The Fractional CFO’s Role in PE Exits & Due Diligence

The Fractional CFO’s Role in PE Exits & Due Diligence

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

The 12 months before a PE exit compress the work of a hold period into a final sprint. Vendor due diligence providers arrive to scrutinise the financial baseline; buyer-side teams assess revenue quality, customer concentration, and working capital; lawyers build the SPA and disclosure letter; tax advisers model structures; bankers run the process. Through all of this, the CFO is the single accountable point for the financial story the business tells — the numbers, the narrative, and the evidence that underpins both. A competent exit CFO lifts the outcome by several multiples of their fee. An incompetent one caps the process at a lower valuation and, sometimes, derails it entirely.

This guide covers the specific role of a fractional CFO in PE exit preparation and due diligence — what gets prepared, when it gets prepared, how quality of earnings (QoE) work is managed, how data rooms are structured, what buyers are actually looking for, and how fractional CFOs with exit experience accelerate the process. It applies to trade sale exits, secondary PE buyouts, and IPO routes. It is a companion to our fractional CFO value creation guide and our broader PE-backed fractional CFO playbook.

If you are a PE sponsor or portfolio company preparing for exit in the next 18–24 months, call 020 3287 9501 or skip to How FD Capital supports exit preparation below.

Why exit preparation starts 18–24 months before the process

Exit preparation is not a six-month project at the end of the hold period. The decisions and disciplines that determine exit outcomes get set 18–24 months earlier — sometimes longer. By the time a sponsor formally kicks off an exit process, the finance function needs to already be operating at exit-ready standard. Businesses that start the uplift work only after the process mandate has been signed discover, too late, that key elements cannot be retroactively fixed.

Three things specifically drive the 18–24 month timeline:

• Historical financial track record. Buyers will assess three full years of audited statutory accounts plus the current trading year. A business that has run weak reporting for two of those years cannot retroactively create the track record. The uplift must be in place for at least the final 12–18 months of the look-back period.
• Normalised EBITDA credibility. Normalisation adjustments are accepted by buyers only if they are documented with contemporary evidence. Adjustments manufactured in the final six months look like what they are — attempts to improve the headline number — and get challenged aggressively.
• KPI consistency. The operational metrics the business reports need to be defined consistently across historical periods. Changing definitions pre-exit to produce flattering trends is the single quickest way to lose buyer trust.

The sponsor’s perspective on exit timing

PE sponsors typically begin formal exit preparation 12–18 months before the anticipated launch of a sale process, with the finance function work starting earlier still. The process itself — from adviser mandate to completion — typically runs 6–9 months for trade or secondary sales and 9–15 months for IPO routes. Reference guidance on current PE exit practice and market conditions is published by the British Private Equity & Venture Capital Association (BVCA).

The fractional CFO’s role in exit preparation

Sponsors engage fractional CFOs for exit work in several scenarios. The incumbent CFO may have the operational skills but not the specific exit experience. The permanent CFO may be leaving before the exit and a continuity bridge is needed. Or the existing finance function may simply need transaction-specialist capacity alongside the BAU finance leadership for the duration of the process. In each case, the fractional CFO brings specific exit-readiness capabilities.

Pre-process readiness uplift (T-24 to T-12 months)

During this phase the fractional CFO focuses on preparing the business to be exit-ready. Specific work includes:

• Reviewing and tightening the monthly close to 10 working days or better.
• Cleaning historical KPI reporting for definitional consistency.
• Building the normalised EBITDA calculation with supporting documentation.
• Identifying one-off items, reorganisation costs, and other adjustments that will appear in QoE.
• Preparing the management information pack that will become the basis of the exit CIM (confidential information memorandum).
• Upgrading the financial forecasting model to investor-grade standard.
• Starting the data room assembly.
• Identifying and fixing diligence traps before buyers find them.

Process readiness (T-12 to T-6 months)

As the process launch approaches, the fractional CFO runs vendor due diligence engagement, finalises the data room, briefs the banker team, prepares management presentation materials, and rehearses management meetings. This is the phase where quality of earnings (QoE) work typically begins, and the CFO is the central coordinator of it.

Live process (T-6 months to completion)

During the live process, the CFO supports buyer-side diligence, manages the weekly or daily Q&A flow, handles expert sessions, and works alongside bankers and lawyers through to signing and completion. Time commitment frequently rises to full-time or near-full-time through this phase. Completion is followed by disclosure negotiation, working capital settlement, and any earn-out or escrow mechanics the SPA includes.

Quality of earnings (QoE): the work that drives the deal price

Quality of earnings work is the heart of financial due diligence. Buyers rarely accept management-reported EBITDA at face value; they commission independent QoE analysis to test the underlying earning power of the business. For sellers, producing a credible QoE ahead of the process — usually through vendor due diligence — shapes buyer expectations and protects the seller from unfavourable buyer-side findings.

What QoE analysis actually tests

A QoE report typically examines:

• Revenue quality and sustainability. Is revenue recurring, predictable, contracted? Or is it lumpy, project-based, dependent on key customer relationships?
• Customer concentration. Top-10 customer revenue share, length of relationships, contracted versus non-contracted, churn history.
• Margin trajectory and composition. How gross margins have moved, what drove the movement, whether the trend is structural or cyclical.
• One-off items. Items that distort the reported EBITDA either up (one-off gains, one-time revenue) or down (reorganisation costs, legal settlements, one-off bonuses). Properly normalising out these items produces the “normalised EBITDA” that buyers will typically use as the valuation base.
• Accounting policies. Whether revenue recognition, capitalisation, provisioning, and similar policies are consistent across periods and in line with UK or international standards.
• Working capital normalisation. The level of working capital the business actually needs to operate at, which drives the working capital peg in the SPA.
• Capex sustainability. Whether reported capex is sufficient to maintain the business, or whether the business has been under-investing to flatter EBITDA.
• Earnings quality per customer / product. Segmented profitability analysis showing where the earnings actually come from.

Vendor due diligence: controlling the narrative

Sellers running a formal exit process typically commission vendor due diligence (VDD) from a reputable accounting firm before launching the process. The VDD report is shared with bidders and becomes the reference document for financial DD. A well-prepared VDD shapes the narrative, anticipates and addresses potential concerns, and materially reduces the intrusiveness of buyer-side DD.

The fractional CFO’s role in VDD is central: working with the VDD provider to ensure findings are correctly presented, providing underlying data and explanations, preparing responses to complex questions, and ensuring that the VDD report tells the story that reflects the business’s actual performance rather than a narrative driven by whichever findings the VDD team surfaces. Good VDD providers work collaboratively; weak VDD can materially damage the process, which is why the fractional CFO’s engagement with the VDD team matters.

Building a credible normalised EBITDA

Normalised EBITDA is the single most important number in most exit processes. It is the headline the business uses for its valuation pitch and the number buyers apply their multiple to. Getting normalisation right — both what to adjust and how to present it — is the most directly value-generating work a fractional CFO does in exit preparation.

Legitimate normalisation adjustments

Normalisation adjustments that buyers typically accept include:

• Non-recurring professional fees — one-off legal, consulting, or advisory costs that are not expected to repeat post-transaction.
• Reorganisation and restructuring costs — redundancy costs, office closure costs, systems migration costs.
• Owner-related costs — excess remuneration, personal expenses run through the business, family member salaries at above-market rates.
• Litigation and settlement costs — one-off legal settlements not expected to recur.
• Start-up or exit costs in new markets — investment in new geographies or product lines that has not yet begun returning EBITDA.
• Run-rate adjustments for in-period changes — for example, annualising the full-year effect of a cost-saving initiative implemented mid-year.
• Management addbacks — documented, evidence-based adjustments for activities that will not continue post-transaction.

Adjustments buyers typically challenge

• Forward-looking synergies (these belong in the buyer’s model, not the seller’s EBITDA).
• Adjustments unsupported by contemporary documentation.
• Adjustments that recur year after year, suggesting they are actually part of normal operations.
• Hypothetical improvements (“if we had renegotiated this supplier contract, EBITDA would have been X higher”).
• Customer-specific adjustments that assume the customer will behave differently under new ownership.

How to present normalisation credibly

The gap between credible normalisation and aggressive normalisation is usually the documentation. A schedule showing adjustments supported by supplier invoices, board minutes, redundancy documentation, and similar contemporary evidence gets accepted with minimal challenge. A schedule built from assertions, Excel formulas, and limited supporting evidence gets contested line by line. The fractional CFO’s discipline is to start documenting potential adjustments 18 months before the process, so by the time VDD arrives, the evidence base is already in place.

The data room: what goes in and how it is structured

The data room is the central repository buyers use during diligence. A well-organised data room accelerates the process and signals that the business is professionally run; a disorganised data room slows diligence and raises buyer concerns about the reliability of underlying management information.

Standard data room structure

Modern data rooms are typically structured around functional areas, each with clear folder hierarchies:

• Financial information — audited statutory accounts, monthly management accounts, integrated financial model, KPI reports, banking information, covenant compliance documentation.
• Corporate information — certificate of incorporation, articles, shareholder register, share option records, board minutes, shareholder resolutions.
• Commercial information — top customer contracts, key supplier contracts, pricing policies, major commitments.
• Employees and HR — senior employee contracts, employee census, benefits and pension documentation, any employment litigation.
• IP and technology — patents, trademarks, software licensing, open-source usage, cyber policies.
• Legal and compliance — regulatory licences, litigation, compliance certifications, insurance policies.
• Property — leases, freehold documents, fixtures.
• Tax — corporation tax returns, VAT returns, PAYE records, HMRC correspondence, transfer pricing documentation if relevant.
• Management presentations and analyst materials — CIM, management presentation deck, IBR materials if applicable.

Data room execution principles

• Populate early. Data rooms that go live on day 1 of diligence with most folders still empty suggest the business is not well-organised. Mature sellers populate the data room 2–3 months before the process launch.
• Log every access. Virtual data rooms record who accessed which document and when, which is useful both for process management and, occasionally, for disputes.
• Version control. Where documents are updated during diligence, version control is essential. Multiple versions of the same document circulating creates confusion and suggests poor discipline.
• Responsiveness. Standard diligence generates hundreds of Q&A queries. A seller responding within 24–48 hours throughout maintains process momentum; slow response compounds into delay.

SaaS-specific exit preparation

SaaS businesses have particular exit considerations driven by the revenue model. PE buyers of SaaS businesses focus on specific metrics and will press hard on each. Key SaaS exit focus areas include:

• MRR and ARR definition. Must exclude non-recurring items (implementation fees, professional services, one-off license revenue). Buyers will test whether recurring revenue has been padded.
• Net revenue retention (NRR). Best-in-class SaaS businesses demonstrate NRR above 110%; under 100% indicates the business is leaking value from existing customers faster than expansion can offset.
• Cohort-based retention analysis. Showing retention curves by customer cohort, not just blended averages.
• CAC payback and LTV:CAC by segment. Buyers want evidence that unit economics work and have been improving.
• Deferred revenue treatment. Proper balance sheet recognition under FRS 102 or IFRS 15.
• Customer concentration. Particularly important in vertical SaaS where top-10 customer revenue share can be high.

Detailed SaaS-specific exit preparation guidance is covered in our fractional CFO for SaaS guide. The principles hold for any subscription-based business exit.

IPO readiness: when the exit route is public markets

IPO exits have additional requirements beyond trade sale or secondary PE exits. The public markets impose ongoing disclosure, governance, and reporting obligations that the business must be ready to meet from admission day, and due diligence by sponsors, reporting accountants, and listing authorities is more intensive than in a private transaction.

What IPO readiness specifically requires

• Three years of audited statutory accounts typically under IFRS, with auditors signed off as willing to act as reporting accountant.
• A close process that can deliver results within 15–20 working days with the speed and reliability public markets require.
• UK Corporate Governance Code compliance. For Main Market premium listings, this includes specific board composition, committee structure, remuneration, and evaluation requirements. The FRC’s Code guidance is the reference.
• FCA Listing Rules compliance. The Financial Conduct Authority sets the listing rules that apply to UK public companies, with specific categories for different listing venues.
• Working capital statement. The directors must state they have sufficient working capital for the next 12 months, supported by a detailed working capital model that the reporting accountant reviews.
• Internal controls environment at a standard that will support quarterly reporting and the increased scrutiny that comes with public status.
• Historical financial information in IPO format including any required restatements or reclassifications.
• Forward-looking statements and disclosure controls governing what management can say publicly and the supporting evidence required.

The role of a fractional CFO in IPO preparation

Many businesses pursuing IPO bring in a fractional CFO with specific listing experience 12–18 months ahead of the anticipated admission, typically alongside (or transitioning to) a permanent appointment. The fractional CFO leads the IPO readiness project while the incumbent handles BAU finance leadership. Building investor-grade reporting — reliable, consistent, capable of supporting the public reporting cadence — is typically the single largest workstream, and it is the one that most directly affects listing success. Businesses that arrive at admission with reporting capabilities stretched to their limit often struggle in the post-IPO period when the demands only increase.

How fractional CFOs prepare businesses for buyer-side DD

Buyer-side due diligence is intensive, time-pressured, and adversarial by nature — buyers are looking for reasons to reduce price or walk away. A fractional CFO who has been through multiple exits knows where buyers look, what they find, and how to address issues before they become price-chip items.

The common findings that reduce exit value

• Customer concentration not properly managed. Top customers that can walk without much difficulty, contracts without multi-year commitments, notice periods too short.
• Inconsistent accounting policies. Revenue recognition applied differently across periods, capitalisation policies varying, provisioning discretionary.
• Under-invested working capital. The business has been running lean for exit, and buyers peg working capital at levels the business cannot realistically operate at post-transaction.
• Capex that has been suppressed. The business has been deferring capex to flatter EBITDA; buyers adjust down for sustainable capex.
• Systems and controls gaps. Key-person dependencies, no documented processes, segregation of duties failures.
• Historical tax issues. Open HMRC enquiries, uncertain tax positions, unresolved transfer pricing exposure.
• Commercial exposure. Undisclosed commercial issues, litigation risk, warranty exposure on historical contracts.

A fractional CFO preparing a business for exit 18–24 months ahead works through each of these categories systematically. Every item resolved proactively is an item that does not get used against the seller in price negotiation.

The exit CFO: specific skills and experience

Fractional CFOs with direct exit experience bring capabilities that generalist CFOs do not have. The exit CFO is operating in high-stakes conditions with experienced counterparties (bankers, lawyers, VDD teams, buyer DD teams) and needs to match their level across multiple workstreams simultaneously.

What a good exit CFO brings

• Pattern recognition from prior exits. Knowing what will come up in DD before it comes up. Understanding what buyer behaviour signals a price-chip tactic versus a genuine concern. Recognising when the process is drifting and needs to be brought back on track.
• Adviser management. Running the VDD team, working with bankers, managing lawyers, coordinating the broader adviser set. This is project management at CFO level.
• Narrative discipline. Ensuring the financial story told to buyers is internally consistent, documented, and defensible. The story the CEO tells and the story the numbers tell have to be the same story.
• Commercial alongside technical. Able to speak to buyer DD teams with authority on both the numbers and the business. Buyers quickly lose confidence in a CFO who can explain the accounting but not the commercial dynamics, or vice versa.
• Stamina. Exit processes are intense and long. A CFO who is exhausted by month four of a six-month process costs the seller meaningfully.

How FD Capital supports exit preparation

FD Capital has placed fractional and interim CFOs into UK businesses at every stage of the exit lifecycle — pre-process readiness, live process execution, and post-completion transition. Our approach:

An exit-experienced CFO network

Our network includes finance leaders who have personally led multiple UK exit processes — trade sales, secondary PE transactions, and IPOs on AIM and Main Market. Every candidate we present for exit work has direct, recent exit experience. Generalist CFOs do not handle exit work in our practice.

Speed matched to exit timelines

For immediate exit-critical situations, we can deliver shortlists in 48 hours. For planned pre-exit capability uplift (starting 18–24 months ahead), our standard 3–7 working day shortlist timing applies.

Adrian personally leads senior candidate assessment

Every senior exit-CFO 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, including significant involvement in exit and transaction work.

Companion guides cover value creation strategy, fractional CFO engagement mechanics in PE, and the full PE-backed CFO operating playbook. For a SaaS-specific exit angle, see our SaaS fractional CFO guide.

Frequently asked questions

When should we engage a fractional CFO for exit preparation?

For planned exits, 18–24 months before the anticipated process launch is ideal. This gives time for the historical reporting uplift, data room assembly, and normalisation documentation that buyers will scrutinise. Shorter timeframes are possible but compress risk.

What’s the difference between vendor DD and buyer DD?

Vendor due diligence (VDD) is commissioned by the seller before the process to identify and address issues proactively. Buyer due diligence is conducted by the buyer after receiving information, typically using their own or specialist third-party advisers. Sellers benefit from running comprehensive VDD because it shapes buyer findings and reduces the intrusiveness of subsequent buyer DD.

Is a full-time CFO always needed for an exit?

Not necessarily. Many UK exits are successfully led by fractional CFOs at 3–5 days per week, particularly for lower-mid-market deals. For larger transactions (£100m+ enterprise value) or complex multi-jurisdictional exits, full-time CFO capacity is usually required, but the fractional model still works for smaller add-on or roll-up transactions.

How much does an exit-specialist fractional CFO cost?

Day rates for exit-specialist fractional CFOs typically run £1,000–£1,500 in the UK. For a pre-process engagement at 2 days per week, monthly cost is typically £10,000–£13,000. For live process at 4–5 days per week, monthly cost is typically £20,000–£30,000. Against the valuation uplift a good exit CFO typically generates, the ROI is substantial.

Can a fractional CFO handle both pre-process and live-process work?

Yes, and it is often the preferred model. A CFO who has been with the business through the 18–24 months of preparation understands the story, the numbers, and the business dynamics more deeply than anyone a sponsor could parachute in for the live process. Continuity matters for exit outcomes.

Who owns the data room — the CFO or the bankers?

The CFO owns the data room content; bankers typically manage the buyer-access process. The CFO (or their team) populates, maintains, and responds to Q&A; the bankers control which bidders have access and manage communication cadence. Clear division of responsibility avoids duplication and gaps.

Does the fractional CFO attend management presentations?

Yes — the CFO is typically the financial presenter in management presentations and the primary respondent on finance-related buyer questions. This is one of the reasons exit CFO selection matters so much; the CFO is in the room at the most decisive moments of the process.