Fractional FD for PE-Backed Businesses

Fractional FD for PE-Backed Businesses

By Adrian Lawrence FCA — Founder, FD Capital | Fellow of the ICAEW

A fractional FD is often the right appointment when a PE-backed business needs experienced finance leadership but a full-time CFO is not yet justified or available. In the lower-mid-market — businesses running at £2m–£15m EBITDA where the sponsor has just completed and needs the finance function levelled up to PE reporting standards — a fractional FD at 2–3 days per week routinely delivers what a sponsor needs for the first 12–24 months of the hold period. In some cases, it is the right model for the whole hold.

This guide sets out how fractional Finance Directors work with PE sponsors in UK portfolio companies — the remit, the engagement timing, the way we collaborate with sponsor deal teams, and how FD Capital briefs, selects and deploys fractional FDs into PE contexts.

If you are a sponsor or portfolio CEO looking for a fractional FD — call 020 3287 9501 or skip to Engagement models below.

Fractional FD vs fractional CFO in a PE context

The distinction matters in a PE setting because the two roles carry different price points and different expectations. In UK market terminology:

• Fractional FD — operationally strong senior finance leader; owns month-end, reporting, controls, cash, commercial finance, sponsor reporting. Typically £600–£1,000 per day.
• Fractional CFO — broader strategic remit, board-level presence, investor-facing transaction credentials, M&A leadership. Typically £800–£1,500 per day for PE-backed work.

The labels blur in practice. A £10m EBITDA portfolio company often engages someone titled “CFO” who is operationally doing FD-level work, or someone titled “FD” who is covering CFO-level board and transaction responsibilities. The right question is not which title fits but which specific individual has the relevant experience for what the business actually needs. For most lower-mid-market PE-backed businesses, a strong fractional FD delivers the finance leadership the sponsor requires without the cost premium of a transaction CFO.

At the top of the mid-market, or for businesses explicitly preparing for exit within 18–24 months, a fractional CFO with transaction credentials is usually the right choice. Sister article: Fractional CFO for PE Value Creation.

The fractional FD’s PE remit

A fractional FD deployed into a PE-backed business typically takes ownership of the following:

Month-end close and management reporting

PE sponsors expect accurate management accounts within 10–15 working days of period end, on a consistent basis, with supporting commentary. Many businesses arrive under PE ownership reporting monthly on a 20–30 day lag. Compressing the close to PE standard is usually the fractional FD’s first operational priority — it requires not just more work but better systems, clearer processes, and more disciplined data flow.

Sponsor reporting and KPI tracking

Each PE sponsor has a preferred reporting template, a set of KPIs that feed into the fund’s value-creation operating platform, and a reporting cadence (usually monthly financial, weekly flash, quarterly board). A fractional FD adapts to the sponsor’s template from day one rather than imposing their own, which makes the fund’s portfolio monitoring work cleanly at the fund level.

Cash control and covenant management

PE-backed businesses typically carry covenanted debt. The fractional FD owns the covenant model, produces covenant reporting, and manages the lender relationship on covenant matters. Alongside this, a 13-week rolling cash forecast becomes the central cash management tool, run weekly and reviewed with the sponsor.

Financial controls

Owner-managed businesses often arrive under PE ownership with informal controls, missing segregation of duties, and documentation gaps. A fractional FD builds out the controls environment to the standard PE sponsors, future acquirers and auditors expect — authorisation matrices, bank mandate controls, procurement policy, payroll oversight. This work is rarely glamorous but materially reduces risk and significantly strengthens the exit story.

Commercial finance partnership

Beyond reporting, a fractional FD partners with the CEO and commercial leadership on pricing discipline, margin analysis, customer profitability, and operational decisions. This is where the finance function shifts from producing numbers to informing decisions — and where a good fractional FD earns their rate many times over.

Your first month with a fractional FD: what to expect

For portfolio CEOs, the first 30 days with a new fractional FD should look specific. Well-briefed, experienced FDs follow a consistent pattern:

• Week 1: Meetings with CEO, senior leadership, incumbent finance team, key external stakeholders (auditor, bank, tax adviser). Initial assessment of financial system, data quality, and reporting. Kick-off call with the PE sponsor.
• Week 2: Deep dive into management accounts, cash position, commercial pipeline, key contracts, outstanding issues. First 13-week cash forecast produced.
• Week 3: Draft revised monthly reporting pack to sponsor standard. Identify top three operational priorities for the next 90 days. Propose finance team structure adjustments if needed.
• Week 4: First month-end close under the new regime (typically smoother than the pre-arrival close, often dramatically faster by month three). Board-ready pack produced. Forward plan agreed with CEO and sponsor.

Inside 30 days, CEOs should have visible improvement in the quality and timeliness of finance information, clear visibility on cash, and confidence that the sponsor’s reporting will be met on time. If that is not happening by day 30, it is a signal the engagement is not working and should be reviewed.

Building a PE-ready audit trail

One of the highest-leverage things a fractional FD does in a PE-backed business is lift the audit trail to the standard that a future exit process will demand. Exit diligence — typically 12–24 months away but starting to matter from day one — will examine revenue recognition, EBITDA normalisation, contract documentation, entity structuring, tax treatment, and operational metrics. Getting these right during the hold period, consistently, is vastly cheaper than remediating them under time pressure during an exit process.

The elements of a PE-ready audit trail include:

• Contract register with all material customer and supplier contracts accessible digitally, with key commercial terms extracted.
• Revenue recognition documentation aligned with FRC-issued FRS 102 or IFRS 15 requirements, with supporting schedules auditors will sign off on.
• Consistent EBITDA normalisation adjustments documented month by month, not reconstructed retrospectively.
• Cap table, share option records, and employment agreements maintained in a structured data room.
• Board minutes and governance records kept to a corporate-standard cadence even in a private-company setting.
• Intellectual property register and supporting documentation.
• Tax computations, R&D claim files, and HMRC correspondence organised by period.

A fractional FD with PE exit experience knows exactly what will be looked at and can structure the documentation to survive diligence without creating a separate pre-exit project.

Managing portfolio risk through fractional FD oversight

From the sponsor’s perspective, a fractional FD is also a risk mitigation asset. The fund’s exposure to an underperforming portfolio company compounds quickly if no experienced finance leader is in the business flagging issues early. A well-chosen fractional FD:

• Identifies commercial and operational issues through the monthly reporting cycle before they become covenant breaches.
• Maintains a consistent view of cash, debt, and working capital that the sponsor can rely on.
• Flags deviations from the value creation plan promptly, with quantified impact and proposed mitigations.
• Ensures compliance with banking covenants, tax obligations, and statutory deadlines — none of which should be sponsor problems but which often become sponsor problems when finance leadership is weak.

For sponsors with multiple portfolio investments, this risk oversight delivered consistently across the portfolio is one of the reasons fractional FD networks like FD Capital’s have become part of the operational infrastructure the sponsor community relies on.

M&A execution as a fractional FD

PE strategies frequently include bolt-on acquisitions or buy-and-build. A fractional FD with M&A experience plays a significant role in these transactions:

• Target evaluation — building the acquisition model, running financial due diligence, identifying quality-of-earnings issues, quantifying synergies.
• Deal structuring — working alongside sponsor deal team and advisers on completion accounts, working capital mechanisms, warranty structuring.
• Integration — consolidating finance systems, aligning chart of accounts, harmonising reporting, capturing synergy run-rate.
• Post-merger control — stabilising the combined group’s reporting, addressing any control or process issues identified during diligence, embedding the acquired entity into the portfolio company’s reporting rhythm.

For smaller bolt-ons, the existing fractional FD can typically absorb the transaction work alongside BAU. For larger transactions or buy-and-build rollups, we often place an interim transaction FD alongside the ongoing fractional FD so both workstreams get proper attention.

Engineering bridge rounds in hypergrowth

Hypergrowth PE-backed businesses occasionally hit the point where the VCP execution is working but cash is outrunning plan — customer acquisition is accelerating, working capital is absorbing more than modelled, growth investment is outpacing cash generation. The sponsor faces a choice: scale back growth, or engineer a bridge funding round.

A fractional FD leads the financial work on bridge rounds — updating the model, preparing investor materials for existing and new funders, negotiating with the incumbent lender on facility extension, managing the diligence. These rounds move quickly and the finance function needs to respond at pace. A fractional FD who has run bridge rounds before knows what investors will ask, anticipates the issues, and keeps the process moving.

Virtual, in-person, and hybrid engagement models

Fractional FD engagements today are almost always hybrid. Fully remote engagements work for specific project-based scopes (reporting redesign, audit preparation, M&A support), but ongoing PE-backed fractional FD roles benefit materially from in-person presence — senior leadership relationships, commercial team partnership, board presence, sponsor face-to-face cadence. The typical pattern we see working well:

• 1 day per week on-site for leadership meetings, finance team oversight, key stakeholder presence.
• 1–2 days per week remote for deep work (modelling, close, reporting).
• In-person attendance for board meetings, sponsor meetings, transaction milestones.

What we rarely recommend is 100% virtual for PE-backed ongoing fractional work. The commercial relationships that make the role effective are built in-person. Virtual-only reduces the fractional FD to a reporting function, which is not what sponsors are paying for.

Integrating a new PE sponsor into the business

When a secondary transaction brings in a new PE sponsor partway through a business’s journey, the transition period is commercially sensitive. The incumbent finance function has been reporting one way; the new sponsor expects different metrics, different cadence, different KPIs. A fractional FD — either already in the business, or newly engaged as part of the transition — manages the handover.

The work includes: mapping the new sponsor’s reporting template against existing reporting and closing the gaps; aligning KPIs to the new value creation plan; briefing senior leadership on new sponsor expectations; establishing the cadence of board meetings and sponsor interactions under the new ownership; and managing the financial handover itself, including any closing accounts or completion mechanism. Done well, the new sponsor receives a business already calibrated to their expectations by the time they have completed. Done badly, the first six months are a friction-heavy period that erodes the sponsor’s confidence in the management team.

Avoiding PE financial pitfalls

The PE finance failures we see most commonly in businesses arriving under new ownership:

• Covenant headroom modelling errors — overoptimistic revenue assumptions combined with under-modelled cost inflation lead to covenant pressure 12–18 months in.
• Revenue recognition policy inconsistency — different treatment across periods, making period-on-period comparison unreliable.
• Working capital surprises — seasonal working capital absorption that was not modelled, creating unexpected cash tension.
• EBITDA normalisation drift — one-off add-backs that become structural, eroding the credibility of reported EBITDA.
• Weak financial controls being discovered during audit rather than closed proactively — uncomfortable conversations with auditors and sponsors.
• Missed tax elections or claims — R&D tax credits left unclaimed, Patent Box benefits unidentified, group relief opportunities missed.

A fractional FD with PE experience knows where these pitfalls sit and spots them early — ideally in the first 60 days rather than surfacing them at year-end.

The British Private Equity & Venture Capital Association (BVCA) publishes periodic guidance on portfolio company finance and reporting practice that reflects the working expectations of sponsor LPs. FD Capital’s fractional FDs are briefed against these benchmarks.

How to write a job spec for a fractional FD

A good fractional FD job specification is concise and specific. A sponsor or CEO drafting one should cover:

• Business context — revenue, EBITDA, team size, sector, ownership structure, recent transaction if applicable.
• The specific work — what needs to be done in the first 90 days, what ongoing remit looks like thereafter.
• Time commitment — target days per week and expected working pattern.
• Experience required — sector familiarity (PE-backed, SaaS, services, manufacturing), transaction experience, professional qualification.
• Reporting line — who the fractional FD reports to, who they work with day-to-day, how sponsor interactions are managed.
• Timescale — when the CFO needs to start, anticipated duration of engagement.

If you send us this structure, we can turn it into a shortlist within days. If you do not have a spec written, we can draft one from a 20-minute briefing call.

When to bring in a fractional FD during a PE acquisition

The timing options across a deal cycle:

• Pre-completion — rare, but occasionally sponsors bring in a fractional FD during the diligence period to validate the incoming finance team’s capability. Typically this is more natural for the sponsor’s deal team than a fractional FD, but it can work for specific situations.
• At completion — optimal for most deals. The fractional FD starts day one of the hold period, leads the 100-day plan, and establishes sponsor reporting from the first period.
• Within 90 days of completion — second-best timing. Some sponsors prefer to assess the incumbent finance team for 30–60 days before deciding on fractional support. This works but compresses the 100-day plan window.
• Mid-hold (trigger-based) — CFO or FD departure, significant underperformance against plan, new investment, or approaching exit. Sponsors who decide mid-hold that fractional support is needed should aim to have someone in place within 3–4 weeks.

Engagement models and pricing

Ongoing fractional engagement (1–3 days per week)

The standard model for PE-backed businesses. A named FD works with the business on an ongoing basis, typically 2–3 days per week. Engagements run through the hold period for many portfolio companies, with some transitioning to full-time as the business scales.

Project-based engagement

Defined scopes — 100-day plan execution, pre-exit finance uplift, bolt-on integration, bridge round support. Higher intensity (3–5 days per week) for 3–9 months.

Interim coverage

Full-time coverage for 3–12 months. Typical uses: FD departure, carve-out finance leadership, intensive transaction support, or restructuring.

Combining fractional and interim

One of the things we are asked about regularly is whether a single person can cover both fractional and interim work. For the same business, sequentially, yes — many engagements start as an interim sprint and step down to a fractional cadence once the initial priorities are delivered. Across multiple engagements in parallel, it is harder — the time commitment of an interim role typically precludes concurrent fractional commitments elsewhere.

Rates

UK fractional FD day rates for PE-backed engagements run between £600 and £1,000, with specialist transaction and PE-exit credentials commanding the upper end. For a 2-day-per-week engagement, a sponsor should budget £6,000–£8,500 per month. Compared to a permanent FD (typically £110,000–£150,000 base plus bonus and employer NI — £135,000–£185,000 fully loaded), the fractional model delivers proven capability at approximately 45–55% of the fully-loaded permanent cost.

Full pricing transparency is on our fractional CFO pricing page, which covers FD rates alongside.

How FD Capital collaborates with PE sponsors

Our working relationship with sponsor deal teams has developed over seven years of placements into PE-backed businesses. A typical collaboration looks like this:

• Briefing call — 20–30 minutes with the sponsor deal team or portfolio CEO, covering business context, specific work, reporting expectations, timing.
• Shortlist — 3–5 pre-vetted candidates within 3–7 working days, each with direct PE-backed experience and relevant sector familiarity. For urgent requirements, 48-hour shortlists.
• Interviews — typically two rounds, with sponsor participation in at least the second round to ensure the appointment will work for the fund-level reporting relationship.
• Onboarding — once the engagement is agreed, we brief the selected FD on sponsor-specific reporting expectations, template familiarisation, and fund-level context before they start.
• Ongoing support — FD Capital maintains a check-in cadence with the FD and, where helpful, with the sponsor, to identify any issues early and ensure the engagement is delivering.

Our CFOs and FDs are all members of recognised professional bodies — most frequently ICAEW, ACCA, or CIMA — which gives sponsors confidence on the professional standards underpinning the engagement.

Why FD Capital for PE-backed fractional FD recruitment

Three things distinguish our service:

A PE-experienced FD network

Our fractional FD network includes finance leaders who have worked through multiple PE-backed hold periods, exits, and transactions. Generalist FDs struggle in a PE-backed context; ours do not.

Speed that matches deal timelines

For completion-critical engagements we can introduce pre-vetted candidates within 48 hours. Our standard shortlist timing is 3–7 working days.

Adrian personally assesses senior candidates

Every senior finance candidate I recommend has been interviewed by me personally. I am a Fellow of the ICAEW with 25 years of Chartered Accountant experience across private, PE-backed, and listed businesses. That personal assessment is why our placement success rate sits meaningfully above industry norms.

More on our broader service on our main fractional CFO page, or our full CFO services overview.

Frequently asked questions

How quickly can FD Capital deploy a fractional FD into a newly acquired portfolio company?

For completion-timed engagements we can introduce shortlisted candidates within 48 hours, with a FD typically in place within 2–3 weeks of initial brief. For non-urgent engagements, our standard 3–7 working day shortlist timing applies.

Can one person be both interim and fractional FD?

Yes, sequentially. Many engagements begin as an interim sprint (typically 3–5 days per week for the first 90 days) then step down to a fractional cadence (1–2 days per week) once the initial priorities are delivered. This is often the most cost-effective engagement pattern for portfolio companies with significant early-hold work but lower ongoing needs.

Do fractional FDs work with sponsor reporting templates?

Yes. Adopting the sponsor’s reporting template from day one is a core part of the role. We brief candidates on sponsor-specific reporting expectations before they meet you.

Can a fractional FD handle bolt-on M&A?

For smaller bolt-ons, yes. For larger transactions or buy-and-build rollups, we typically recommend layering an interim transaction FD alongside the ongoing fractional FD so both workstreams get proper attention.

Are fractional FD engagements inside or outside IR35?

Properly structured fractional FD engagements typically fall outside IR35. They involve part-time advisory relationships with substitution rights, defined commercial scope, and no day-to-day supervision of the employee kind. HMRC IR35 guidance is the reference point; each situation should be assessed case by case.

What happens if the FD isn’t the right fit?

Fractional engagements carry short notice periods (typically 30 days on either side). If the fit is wrong, we replace the FD quickly from our pre-vetted network. Given the deal timelines sponsors work to, we take fit assessment seriously at the shortlist stage to minimise this risk.

Can the fractional FD convert to permanent at exit?

Often yes. Many fractional FD engagements naturally transition to full-time through the exit process, and we structure engagement terms to enable this where both sides want it. Some FDs prefer to remain fractional and move on to the next portfolio engagement at exit.