01
Right-first-time velocity
Deliverables engineered to clear scrutiny on first review.
Vol. I — Issue 01
Startup speed · Institutional grade
Strategic capital infrastructure for founders and the capital that backs them.
An AI-native Fractional CFO practice across Europe and a UK SEIS / EIS Advance Assurance mandate — used by founders, family offices, impact funds and angel syndicates.
Request consultationBy appointment · HMRC-aligned
100%
HMRC Advance Assurance success rate
<20
Median days to HMRC decision
5
Operating jurisdictions
1
Engagement seat available
§ 01
The problem
A venture crosses £500K of revenue and the spreadsheet stops working. Board questions sharpen, runway gets contested, an SEIS round needs an Advance Assurance letter, the next investor wants a model that survives diligence — and there is no CFO in the seat.
Hiring a full-time CFO at this stage costs £140K–£220K all-in and is rarely the right shape for a 12-month horizon.
§ 02
Who feels it
Three buyers. One operating standard.
Buyer 01
Founders £500K – £10M revenue
Post-MVP, revenue evidence, raising in 6–12 months. Needs a model that survives diligence and a deck that connects story to numbers.
Buyer 02
Family offices & impact funds
Direct startup portfolios with mixed CFO maturity. Needs portfolio-level visibility, model standardisation and raise-readiness scoring across companies.
Buyer 03
Angel syndicates & investor groups
Backing UK ventures into SEIS / EIS rounds. Needs Advance Assurance secured, BIR transitional positions defended, and a clean cap table at close.
§ 03
The solution
Two specialist stacks. One standard.
Stack 01 / Europe
Fractional AI CFO
Investor-grade models, board reporting and AI-accelerated FP&A — for a single venture or across a portfolio.
Enter the Fractional CFO stack
Stack 02 / United Kingdom
SEIS / EIS Advance Assurance
UK HMRC mandate. 100% Advance Assurance success rate. Aligned with the April 2026 EIS / VCT changes and BIR transitional rules.
Enter the SEIS / EIS stack
§ 04
Why us
Why this practice is built to solve it.
02
Institutional rigour at seed stage
Series C standards applied early — investor-grade, audit-ready, defensible.
03
Radical transparency
Every figure traceable. Every claim sourced. No hidden assumptions.
§ 05
Case in point
Mandate · anonymised
An impact-aligned investor with a direct startup portfolio.
Details abstracted at the principal's request.
Shape — a multi-company portfolio of early-stage ventures, mixed CFO maturity, common reporting gaps, several companies approaching UK rounds where SEIS / EIS positioning was unclear.
Brief — triage the portfolio, standardise the financial model template, score raise-readiness per company, secure Advance Assurance for the UK-domiciled subset, and produce a single board-pack format the principal can read across all holdings.
Outcome — portfolio-level visibility in one quarter; companies that were investable became legibly so; the principal stopped reading ten different model formats.
Family officesImpact fundsAngel syndicatesAccelerator cohorts
§ 06
Market size & need
The addressable problem, in numbers.
~36,900
UK scale-ups — high-growth SMEs in the £500K–£20M revenue band, the core fractional-CFO target.
Source — ScaleUp Institute, Annual ScaleUp Review 2024~43,000
UK SMEs with turnover £1M–£10M (ONS business population) — the addressable mid-market for outsourced finance leadership.
Source — ONS / BEIS Business Population Estimates, 2024~150,000
EU-27 scale-ups in the €1M–€10M revenue band across DACH, France, Benelux and the Nordics.
Source — Eurostat SBS (sbs_sc_sca_r2), 2023 release>90%
of UK ventures under £10M revenue operate without a full-time CFO — finance is owned by the founder or a part-time bookkeeper.
Source — ONS Business Demographics + ScaleUp Institute survey, 2024€750M → €1.5B
European Fractional CFO services market, 2023 → 2028 (14.8% CAGR).
Source — Verified Market Research / Grand View Research synthesis, 2024£140K – £220K
All-in cost of a full-time UK CFO at Series A — base, equity, bonus, employer NI. Fractional clears the same scope at a fraction of the cost.
Source — Robert Half UK Salary Guide, 2025Read together: ~180,000 UK and EU ventures sit inside the £/€500K–£/€10M band where spreadsheets break, a full-time CFO is unaffordable, and a fractional mandate moves the unit economics — not a cost line, a raise multiplier. Geography: UK primary, with active mandates across DACH, France, Benelux and the Nordics.
§ 07
Journal · Built in public
Field notes from live mandates.
How an AI-native Fractional CFO actually ships, week by week, board pack by board pack. The first mandate note is live.
Mandate · Live
London · Logistics & e-commerce
8 min read
How we shipped our first AI Interim CFO engagement — Logistics.AI
Pre-Series A. 18-month CFO track. Real-time P&L with contribution margins, AI-driven AR/AP, and a path to profitability shipped in the first 90 days.
Read the noteNotice
Engagement status
One Fractional CFO seat remaining for the current window.
New mandates close 5 July 2026. Subsequent applications enter the next review queue.
§ 07
Pick your gate
Three doors. One conversation.
Tell us which problem you're solving — we route you to the right mandate, the right deliverable and a 30-minute call with a real human. No discovery deck, no SDR.
For founders · £500K–£10M revenue
Get a board-ready financial OS in 30 days.
AI-native model, monthly close, investor reporting and a 5-year plan that survives a Series A diligence.
- 5-year model rebuilt from your stack (Stripe, Xero, HubSpot).
- Monthly board pack: cash runway, unit economics, cohort retention.
- Direct line for term-sheet, hiring and pricing decisions.
Book a 30-min CFO call
or 2-line brief
The CFO Stack is a trading name of Canopy Ventures Ltd · Company No. 16585392 · Registered in England & Wales