The question I am asked with increasing frequency, particularly by owner-managers of businesses in the £1m to £10m turnover band, is whether they should engage a business consultant or bring in a fractional executive. The two structures are often presented as alternatives in the same conversation, and the framing implies they do roughly the same thing at different price points. They do not. They do entirely different things, and conflating them is the source of expensive owner-manager mistakes in both directions.
Here is the structural distinction that the market consistently muddies: a business consultant produces a diagnosis, a calibrated recommendation, and an implementation roadmap, and then disengages once the work is delivered. A fractional executive (a fractional CFO, CMO, COO, or similar) takes an ongoing operational role within the business, on a part-time basis, and is accountable for executing the function rather than for designing it. The consultant designs what needs to happen. The fractional executive does what needs to happen, week after week, as a member of the leadership team.
This piece honestly explains the structural distinction. It walks through what each engagement structure actually delivers, what the cost arithmetic looks like in practice, when each is the right choice, when sequencing them produces stronger outcomes than choosing between them, and how the related question of interim management fits into the picture.
What a Business Consultant Actually Does
A business consulting engagement, properly structured, has a defined start and a defined end. The consultant enters the business, conducts an operational diagnosis, identifies the binding constraint on performance, produces a calibrated recommendation addressing that constraint, develops an implementation roadmap, and either supports the early phase of implementation or hands over to the management team for execution. The engagement is project-based, the scope is defined in the engagement letter, and the consultancy’s accountability is for the quality of the diagnosis and the soundness of the recommendation.
At SGI, business consulting engagements are priced with fixed fees ranging from £500 for a Rapid 360 diagnostic to £1,500, £3,500, and £7,000 for the Starter, Growth, and Enterprise tiers, respectively. The economic logic is straightforward: the consultancy is paid for a defined piece of strategic and analytical work, and the deliverable is a calibrated path forward for the business to implement. The typical engagement runs from four to twelve weeks, depending on tier, and the typical measured outcome for a Growth-tier engagement is approximately £70,000 of combined cost reduction and new revenue over the twelve months following the engagement.
What the consulting engagement does not do is run the function on an ongoing basis. The consultant diagnoses why the finance function is producing late management accounts, recommends the required restructuring, and may support the recruitment of the right finance leader. The consultant does not then sit in the finance function week after week producing the management accounts. That work is somebody else’s job.
What a Fractional Executive Actually Does
A fractional executive, by contrast, takes an ongoing operational role within the business on a part-time basis. A fractional CFO typically commits two to four days a week to the business, attends leadership meetings as a member of the team, signs off on financial reporting, owns the management accounts process, manages the finance function, leads conversations with lenders and external advisors, and is accountable for the operational performance of the function rather than for designing it.
The structure is fundamentally different from consulting. The fractional executive is in the business rather than acting on the business. They are accountable for what happens week after week, not for producing a strategic recommendation. They build relationships with the team, customers, suppliers, and external stakeholders that an ongoing role requires, and those relationships compound over the course of the engagement.
Typical pricing for UK fractional executive engagements ranges from £3,000 to £8,000 per month, depending on seniority, days committed, and function. A fractional CFO at the senior end of the market in London, with prior CFO experience at PE-backed SMEs, will price at £6,000 to £8,000 per month for three to four days. A fractional CMO with a strong commercial track record will price similarly. A fractional COO, for the rarer engagements where the COO function is genuinely fractional rather than full-time, will price in the same band.
The annual cost of a fractional executive engagement, therefore, typically falls in the £40,000 to £100,000 range. This is materially more than a consulting engagement, and the comparison is meaningful only against the work the engagement actually delivers.
The Structural Distinction in One Sentence
The distinction is best stated as follows: a business consultant produces strategic and analytical work that the business then implements, whereas a fractional executive handles the ongoing operational work that the strategy entails.
Stated that way, the question of which to engage becomes much clearer. If the business needs to identify the binding constraint on margin, redesign customer mix, restructure pricing, evaluate a transformation programme, or produce a calibrated three-year plan, the work is consulting. If the business has a leadership gap in the finance, marketing, or operations function, needs an experienced executive to run the function on an ongoing basis without yet being able to justify a full-time hire, and needs the relationships and continuity that ongoing engagement produces, the work is a fractional executive.
The two engagements are not substitutes. They produce different outputs against different problems.
The Cost Arithmetic in Practice
The cost comparison between consulting and fractional executive engagement is often misframed, leading to poor decisions.
A consulting engagement at the SGI Growth tier costs £3,500 for the engagement, which typically runs eight to ten weeks. The engagement produces a defined strategic and analytical output. A fractional CFO at £5,000 per month, for twelve months, costs £60,000. The two figures are not comparable because they buy different things.
The honest comparison is between two scenarios. Scenario one is the business that needs to identify what to do strategically and then execute the recommendation using existing leadership capacity. The right engagement is consulting at £3,500. Scenario two is the business that has identified what to do strategically, knows it needs an experienced executive to run a function on an ongoing basis, and cannot yet justify a full-time hire at £120,000 to £180,000 per annum plus benefits. The right engagement is a fractional executive at £60,000 per annum.
The mistake I see repeatedly is that the business that engages a fractional executive when the actual problem is strategic and analytical pays £60,000 over twelve months for ongoing operational delivery against a strategy that has not been properly diagnosed, and ends the year with the function being executed competently against the wrong strategic direction. The fractional executive has done their job. The job was the wrong job.
The reverse mistake is a business that engages a consultant to produce a strategic recommendation, receives a competent diagnosis and roadmap, and then has no internal leadership capacity to execute it. The consulting engagement was sound. The business lacked the operational structure to translate the strategy into sustained execution. Six months later, the recommendation has not been implemented, and the consulting fee has not produced a financial outcome because the operational gap was never closed.
How to Sequence Them Correctly
The strongest pattern I see in the SGI portfolio, and the one I recommend in the substantial majority of cases, is to sequence consulting and fractional executive engagement rather than choose between them.
The sequence is approximately as follows. Engage consulting first to diagnose the business’s binding constraint, determine whether it is strategic, operational, or leadership-related, and produce a calibrated recommendation. If the recommendation surfaces a leadership gap in a specific function (which it frequently does), the consulting engagement produces a clear specification of the fractional role required, including the number of days per week, scope of responsibility, required seniority, and expected outcomes. The business then engages the fractional executive against that specification rather than against an abstract sense that they need senior help.
This sequence avoids both of the failure modes above. The consulting engagement provides the strategic spine. The fractional executive engagement provides ongoing operational execution aligned with the strategy. The cost of the combined engagement is the consulting fee (typically £3,500 to £7,000) plus the fractional executive cost (typically £40,000 to £80,000 per annum), and the combined value is materially higher than either engagement alone.
For SGI clients across multiple sectors, this sequence has produced consistent outcomes. When we worked with Velani Hospitality Group through the 180% revenue growth period, the early consulting engagements diagnosed the binding constraints across unit-level economics, head office function design, and supplier infrastructure. The diagnoses then specified the operational leadership required to execute on each constraint, and the business made appropriate hires (some full-time, some fractional) to meet those specifications. The sequence produced an executable plan, executed against the right specifications, with the right leadership in the right roles.
Where Interim Management Fits In
A related question that owner-managers ask frequently is how interim management differs from fractional executive engagement. The distinction matters because the structures are similar enough to be confused with one another yet different enough to produce different outcomes.
An interim manager takes a temporary full-time role in the business, typically to fill a gap (a CEO who has left, a CFO on extended leave, a turnaround situation requiring senior leadership while a permanent appointment is identified). Interim engagements are usually full-time, usually for three to twelve months, and typically priced at £600 to £1,500 per day depending on seniority. The cost over a six-month engagement at £900 per day, five days a week, is approximately £108,000.
The fractional executive is different. The fractional executive takes a part-time role on an ongoing basis, not as a gap-filler but as the long-term operational solution for a function the business cannot yet support full-time. The engagement is typically not time-bound in advance and may run for several years if the business does not grow to a point where a full-time hire is needed.
The right structure depends on the underlying need. Interim management is the right choice when the business has a defined gap to fill on a full-time basis for a defined period. Fractional executive engagement is the right choice when the business has an ongoing leadership need that does not justify a full-time hire. Consulting is the right choice when the underlying question is strategic and analytical rather than operational and ongoing.
Common Mistakes Owner-Managers Make
Several patterns appear consistently when SME owner-managers attempt to choose between these structures without a clear framework.
The first is engaging a fractional executive to do strategic and analytical work. Fractional executives are typically operational leaders, not strategic consultants. They are excellent at running a function, often less effective at diagnosing what the function should look like in the first place. Owner-managers who engage a fractional CFO to design the finance function from scratch frequently get a competent finance function calibrated to the executive’s prior experience rather than to the specific business, and the result is operationally fine but strategically suboptimal.
The second is engaging a consultant to fill an ongoing operational role. Consultants are not operational leaders. They are excellent at producing strategic and analytical work, but are often less effective at running a function week after week. Owner-managers who attempt to stretch a consulting engagement into ongoing operational delivery typically find that the consultant disengages once the strategic work is complete, leaving the operational gap.
The third is engaging both simultaneously without sequencing. Running consulting and fractional executive engagements in parallel from the start, without the consulting work informing the fractional executive specification, produces overlap and confusion. The fractional executive is hired on the basis of an abstract sense of need; the consultant produces recommendations that the fractional executive then disputes or duplicates, and the engagement cost compounds without proportional improvement in outcomes.
The fourth is to use fractional executive engagement as a cheaper alternative to a full-time hire when the business actually needs full-time leadership. Fractional executive engagement is not a discount structure. It is appropriate when the business cannot yet absorb full-time senior cost, and inappropriate when the function genuinely requires full-time leadership. Owner-managers who try to run a £20m turnover business with a fractional CFO at two days a week typically find that the function is structurally under-resourced and that the cost savings are an illusion.
A Practical Decision Framework
For owner-managers trying to decide between consulting, fractional executive engagement, interim management, or some combination, the practical framework I use is as follows.
If the underlying need is to determine what to do, the engagement is a consulting engagement. The deliverable is a calibrated strategic and analytical output. The engagement is project-based, fixed-fee, and ends when the work is complete.
If the underlying need is to do something on an ongoing basis that the business cannot yet support with a full-time senior cost, the engagement is a fractional executive. The deliverable is the operational execution of a function. The engagement is part-time and ongoing, continuing until the business grows to a full-time hire or the function no longer requires senior leadership.
If the underlying need is to fill a defined gap on a full-time basis for a defined period, the engagement is interim management. The deliverable is full-time leadership of a function during a specified period. The engagement is full-time and time-bound.
If the underlying need is to identify what to do and then execute it on an ongoing basis, the right structure is to consult first, then engage a fractional executive against the specification that the consulting produces.
Conclusion: Sequence, Do Not Substitute
The most expensive owner-manager mistakes I see in this category stem from treating consulting and fractional executive engagement as substitutes that compete on price. They do not. They produce different outputs against different problems, and the choice between them is determined by the underlying need rather than by the comparative cost.
The strongest outcomes come from sequencing the engagements. Consulting first to diagnose the binding constraint and produce a calibrated strategic recommendation. Fractional executive engagement second, against the specification of the consulting work produced, to execute the operational dimensions of the strategy on an ongoing basis. The combined cost is typically £40,000 to £85,000 in year one, and the combined outcome is materially stronger than either engagement alone.
If you are weighing consulting against fractional executive engagement for a specific decision in your business and you want a frank, evidence-based view on which structure (or sequence of structures) fits your situation, you can book a free Business Assessment Call with SGI at https://startgrowimprove.com/business-consultants/. The call is calibrated against your specific business and your specific leadership and strategic needs, and you will leave with a clear view on which engagement structure is the right next step.
Frequently Asked Questions
What is the difference between a business consultant and a fractional executive? A business consultant produces a strategic and analytical output (diagnosis, calibrated recommendation, implementation roadmap) and disengages when the work is delivered. A fractional executive takes an ongoing part-time operational role within the business, typically two to four days per week, and is accountable for running a function rather than for designing it. The consultant designs what needs to happen; the fractional executive does it, week after week.
How much does a fractional CFO, CMO, or COO cost in the UK in 2026? Typical UK fractional executive engagements range from £3,000 to £8,000 per month, depending on seniority, function, and days committed. A senior fractional CFO with PE-backed SME experience typically prices at £6,000 to £8,000 per month for three to four days. Annual costs for fractional executive engagement typically range from £40,000 to £100,000.
Should I engage a consultant or a fractional executive? Engage a consultant when the underlying need is strategic and analytical (e.g., identifying the binding constraint, producing a calibrated recommendation, or designing a transformation). Engage a fractional executive when the underlying need is ongoing operational leadership of a function that the business cannot yet support with a full-time senior cost. In practice, the strongest pattern is to engage consulting first to produce the strategic specification, then engage a fractional executive against that specification.
What is the difference between a fractional executive and an interim manager? A fractional executive takes a part-time role on an ongoing basis, typically two to four days per week, as the long-term operational solution for a function the business cannot yet support full-time. An interim manager takes a full-time role for a defined period, typically three to twelve months, to fill a defined gap. The choice depends on whether the underlying need is ongoing part-time leadership or temporary full-time leadership.
Can a consultant act as a fractional executive? Some can, but the skill sets are different. Consultants are typically strong at strategic and analytical work and less experienced at running a function week after week. Fractional executives are typically experienced operational leaders, often with prior CFO or CMO experience, and less calibrated for strategic diagnosis. The most useful pattern is to engage each for what they are structurally good at rather than stretching either across the boundary.
What if I need both? Sequence them. Engage a consultant first to diagnose the binding constraint and produce a strategic recommendation. The consulting work specifies the fractional executive role required, including the number of days per week, scope, seniority, and expected outcomes. Engage the fractional executive against that specification. The combined cost is typically £40,000 to £85,000 in year one, and the combined value is materially higher than the value of either engagement alone.
References
- Management Consultancies Association, UK Consulting Industry Report (most recent annual edition), https://www.mca.org.uk/
- Federation of Small Businesses, Small Business Index (quarterly), https://www.fsb.org.uk/
- Institute of Interim Management, Interim Management Survey (annual), https://www.iim.org.uk/
- British Business Bank, Small Business Finance Markets Report, https://www.british-business-bank.co.uk/
- SGI Consultants, Business Consulting Service Page, https://startgrowimprove.com/business-consultants/
Kurt Graver is the founder and CEO of SGI Consultants, a business consultancy that has helped over 2,000 entrepreneurs establish successful startups using systematic business development methodologies. An accountant with an MBA and 25 years of commerce and consultancy experience, Kurt specialises in strategic planning, market analysis, and sustainable business growth