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 17 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