Fractional CFO Jobs UK

A fractional CFO is a senior finance leader who works with a company part-time — typically 1–3 days a week, usually on a fixed monthly retainer — giving the strategic financial leadership of a full-time CFO without the salary, equity, recruitment risk, or notice period. Fractional CFO jobs involve owning the board pack, the fundraising model, cash-flow and runway, unit economics, and investor reporting.

Fractional CFO jobs are distinct from: an interim CFO (full-time temporary cover for a specific event), a finance director (operational, not always strategic), and outsourced/virtual variants. Fractional CFOs bring board-level strategic thinking with the flexibility to scale engagement up or down based on company needs.

What They Own

Strategic financial leadership: Board pack creation, fundraising models, cash-flow forecasting and runway analysis, unit economics optimization, investor reporting and relations, financial controls and compliance frameworks.

Transaction leadership: M&A advisory, exit preparation, due diligence management, valuation modeling, regulatory compliance (FRS 102, UK SRS S1 sustainability reporting for listed companies), treasury management and commercial decision support. Many CFOs evaluate carbon reporting software to streamline sustainability reporting requirements.

What They Don't Own

Operational administration: Bookkeeping, payroll processing, VAT returns, routine transaction recording. Fractional CFOs focus on strategic value, not operational tasks — these are handled by existing finance teams, outsourced providers like Consult EFC, or hired separately.

FD vs CFO in UK SMEs

Finance Director (FD) = more operational, day-to-day finance, reporting, controls. CFO = strategic focus on fundraising, M&A, board engagement, investor relations. In UK SMEs often used interchangeably, but CFO skews strategic while FD skews operational.

Core Skills

Essential skills include financial modeling, strategic planning, cash flow forecasting, fundraising experience, M&A advisory, and strong stakeholder communication. Technical expertise spans accounting standards, financial systems implementation, investor relations, board reporting, and regulatory compliance across various industry sectors.

With UK SRS S1 sustainability reporting standards becoming mandatory from 2027, fractional CFOs increasingly need expertise in UK SRS S1 general requirements for listed company compliance. Many CFOs are evaluating best carbon reporting software platforms to ensure SECR and UK SRS compliance.

Inside vs Outside IR35 Explained

IR35 legislation determines whether a contractor is taxed as an employee or can operate through their limited company. For fractional CFO roles, this affects take-home pay by 20-30% and engagement flexibility.

Small clients are exempt — the contractor self-determines. Medium, large, and public sector clients must issue a written Status Determination Statement (SDS) to both contractor and fee-payer with reasoning. HMRC requires "reasonable care" — blanket determinations fail this test.

What Keeps Fractional CFOs Outside IR35

Multiple concurrent clients — working with 2-4 companies simultaneously demonstrates genuine business operation, not disguised employment. Financial risk — fixed monthly retainers regardless of company performance. Own equipment — using personal laptop, software licenses, professional indemnity insurance.

Genuine autonomy — setting own methodology for board reporting, choosing financial systems, determining meeting schedules. No mutuality of obligation — either party can terminate with agreed notice. Milestone invoicing — billing for deliverables (board packs, fundraising models) not time.

April 2026 Changes

Small-company thresholds rise from April 2026 — more UK businesses fall outside off-payroll rules, shifting determination back to contractors. This benefits the fractional CFO market by reducing IR35 assessment burden on growing companies.

Sources: Fractionus IR35 guide, Kingsbridge IR35 responsibility, Daniel Wolfson contractors guide