Match with vetted UK fractional CFOs — SaaS, agency, D2C, services, PE-backed. Strategic finance leadership without the full-time hire. Board pack, forecast, fundraise prep, hiring plan — done properly.
The guides below cover the practical mechanics of fractional CFO engagements — cost, scope, comparison vs full-time, vertical specialisations (SaaS, agencies, D2C, PE-backed). Written for UK founders. With worked numbers throughout.
Daily rates, monthly retainers, fee models. From £195/mo reporting tier through £15k/mo senior PE tier. With worked numbers.
→ CompareAll-in cost (£140-450k full-time vs £40-130k fractional), capability gap, time-to-value, the inflection points.
→ ScopeMonth-by-month scope. In vs out. Month 1 diagnostic, month 12 outcomes, four signals they're earning the fee.
→ CompareDifferent jobs. MA makes numbers correct, CFO makes numbers change decisions. Stack at each stage.
→ TypeInterim, fractional, outsourced, virtual, part-time — what the labels actually mean. Contract terms that matter.
→ AgenciesUtilisation, project margin, cash flow lumpiness. The 90-day plan for a £2-8M creative or marketing agency.
→ D2CContribution margin per order, blended CAC vs new-customer CAC, inventory cash, marketplace VAT, channel mix.
→ PE-backedMonthly LP pack, covenant management, exit prep. When fractional works for portfolio companies, when it doesn't.
→ StartupsPre-seed to Series B — what a startup CFO actually does at each stage. Hiring plan, runway, fundraise prep.
→ SaaSARR, NRR, magic number, Rule of 40 — what SaaS CFOs measure and how to model them properly.
→ FundraiseThe CFO-led playbook for a UK startup fundraise — data room, model, narrative, the 8-week timeline.
→ DecisionThe honest answer by revenue, stage, and trigger. The 6 inflection points where a CFO becomes worth it.
→ PillarThe pillar overview — fractional CFO services, when to hire, what's included, how to match through GoCFO.
→Free, no obligation. CFOs pay us — you pay only their retainer.
If your question isn't here, email info@gocfo.co.uk.
UK fractional CFO monthly retainers in 2025/26 typically run from £195/mo (reporting tier — 0.5-1 day per month, accounts review and KPI pack) through £1,500-£4,000/mo (operating tier — 2-4 days, board pack and forecast) up to £8,500-£15,000/mo (senior/PE tier — 8-12 days, board-grade with PE experience). Day rates run £950-£1,800; senior operators £1,800-£2,500. Pick the band that matches your stage.
For most UK SMEs below £25M ARR, fractional is the right answer. A senior fractional CFO at 8 days/mo costs ~£100-140k/yr vs ~£250-450k all-in for a full-time hire when you add NI, pension, bonus, equity, recruiter fees and ramp time. Full-time becomes right above £25M ARR, in active M&A, or with regulated complexity (FCA, banking, insurance) requiring a named senior manager.
The honest triggers: approaching a fundraise (12 months or less), board pack needs to be reliable, cash visibility past 6 months is bad, growing fast and finance can't keep up, considering full-time CFO, just took PE, or M&A on the horizon. Revenue alone isn't the trigger — most SMEs at £2-5M ARR genuinely benefit; below £500k revenue, a bookkeeper plus quarterly check-in is usually enough.
A management accountant produces the numbers — monthly close, management accounts, VAT, reconciliations. A CFO uses the numbers to drive decisions — board conversation, fundraise strategy, hiring plan affordability, contract negotiation, investor relationships. Most UK SMEs above £2M revenue need both, in order. Skipping the management accountant and asking a fractional CFO to do close work is a common (expensive) mis-hire.
From form submission to first call with a matched fractional CFO is typically 3-5 working days. Engagement letters signed within 1-2 weeks; CFOs usually start within 2-3 weeks of first contact. Compare to a full-time CFO search which runs 3-6 months from kickoff to start date, plus 4-6 months of ramp. Fractional is materially faster at every step.
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