-time CMO with extra invoices.
Expertise: depth or breadth
A permanent CMO builds deep knowledge of one business. Over time, they learn your customers and products, along with the unwritten rules about which directors must never be copied into the same email.
A fractional CMO trades that depth for breadth. Working across several businesses means they see what’s working in other markets right now. Many also specialise, so you can hire someone who has already scaled a SaaS company or led a B2B rebrand. That outside view is most valuable when growth has stalled, because a blind spot is, by definition, quite hard to see from where you’re sitting.
How the working relationship differs
Meetings and decisions
A permanent CMO can weigh in on decisions as they happen, in meetings or over the office kettle. A fractional CMO needs more structure, so agree a rhythm early, such as a weekly team check-in and a monthly leadership review. Without one, decisions tend to wait politely in a queue until the next day in the business.
Onboarding and access
Permanent hires usually get a few weeks of onboarding and a welcome lunch with people whose names they’ll have forgotten by Thursday. A fractional CMO needs to be useful much sooner, so have your data and logins ready before they arrive. If your tracking needs work, our data insights team can get it in shape first, sparing them a month of asking why three reports show three different numbers.
Who runs the campaigns?
Neither type of CMO should be running campaigns personally, although some permanent ones find it hard to resist. A permanent CMO usually has a larger in-house team to delegate to. A fractional CMO can oversee campaigns perfectly well, but relies more on a small team and outside specialists to deliver them.
Commitment and continuity
A permanent CMO is invested in the business’s long-term future. They shape the culture and stay long enough to see big bets pay off, or at least long enough to explain convincingly why they didn’t. That continuity matters most for companies with large teams or long-term brand work.
A fractional CMO’s commitment is flexible on both sides, which suits businesses whose needs are still shifting. That said, it does mean planning for a handover. Many companies use a fractional CMO to build the team and processes, then hire a permanent leader to inherit something that already works.
Working with your agencies
Permanent CMOs often bring more work in-house over time, keeping agencies for specialist tasks. Fractional CMOs lean on agencies more, because they need a team they can direct in limited hours. In either set-up, the CMO sets the strategy and the agency is expected to deliver it, ideally without a forty-slide deck explaining why it hasn’t yet.
For search, the relationship works best when targets are tied to leads and revenue, with rankings treated as the route there. A specialist search marketing agency can take a CMO’s plan and turn it into visibility across Google and AI search, where buyers increasingly begin.
Which option suits your business?
A permanent CMO makes sense when you need full-time leadership for a large team and can commit to the cost for years. A fractional CMO suits businesses that need senior direction now, but not five days a week. If you’re unsure which camp you’re in, our guide to knowing when you’re ready for a fractional CMO walks through the signs.
Common questions
Can a fractional CMO become a permanent hire?
Some make the move once the business has grown into the role, while others help recruit their own permanent replacement. Agree upfront how either route would work, so the conversation doesn’t arrive as a surprise to anyone.
Is a fractional CMO cheaper than a full-time CMO?
For most growing businesses, the total cost comes out lower, because you’re paying for fewer days and none of the employer costs. The gap narrows as the days go up. Compare the full annual cost of each option instead of setting a day rate against a salary, since the two numbers rarely measure the same thing.
Choosing the right fit
A permanent CMO offers full-time focus and long-term continuity, at a price to match. A fractional CMO offers senior experience and flexibility, usually for considerably less, provided you’re comfortable sharing. The right choice is whichever matches the amount of leadership you need today. If you’re still learning the basics, start with our guide to what a fractional CMO is.
I should declare an interest here, since I offer the fractional option myself. Through our fractional CMO service, clients get a regular strategy call and scheduled on-site days, with a three-month minimum term before it rolls on. The part I’d argue makes it worthwhile is inspection. Having run Circulate’s delivery team since 2014, I can judge whether your agencies and in-house team are delivering, ours included. Book a free strategy session and we’ll work out whether fractional or permanent suits you better.
