A fractional executive works part time, on an ongoing basis, embedded in the business doing the actual job week after week. A consultant is engaged for a defined project or period, delivers a recommendation or a piece of work, then leaves. An interim executive works full time, but only until a permanent hire is found, usually covering a gap left by someone who's departed. Same seniority in all three cases. Completely different jobs.
I get asked this constantly, by companies trying to work out what they actually need, and by operators trying to work out what to call themselves. Both groups usually default to whichever word they heard first, which is how you end up with a "fractional consultant" doing six weeks of project work, or an "interim CMO" who's clearly there for the long haul on two days a week. The label matters because it sets expectations on both sides of the table before the engagement even starts.
The Three Models, Side by Side
Here's the comparison I actually use when I'm explaining this on a call.
| Dimension | Fractional | Consultant | Interim |
|---|---|---|---|
| Engagement length | Ongoing, often 12+ months, no fixed end date | Project-based, weeks to a few months | Fixed term, until a permanent hire starts (usually 3-9 months) |
| Hours | Part time, typically 1-3 days a week | Variable, often bursty around deliverables | Full time |
| Ongoing vs one-off | Ongoing operating role | One-off engagement or deliverable | Temporary but full-time role |
| Hands-on vs advisory | Hands-on, does the work | Advisory, hands over a recommendation | Hands-on, runs the function |
| Embedded vs external | Embedded in the team, in the tools, in the standups | Works from the outside in | Fully embedded, effectively the employee |
| Typical use case | Ongoing leadership a growing company can't yet justify full time | A specific problem needing outside expertise: pricing, M&A, a system rollout | Covering parental leave, a sudden departure, or a search that's taking too long |
| How they're paid | Retainer, day rate or monthly fee, ongoing | Project fee or day rate, tied to scope | Day rate or salary equivalent, full time hours |
The pricing conversation gives the model away too. Consultants quote a project fee against a defined scope of work, so the fee stops when the deliverable lands. Interim executives are priced like the full-time hire they're standing in for, usually a day rate that annualises close to the salary they're covering. Fractional sits in between and works differently again: a monthly retainer or day rate tied to a set number of days a week, running month to month or on a rolling term, because the value isn't a single deliverable, it's the ongoing leadership. If someone's quoting you a fixed project fee for what's supposed to be an ongoing part-time role, that's usually the first sign the engagement has been scoped as consulting, not fractional.
Why Fractional Isn't Consulting With a Rebrand
The line I hear a lot: fractional is just consulting, someone gave it a better name for LinkedIn. I don't buy it, and it's not because I've got a stake in the term (I do, but that's not the reason).
A consultant's job is to diagnose and recommend. Their output is a deck, a strategy, a report. What happens after they leave the room isn't really their problem, it's baked into the scope of the engagement from day one. A fractional executive's output is the actual result: pipeline built, hires made, systems shipped, the number hit or missed. You're not paying for advice. You're paying for someone to sit in the seat and do the job, just not five days a week.
That's a different skill set too, not just a different contract. I've sat in the advisory seat and the operating seat for the same type of company, sometimes in the same year, and they are not the same job wearing a different jacket. Plenty of excellent consultants would make average fractional executives, because their whole career has trained them to recommend rather than run something. And plenty of great operators make forgettable consultants, because they want to build the thing, not write forty slides about it.
When to Choose Each
If you're the one hiring, the decision usually comes down to three questions: is this a role or a project, do you need it full time, and how long do you actually need it for.
- Choose fractional when you need ongoing senior leadership on a function, but the company isn't at the size or stage to justify a full-time hire yet, or the role genuinely doesn't need five days a week forever. This is most early and growth-stage companies needing their first VP Sales, CFO, or CMO.
- Choose a consultant when you have a specific, boundaried problem with a clear start and end: a pricing review, an M&A process, a systems migration, a one-off GTM strategy refresh. You want an outside diagnosis and a plan, not someone doing the job long-term.
- Choose interim when you have an actual full-time role and a gap. Someone's just left it, or they're on leave, and you need a capable senior person in the seat now while you run a proper search for the permanent hire. Interim is about covering a seat, not filling a permanent capability gap with a part-time fix.
Get this wrong in either direction and it shows up fast. Hire a consultant when you actually needed a fractional executive, and you get a beautiful strategy document nobody executes. Hire fractional when you actually needed interim, and you get someone doing two days of work on a job that needed five, while the search for a permanent hire quietly stalls because nobody feels the pressure of the empty seat.
If You're the Operator, Not the Buyer
If you're on the other side of this, working out what to call yourself, be honest about which one you actually are. If you're doing engagements with a clear start, end and deliverable, you're consulting, and that's a perfectly good business to run. If you're working full-time hours covering someone's seat until they backfill it, you're interim, and you should price and scope it that way. Fractional is the specific claim that you do the job itself, part time, on an ongoing basis, embedded in someone's business like a real member of the team.
Call yourself fractional only if that's true. Clients can tell within a month if the label doesn't match how you actually work, and the mismatch costs you the renewal. It also cuts the other way. I've met plenty of interim executives who ran a great twelve-month gap-cover engagement, then realised the client didn't actually need them back at five days a week once a permanent hire was found, they needed them at two, on an ongoing basis. That's not interim anymore. That's the point where you should be calling it fractional and repricing it as one. If you're building toward a genuine fractional practice, whichever direction you're coming from, the mechanics of making that switch (pricing, positioning, finding the first few clients) are covered in 6 Steps to Becoming a Fractional Executive.
None of this needs to be complicated once you strip the labels back to what's actually happening: how long, how many hours, and who owns the output. Get that right and the rest of the conversation, pricing, scope, expectations, sorts itself out. If you want to see the model applied to one specific function, What Is a Fractional CFO? walks through it in detail.
If you're already operating fractional or interim and want to talk to people who've made the same call, that's exactly what we built FEC for. Apply to join.