What PE expects from a portfolio CFO
UK private equity houses (whether growth equity, lower-middle-market or larger) impose a portfolio CFO standard that's recognisably different from a typical VC-backed startup:
- Monthly close by working day 5-7 — non-negotiable. No "we'll have the numbers by mid-month".
- Standard monthly LP / sponsor pack — P&L, balance sheet, cash, KPIs, covenant headroom, weekly cash, prior-month variance commentary. Format is usually dictated by the sponsor.
- Weekly cash + KPI dashboard — many PE houses get a weekly KPI feed, especially in roll-up or operationally-intense businesses.
- Annual budget process tightly disciplined — bottom-up build, top-down sense-check, sponsor sign-off, monthly variance reporting against it.
- Covenant compliance — virtually all PE-backed UK businesses have debt; covenant tests (usually quarterly) must be tracked and forecast.
- 100-day plan in the first 100 days post-investment, tracked monthly thereafter.
- Exit-readiness from year 2 onwards — clean management accounts, normalised EBITDA, vendor due diligence-ready data room.
None of this is exotic — but the cadence is tighter and the format is more standardised than at most VC-backed companies. The fractional CFO who's done PE-portfolio work knows the rhythm without learning it on the job.
When fractional works for PE-backed
The PE-backed engagements where fractional CFO genuinely works:
- Bolt-on / roll-up sub-target. Sub-£15M revenue acquisition being absorbed into a larger group. Often needs interim CFO support for integration (3-6 months) then transitions to operating-group CFO oversight; fractional fills the gap in between.
- Early-stage growth equity (sub-£10M revenue). Sponsor's investment thesis assumes growth to £30-50M before exit; full-time CFO is appropriate at the exit point but premature now. Fractional bridges 12-24 months.
- Sub-target portfolio companies of a buy-and-build sponsor. Many UK lower-middle-market sponsors run portfolios where individual companies don't need full-time CFOs; group-level oversight + fractional at each sub is more cost-effective.
- Transition out of family ownership. Recently acquired family business, founder still involved, no prior PE governance discipline. Fractional embeds the cadence before the eventual full-time hire.
When PE won't tolerate fractional
- Above £25M ARR with active growth. Sponsor will want full-time, full stop.
- Active sell-side process within 12 months. Exit prep alone is full-time for 6-9 months; full-time CFO with prior exit experience is the standard.
- Heavily levered with tight covenants. Monthly covenant tracking with low headroom needs daily attention.
- Multi-entity international group with consolidation complexity. Cross-border close discipline at 5+ entities is full-time work.
- Regulated environment. Many sponsors require named full-time senior managers in FCA, banking, or insurance-regulated businesses.
PE monthly board cadence — what the pack contains
The typical UK PE-backed monthly pack (working day 8-12 of the month):
| Section | Content | Pages |
|---|---|---|
| Cover + summary | Headline KPIs, traffic-light status, key issues | 1 |
| P&L | Current month + YTD vs budget + prior year, variance commentary | 2-3 |
| Balance sheet + cash | Position vs budget, working capital movements, debt position | 2 |
| Cash forecast | 13-week detailed + 12-month rolling | 1-2 |
| KPIs | Operating metrics, cohort/funnel where relevant | 2-3 |
| Covenant headroom | Quarterly tests, projected, sensitivity | 1 |
| Initiatives status | 100-day plan or current quarter initiatives | 1-2 |
| Risks & opportunities | What's changing, what to escalate | 1 |
Total pack: typically 12-18 pages. Sent to sponsor 24-48h before monthly board call. Format usually fixed by the sponsor; some PE houses (Hg, ICG, BGF) have stricter standardisation than others.
KPIs UK PE houses actually look at
Beyond P&L and cash, the operating KPIs PE houses focus on, by sector:
SaaS / tech
- ARR / NRR / GRR (annual recurring revenue, net + gross retention)
- Magic number (new ARR / S&M spend)
- Rule of 40 (growth % + EBITDA margin %)
- Gross margin trend, especially for hosting and customer success cost
- Customer concentration (top 10 customers as % of ARR)
Services / consulting / agencies
- Utilisation (billable hours / available)
- Effective hourly rate
- Project gross margin
- Pipeline coverage (weighted pipeline / quarterly target)
- DSO (days sales outstanding)
D2C / consumer
- Contribution margin per order
- CAC (new-customer, not blended) and payback months
- Cohort retention curves
- Inventory turn / DIO
- Channel mix and contribution margin per channel
Healthcare / regulated services
- Utilisation, occupancy (for clinics, care)
- Regulatory compliance status
- Average revenue per patient/client
- Staff retention and locum cost ratios
Covenant management — the part the founder usually misses
Most UK PE-backed scale-ups have at least one piece of acquisition debt or growth debt with quarterly covenant tests. Typical covenants:
- Leverage covenant — net debt / EBITDA below a stepping-down ratio (e.g. 5.5x in Y1 stepping to 4.0x by Y3)
- Interest cover covenant — EBITDA / interest expense above a threshold (e.g. 3.0x)
- Cash flow covenant — sometimes a debt service cover ratio or minimum liquidity covenant
The CFO's job is to forecast covenant headroom on a rolling basis, escalate anything within 10-15% of breach, and pre-engage with the lender before a breach is unavoidable. A breach without prior warning destroys the lender relationship; a breach forecasted 2-3 months ahead and managed proactively is usually negotiated calmly.
An experienced PE-portfolio fractional CFO has done this multiple times. A fractional CFO who's only worked with VC-backed equity-only businesses usually hasn't.
Exit prep — the test of whether fractional is enough
The honest answer: fractional usually isn't enough for the 6-12 months of active exit execution, but is genuinely valuable in the 18-36 months of exit preparation.
Exit prep work that fractional handles well:
- Clean-up of management accounts to be sell-side ready
- Building the normalised EBITDA bridge (owner-manager addbacks, one-off costs, non-recurring revenue)
- KPI data room — historical metrics by month, by cohort, by segment
- Vendor due diligence engagement and management
- Year-end audit if not already in place
- Working with corporate finance advisers on the info memorandum
Exit execution work that usually requires full-time:
- The 8-16 weeks of intense Q&A from bidders / private equity buyers
- Management presentations and bidder meetings
- Live financial diligence response
- SPA negotiations
- Completion accounts
The right shape: fractional through Year 1-2 of the hold building exit-readiness, transitioning to interim or full-time 6-9 months before active marketing.
What PE-backed scale-ups should pay
For PE-backed UK businesses, fractional CFO retainers typically run higher than equivalent-revenue VC-backed peers because of the cadence intensity:
- £3-10M revenue, growth-equity backed: £5,000-£8,000/mo, 5-7 days/mo, senior-tier operator
- £10-25M revenue, PE-backed mid-market: £8,000-£14,000/mo, 7-10 days/mo, PE-experienced senior
- Bolt-on / roll-up sub-target: £3,500-£7,000/mo, 4-6 days/mo, group integration support
Sponsor sometimes pays directly (as a portfolio-level cost); more often the portfolio company pays and the sponsor pre-approves the engagement. Either way the standard is higher than non-PE fractional engagements.