Fractional CFO Services for SaaS Companies UK | SaaS Fractional CFO

Fractional CFO Services

Everything a Series A–ready
finance function needs.

We work exclusively with SaaS and AI companies in the UK. Every service below is designed around the specific financial challenges of subscription and usage-based businesses.

Book a Free Discovery Call →
Core Retainer

SaaS Metrics & Monthly Reporting

Clean, consistent, investor-grade SaaS metrics produced every month. We build your MRR bridge, track cohort retention, calculate your LTV:CAC, and produce a board-ready dashboard that tells the right story about your business.

  • MRR & ARR bridge (new, expansion, contraction, churn)
  • Net Revenue Retention & Gross Revenue Retention
  • CAC, LTV & payback period by channel and segment
  • Gross margin and contribution margin analysis
  • Rule of 40 and Magic Number tracking
  • Monthly management accounts & P&L commentary
Get Started →

Sample Monthly Dashboard

MRR
£148,400+8.2%
NRR
116%
Gross Churn
0.8%-0.2pp
LTV:CAC
4.8x
Runway
17 months

3-Statement Financial Model

Revenue model with cohort buildup
P&L, balance sheet, cash flow linked
5-year base, bear, bull scenarios
Headcount & hiring plan integration
Funding scenarios and dilution waterfall
Investor-ready assumption documentation
One-off project
From £3,500 + VAT
Delivered in 5–7 working days
Financial Modelling

Investor-Grade SaaS Financial Model

Most early-stage SaaS models fall apart in a Series A data room. A lead investor’s finance team will pull at every assumption. We build models that survive that scrutiny—with documented assumptions, flexible drivers, and a revenue model that cohorts correctly.

Every model we build is a true 3-statement model. The P&L, balance sheet and cash flow are all linked. Revenue is built up by cohort and tier. The model answers the questions investors ask before they ask them.

Learn more about our financial model →
Fundraising

Fundraising & Investor Readiness

We prepare SaaS companies to raise with confidence. From the first investor conversation to the signed term sheet, we manage the financial side of your fundraise so you can focus on the relationships.

  • Data room build and management
  • Financial due diligence preparation
  • Vendor due diligence (VDD) report
  • Term sheet and cap table review
  • Investor Q&A preparation
  • Dilution modelling and waterfall analysis
Learn more about fundraising support →

Fundraise Timeline

1
M–6: Metrics audit & model build
Clean the numbers, build the story
2
M–3: Data room preparation
Investor-grade documentation
3
Live: DD support & Q&A
We handle the financial questions
4
Close: term sheet & cap table
Deal mechanics reviewed

AI-Specific Finance

GPU & compute cost modelling
Cost per inference, cost per API call, margin per unit of revenue
Usage-based pricing finance
Revenue recognition, consumption forecasting, credit burn-down
R&D tax credit optimisation
HMRC-compliant claim preparation and cash flow timing
AI investor reporting
Unit economics narrative for AI-first VC and strategic investors
AI Companies

Fractional CFO for AI Companies

AI companies have finance challenges that generalist CFOs do not understand. GPU costs that dwarf traditional SaaS infrastructure. Usage-based revenue models that make standard MRR metrics misleading. R&D expenditure that must be structured correctly to maximise tax credits.

We build the financial model and reporting stack that reflects the actual economics of an AI business—and that stands up to the scrutiny of a specialist AI investor.

Learn more about AI company CFO →

Pricing

Fixed fees. No surprises.

All fees are agreed before work starts. No hourly billing. No retainer creep.

Starter
£2,500
per month + VAT
  • Monthly SaaS metrics dashboard
  • Management accounts review
  • Runway & burn modelling
  • Monthly CFO call (2hrs)
Get Started →
Most Popular
Growth
£4,500
per month + VAT
  • Everything in Starter
  • Full board pack preparation
  • Investor reporting & liaison
  • Financial model maintenance
  • Board attendance (monthly)
  • Weekly CFO availability
Get Started →
Fundraise
POA
fixed project fee
  • Financial model build
  • Data room construction
  • Due diligence support
  • Term sheet & cap table review
  • Investor Q&A preparation
Get a Quote →

All retainers are month-to-month with 30 days’ notice. No long-term lock-in.

Ready to build a finance function
that scales with you?

Book a free 30-minute call. We will assess your current metrics, identify the gaps, and tell you what you need.

Book a Free Discovery Call → +44 7767 629 008
Kishen Patel — ICAEW Chartered Accountant, Fractional CFO for SaaS
ACA · ICAEW

Your Fractional CFO

Kishen Patel ACA

ICAEW Chartered Accountant  ·  Big Four Trained  ·  London

Kish is the founder of Consult EFC and the CFO behind SaaSFractionalCFO.co.uk. He is an ICAEW Chartered Accountant (ACA) with over 12 years of experience across Big Four audit, investment banking, and corporate finance advisory.

He has worked with over 100 UK businesses — from pre-revenue SaaS startups raising their first SEIS round to established software companies preparing for Series B and exit. Every engagement is led personally by Kish. Your work is never passed to a junior.

As a regulated ICAEW member, Kish is held to the highest professional and ethical standards in UK accountancy — the same standards that FTSE 100 boards and global investors rely on.

12+

Years finance leadership

100+

UK businesses advised

£40m+

Capital raised

Big 4

Trained

View full profile at ConsultEFC.com

Related Pages

Fractional CFO for SaaS UK SaaS Metrics Fundraising Support SaaS Financial Model AI Company CFO SME Business Valuation
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