Every guide, model and playbook for UK SaaS finance
One hub for everything published on saasfractionalcfo.co.uk — fractional CFO services, investor-grade financial models, fundraising playbooks, SaaS metrics deep dives, board-pack templates and AI infrastructure cost guides. Built for founders preparing to scale, raise or exit.
01Start here
New to the site? These four pages cover what most UK SaaS founders are looking for — pricing, scope, comparisons and a free model template.
Outsourced CFO UK
What an outsourced CFO does for UK SaaS, typical scope, pricing bands and how engagements are structured.
PricingFractional CFO Pricing
UK market benchmarks: day rates, monthly retainers, and what you should expect to pay from seed to Series B.
ComparisonFractional vs Full-Time CFO
Six-dimension cost, dilution and capability comparison to help you decide which model fits your stage.
Free templateSaaS Financial Model
Investor-grade three-statement model built around ARR, cohorts, NRR and burn — used in live fundraises.
02Fractional & outsourced CFO services
Core service pages covering scope, pricing and engagement models for UK SaaS companies between seed and Series B.
Home
Overview of services, who I work with, and how engagements are structured.
Services
Full menu: fractional CFO, fundraising support, board reporting, financial modelling.
Outsourced CFO UK
SaaS-native outsourced finance leadership, embedded in two weeks.
Fractional CFO UK
When to hire one, what they own, and how to structure the relationship.
AI Fractional CFO
CFO support for AI-native companies — token economics, GPU spend, inference COGS.
Fractional CFO for AI Startups
For UK AI startups specifically: model substitution scenarios, infra forecasting.
Fundraising Support
End-to-end: model, narrative, data room, investor Q&A, term-sheet review.
About
Background, approach and how I work with founders and boards.
03By location & stage
Location pages for UK ecosystems and stage-specific pages for Series A through Series C SaaS finance leadership.
Fractional CFO London
SaaS CFO support for London-based VC-backed companies.
LocationFractional CFO Manchester
Local context: investor landscape, salary benchmarks, ecosystem.
LocationFractional CFO Edinburgh
Scottish SaaS finance leadership — SE/Scottish Enterprise context.
StageSeries A CFO
Investor-grade prep: clean metrics, cohort model, board-ready narrative.
StageSeries B / C SaaS CFO
Scaling finance ops, FP&A function, board governance for growth-stage SaaS.
StageCFO for SaaS Fundraise
Dedicated fundraise CFO engagement — model, data room, investor process.
04Fundraising & capital
Practical playbooks on raising venture capital, structuring debt, navigating diligence and protecting founder economics through term-sheet design.
Bridge round vs venture debt
When each makes sense, dilution maths and how lenders price SaaS risk.
Venture debt vs equity
Side-by-side cost of capital comparison for UK SaaS founders.
SaaS QoE preparation
How to prepare for a Quality of Earnings review before a Series A/B.
SaaS data room checklist
Folder structure, document priority and red flags investors look for.
12-month fundraise timeline
Month-by-month sequencing from prep through term sheet to close.
Rev rec mistakes
The ARR/MRR mistakes that derail diligence — and how to fix them upstream.
Liquidation preferences
How 1x non-participating vs 2x participating changes founder exit proceeds.
Pre-money vs post-money
Valuation maths, option-pool shuffles and dilution implications.
Due diligence checklist
Financial, commercial and legal diligence — what to prepare in advance.
05SaaS metrics & unit economics
The metric definitions, formulas and benchmarks investors actually scrutinise — ARR, NRR, LTV/CAC, Rule of 40, Burn Multiple and more.
ARR definitions
Committed vs contracted vs run-rate ARR — and which investors actually trust.
NRR vs GRR
Net vs gross retention — definitions, cohort treatment, top-quartile benchmarks.
NRR/GRR for fundraising
How VCs read retention curves and what triggers term-sheet adjustments.
LTV / CAC ratio
Calculating it properly with cohort gross margin and blended payback.
Rule of 40 (early-stage)
How to apply Rule of 40 below £5m ARR without misleading the board.
Burn multiple
The single capital-efficiency metric Series B investors anchor on.
Clean metrics for Series A
The metric pack to walk into Series A meetings with — and what to omit.
SaaS metrics pack
Reusable monthly metric template for board reporting and investor updates.
SaaS pricing mistakes
Common pricing errors that destroy expansion revenue and retention.
Annual vs monthly billing
Cash, churn and retention implications of each billing cadence.
06Financial modelling & forecasting
Build investor-grade financial models, 13-week cash forecasts, cohort engines and deferred-revenue schedules that survive diligence.
Financial model mistakes
The structural errors that get models thrown out in diligence.
13-week cash forecast
Direct-method short-range forecast for tight-runway scenarios.
Deferred revenue forecasting
Annual-billed SaaS: building a deferred-rev waterfall that ties to cash.
Cohort-based SaaS model
Replace blended assumptions with cohort retention and expansion curves.
Cohort churn at scale
Forecasting churn when you have 24+ months of cohort history.
SaaS board pack
A board-pack template VCs actually engage with — narrative + numbers.
07AI & infrastructure costs
Forecasting and controlling the unique cost lines of AI-native SaaS: GPU spend, token economics and inference COGS as a percentage of revenue.
08CFO hiring & finance org
When to hire which type of finance leader — and how to structure the finance function from first hire through to a full FP&A team.
Ready for a SaaS-native fractional CFO?
Fixed monthly fee. No long-term contract. Embedded in two weeks. Book a free 30-minute strategy call and we’ll map out exactly what your finance function needs to support your next milestone.