Fractional, Interim or Consultant Is Two Decisions

Three columns on one page

The comparison usually arrives as a table. Three columns, fractional, interim and consultant, and rows for day rate, days per week, contract length and notice period. A leadership team with a gap at the top reads across the rows and picks the column that fits the budget. The table is accurate, and it hides the structure of the decision.

The three arrangements do not sit on one axis: the first decision is whether the gap is a seat or a question, and only once it is a seat does the choice between interim and fractional begin. A consultant answers a question. Interim and fractional executives both hold a seat. Setting all three side by side invites a company to weigh a report against an owner, which is the mistake the seat-or-question test exists to prevent.

That first decision has its own note. This one takes the second. A company has established that it is short of an owner rather than an answer, and now has to decide what kind of owner to bring in while it works out the permanent one. The pattern below is composited from scaling companies in payments, digital banking and B2B software, with identifying detail removed.

Load before rate

An interim executive is full-time for a defined period. A fractional executive is part-time and open-ended, often two or three days a week for a year or more. The difference in day rate gets most of the attention. The difference that decides the outcome is load: how many hours of decisions the seat produces in an ordinary week.

Load can be read from inside the company before anyone is approached. Where we have seen it read well, the leadership team listed what had queued for the empty seat over the previous month:

• the decisions that waited, and how long each one waited
• the meetings the seat would have chaired
• the people who reported into it and went to someone else instead
• the outside parties (customers, a regulator, a lender) that expect a named counterpart

A finance seat in a forty-person software company might produce a monthly close, a board pack and a handful of spending approvals. That is a part-time load, and a fractional finance leader two days a week can carry it with room to spare. The same seat in a regulated lender, with a treasury position to manage daily and a supervisor expecting a named counterpart, is a full-time load whatever the headcount. The size of the company is a poor proxy for the size of the seat; the queue of decisions is a direct reading of it.

What part-time does to a full-time seat

Put a fractional executive into a full-time seat and the arrangement turns into a queue. Decisions wait for the days the executive is in, people below learn to hold work until Tuesday, and the function runs at the speed of the calendar rather than the business. Nobody chose that cadence. It followed from the contract.

Interim holds a known shape

Interim works best on a seat whose shape the company already knows. A head of operations has left a function that runs. The remit, the reporting lines and the decision rights are written down or at least understood, and the job is to keep decisions flowing and prepare the seat for a successor. A good interim executive changes little on purpose. They are paid to make the vacancy invisible and to hand over a seat in better order than they found it.

That is also the limit. Interim engagements are short by design, and an interim executive asked to invent a role in a few months tends to build it around their own working method, then leave. The successor inherits a remit shaped by someone who was never going to hold it.

Fractional builds a seat that is not yet full-sized

Fractional fits the opposite case: a seat the company has not had before, or not at this level. The first head of revenue in a founder-led business. The first finance leader above a bookkeeper. Here the work includes designing the seat, deciding what it owns and what it hands back to the founder, and the part-time load leaves room to do that alongside running it. A fractional executive is most useful where the seat itself is still part of the question, and most expensive where the company only needed it held.

The two readings combine into four cases:

• full-time load, settled remit: interim, briefed to hold the seat and hand it over
• part-time load, remit still being designed: fractional, briefed to build the seat
• full-time load, remit still being designed: the permanent hire is overdue, and an interim only works with the design written into the brief
• part-time load, settled remit: often neither, but a deputy given the seat's decision rights in writing

The third case is the hard one. Where it applies, the decision rights the interim needs are best written by role rather than by person, the way decision rights in a scaling company should be, so that they pass intact to the permanent hire.

The size of the company is a poor proxy for the size of the seat.

The interim who stayed

The common failure on the interim side is drift. A payments company brings in an interim chief operating officer for six months while it searches. The search stalls, the engagement is extended twice, and a year later the company is paying full-time rates for a seat whose load fell once the interim executive had cleared the backlog. The arrangement that was right in the first quarter had become the wrong one by the fourth, and nobody read the load again.

The fractional who was not there

The failure on the fractional side is absence at the moment it matters. A digital bank hires a fractional chief risk officer for two days a week, a fair reading of the seat in a quiet year. Then a product launch, an audit and a funding round arrive in the same quarter. The seat's load multiplies and the contract stays where it was. Neither arrangement is wrong on the day it starts; both go wrong when the load changes and the contract does not.

The remedy is the same in both cases. Each engagement carries a review date at which the load and the remit are read again, against the same list that justified the arrangement in the first place. That review is a decision about the company. It is not a performance review of the executive, and treating it as one is how a fixable mismatch becomes a lost relationship.

We do not place interim or fractional executives. Our consulting work under growth discipline sits before the placement: reading the queue at an empty seat, judging whether its remit is settled, and saying which arrangement the company is short of. The output is a written brief for the seat, with its load, its decision rights and its review date, that any search firm or placement network can work from.

A three-column table cannot say how much of the seat needs running or whether anyone yet knows its shape; both can be read inside the company before anyone is called. Leadership teams that want to make the same reading part of their own planning take it up as training.