Fractional CFO Services Across the UK
Not every growing business needs a full-time CFO. But every growing business needs CFO-level thinking. Based in London, ScaleWithCFO works with SaaS, AI, and tech companies across the UK on a fixed monthly retainer.
ScaleWithCFO does not just review your numbers once a month. We embed into your team, join your leadership meetings by video, and bring financial clarity to every strategic decision. Whether you're in London, Manchester, Birmingham, Edinburgh, or anywhere else in the UK, delivery is fully remote - shared dashboards, regular video calls, Slack or email, tailored to what your business actually needs.
New to the model? Read the 2026 UK fractional CFO guide or skip ahead to how to hire a fractional CFO. City-specific landscape pages: London, Manchester, Bristol and Edinburgh.
What a Fractional CFO Does for UK Businesses
Senior financial leadership across every area that matters.
Financial Strategy & Planning
Building your financial model, setting meaningful KPIs, creating budgets tied to your growth plan, and running scenario analysis. This includes long-range planning, monthly reforecasts, and making sure your financial plan connects to your commercial strategy - not just your accounting.
Cash Flow Forecasting & Management
Cash kills more UK startups than bad products. We build 13-week cash forecasts, optimise your working capital cycle, manage burn rate, and make sure you never get surprised by a cash crunch. For SaaS businesses, that means understanding the gap between revenue recognition and cash collection.
Fundraising & Investor Relations
Whether you're raising a Seed round, Series A, or preparing for exit, we build the data room, prepare investor-ready financials, model your unit economics, and present a compelling financial narrative. We have supported multiple UK SaaS fundraises and know what UK and European VCs look for.
Management Accounts & Board Packs
Monthly management accounts that actually tell you something useful. Not just a P&L and balance sheet - SaaS metrics like MRR, churn, LTV:CAC, and net revenue retention, presented in a way that drives decisions. Plus board packs that keep investors informed and confident.
Exit Planning & Valuation
If you're thinking about an exit in the next 12-24 months, now is when the financial preparation starts. We help UK founders build the financial story that maximises valuation - clean accounts, defensible projections, and a narrative that buyers and investors trust.
Situations We Work In
Most UK SaaS engagements fall into one of five situations. The retainer scope flexes to whichever applies, but the full-service package and price band stay the same.
Pre-Seed -> Seed fundraise prep
Founders assembling a fundraise pack from spreadsheets, with no benchmark for what UK angels and pre-seed funds actually want. We build the first driver-based financial model, set up MRR tracking, clean the accounts enough to share, and prepare a tight 12-month forecast with conservative, base and upside scenarios.
See the seed-stage model guide →Seed -> Series A fundraise prep
Investor scrutiny sharpens at Series A: cohort retention, LTV:CAC, NRR, top-down and bottom-up triangulation, multi-scenario models, a full data room. We build the Series A model, reconcile MRR to the P&L, layer in cohort retention and unit economics, prepare the data room, and support the actual investor calls and Q&A.
See the Series A model guide →Post-raise scale-up
Just closed the round. The board cadence kicks in, the hiring plan needs financial discipline, runway management gets real. We deliver the monthly board pack by the 15th, update the 13-week cash forecast weekly, tie the hiring plan to milestones, and review the KPI dashboard monthly with the CEO and exec team.
See how we run monthly reporting →Exit preparation (12-24 months out)
Clean financial history becomes the difference between a £X and £2X valuation. Buyers and PE houses audit everything. Starting 12-24 months ahead of an exit, we clean historicals, rebuild the chart of accounts, document accounting policies, prepare the vendor data room, and build the financial story buyers test against.
See exit preparation services →Financial clean-up and restructure
MRR that does not reconcile to the P&L. Revenue recognition that is broken. Chart of accounts that is a mess. Annual contracts dropped straight to revenue. We rebuild the chart of accounts by department, fix revenue recognition under FRS 102 and IFRS 15, reconcile Xero with Stripe and HubSpot, set up proper accruals and deferred revenue, and produce the first month of clean management accounts.
See the financial clean-up workflow →UK SaaS Sectors We Serve
Different SaaS sectors have different accounting and reporting twists. We bring sector-specific shape to revenue recognition, deferred income, and KPI design - not a one-size-fits-all template.
LegalTech
Case management SaaS, billable WIP and unbilled revenue, hourly-vs-flat-fee revenue mix, time recording integrations. Revenue recognition gets twisty when the platform charges flat and the underlying engagement charges hourly.
EdTech
Per-seat or per-cohort billing, academic-year revenue smoothing, multi-year contracts with annual or termly invoicing, schools-vs-private-tutor segmentation in cohort retention.
FinTech
FCA capital adequacy reporting, AML and KYC operational metrics, regulatory capital ring-fencing, interchange revenue accounting where cards are involved.
PropTech
Milestone-based revenue recognition for project deployments, hardware-as-a-service hybrids, marketplace fee accounting (gross-vs-net), data licensing layers on top of the SaaS subscription.
ConTech (construction tech)
Long enterprise sales cycles, project-based deployments, integration and implementation revenue separated from recurring software, deferred revenue across long onboarding tails.
InsurTech
Premium revenue split between underwriting partner and platform, claims operational cost recognition, regulatory reserves, broker commission accounting and clawbacks.
MarTech
Usage-based pricing models, ad-credit liability accounting, consumption true-up at period end, freemium-to-paid cohort tracking, channel partner revenue splits.
HRTech
Per-employee-per-month pricing, payroll integration data feeds, ATS-vs-HRIS module split, GDPR data residency cost allocation if EU and UK customers share infrastructure.
Why UK Founders Choose a Fractional CFO
Most UK SaaS companies between Seed and Series A aren't ready for a full-time CFO. A senior finance hire comes with significant salary, equity, benefits, and the risk of hiring the wrong person. But you still need the strategic thinking.
A fractional CFO gives you that expertise for a fraction of the cost. Ongoing support, not blocks of days. You get direct calendar access to book strategic calls and catch-ups whenever the business needs them - scaling up around fundraising, board meetings or year-end, easing back when things are steady. Startups don't run on a fixed weekly schedule; the engagement matches that.
Prefer to weigh up the models first? See why ongoing CFO support beats paying for days per week, how outsourced CFO services work, and when an interim CFO makes sense instead.
Who We Work With Across the UK
The businesses we work with share a few characteristics: they've found product-market fit, they're growing but the finances feel chaotic, their investors are asking harder questions, or they're preparing for a fundraise or exit.
Most are SaaS, AI, or tech companies based in London, but we also work with founders in Manchester, Birmingham, Bristol, Edinburgh, Cambridge, Leeds, Newcastle, Nottingham, and across the UK. Every engagement is ongoing support with direct calendar access - book strategic calls and catch-ups as the business needs them, rather than a fixed number of days per week or month. See dedicated pages for London, Manchester, Bristol, Cambridge, Leeds, Newcastle, Nottingham and Edinburgh.
How the Engagement Works
A fixed monthly retainer, not day rates. You know exactly what you are paying and you can call as often as you need without watching the clock. Month-to-month terms with 30-day notice.
A typical engagement includes weekly or bi-weekly financial review calls, monthly board pack preparation, quarterly strategic financial planning, on-demand advice between scheduled calls, and introductions to accountants, auditors, and banking partners.
Pricing is scoped in writing after the discovery call, NDA, and access to your financials - once we understand the actual scope of work. No day rates, no tiered packages, no surprise invoices.
How Much Does a Fractional CFO Cost?
Fixed monthly retainer, £2,000 to £5,000 per month, nationwide. Same full-service scope at every stage - cash flow forecasting, board packs, fundraising support, financial modelling, and exit prep all included. No tier-gating, no day rates, no surprise invoices.
Building the first financial model, setting up management accounts, getting reporting investor-ready before the next raise.
Tightening SaaS metrics, building the Series A model, supporting the active fundraise and data room preparation.
Full board pack cycle, multi-entity consolidation, exit prep, post-raise scale-up, optional finance team build.
Compared to a full-time UK CFO
A full-time UK SaaS CFO costs £130,000 to £200,000+ in base salary. Add employer NIC (13.8%) and pension (3-5%) and the all-in cost is roughly £155,000 to £245,000 per year, before equity. A fractional CFO retainer at £24,000 to £60,000 per year delivers the same strategic finance leadership at 15-30% of the cost - with month-to-month terms and 30-day notice.
For a fuller cost breakdown by stage, see the UK fractional CFO cost guide.
What a Fractional CFO Actually Does at Each SaaS Stage
The pricing band on this page maps to the work intensity at each stage. Here is what the deliverables, reporting cadence, and investor expectations look like across the typical UK SaaS journey from Pre-Seed to exit prep.
Pre-Seed (£0 - £250K ARR)
£2,000-£3,000/moFirst version of the financial model, basic management accounts, runway calculator, founder dashboard for cash and headcount. Reporting cadence is quarterly to investors, monthly internally. The focus is getting the structure right before the first institutional round - chart of accounts by department, MRR tracking from day one, founder share of voice on the financial story.
Seed (£250K - £1M ARR)
£2,000-£3,000/moMonthly board pack, SaaS KPI dashboard (MRR, ARR bridge, gross margin, CAC payback), 13-week cash forecast, fundraising-ready financial model with cohort retention. Reporting cadence moves to monthly. First proper variance commentary on the P&L. Stripe / HubSpot reconciled to Xero, deferred revenue schedule set up properly.
Pre-Series A (£1M - £3M ARR)
£2,500-£4,000/moData room build-out, Series A financial model with full SaaS KPI depth (NRR, GRR, burn multiple, LTV:CAC, cohort curves), customer concentration analysis, sensitivity / scenarios pack. Active fundraise support: investor Q&A, due diligence response, comparable-multiple positioning, term sheet review alongside the lawyer.
Series A & post-A (£3M - £10M ARR)
£3,500-£5,000/moMonthly board pack at investor cadence, KPI dashboard reconciled to the P&L, hiring plan tied to milestones, 13-week cash forecast updated weekly, quarterly variance review with the exec team. Multi-entity consolidation if you have a US sub. Post-raise covenant reporting if the round included venture debt. Building the next-stage finance team alongside.
Exit preparation (12-24 months out)
£3,500-£5,000/moClean historicals under FRS 102, defensible UK SaaS valuation comparables, vendor data room, financial story buyers test against. Quality-of-earnings dry run before the formal QofE process starts. Working capital normalisation, debt-like items audit, deferred revenue and accruals review. The goal is that on the day a buyer's diligence team arrives, the answer to every financial question is already in the data room.
See the live interactive board pack platform for what monthly reporting actually looks like at each stage, or read more on investor-ready board pack delivery.
UK-Qualified and Built for SaaS
CIMA-qualified management accountant. 47+ UK SaaS, AI and tech companies supported. £21.3M raised for clients.
CIMA Member-in-Practice
Chartered Institute of Management Accountants qualification, focused on the forecasting, FP&A and decision-support work a SaaS CFO actually does day-to-day - not just statutory compliance.
Track record with UK SaaS
47+ UK SaaS, AI and tech companies supported. £21.3M raised for clients across Seed and Series A rounds. 5-star Trustpilot, founder references on request after the discovery call.
Fractional CFO vs Finance Director
Fractional CFO
- Senior finance leader (qualified accountant / ex-corporate CFO)
- Ongoing support, calendar access, no fixed days
- Strategy, financial modelling, investor relations
- Board-level thinking
- Monthly retainer, month-to-month terms
Finance Director
- Mid-level finance leader
- 3-4 days per week
- Operational finance and compliance
- Day-to-day financial management
- Full-time or senior part-time salary
Want more detail? See the full fractional CFO vs finance director breakdown, compare a fractional CFO vs a full-time CFO, read what a fractional finance director actually does, or start with how to choose a fractional CFO in the UK - network firms, boutique teams and direct specialists compared.
Signs Your SaaS Company Needs a Fractional CFO
You have no monthly forecast, or your forecast is wildly inaccurate.
You are surprised by your bank balance at month-end.
You do not know your unit economics - CAC, LTV, churn - and your financial statements are always late or missing.
You are approaching a funding round and your board is asking for monthly reporting you cannot produce.
Investors are asking about unit economics and you are making it up.
You cannot quickly answer what your runway is or how much you are burning.
You are considering a major hire and do not know if you can afford it.
Your founder is spending 20+ hours per week on financial admin instead of growth.
Not sure on timing? Here is when a UK SaaS startup should hire a fractional CFO.
How We Work
Every engagement starts with a discovery phase.
- Review your current financial state - P&L, balance sheet, cash position
- Identify what reports exist and what is missing
- Understand your business model and growth trajectory
- Pinpoint the immediate pain points
- Review and restructure your chart of accounts
- Build your first proper monthly financial package
- Define the 8-12 KPIs that matter for your business
- Clean up old accounting entries, misclassifications, and reconcile accounts
What the engagement actually looks like.
Every UK SaaS fractional CFO engagement uses the same tool you can explore below. Click any sidebar tab - dashboard, MRR schedule, 3-way forecast, scenarios, runway calculator, pipeline.
Frequently Asked Questions
An accountant focuses on recording transactions, preparing tax returns, and compliance. A fractional CFO focuses on strategy, financial insight, and decision-making.
The terms overlap heavily in UK SaaS practice. Fractional CFO emphasises the part-time, multiple-client model. Outsourced CFO emphasises the external relationship. Part-time CFO emphasises the structure. In practice they describe the same service: a senior, qualified finance leader on a fixed monthly retainer with ongoing support and month-to-month terms - founders book strategic calls and catch-ups directly via calendar as the business needs them, rather than running on a fixed number of days per week. Interim CFO is different: high intensity for a defined period (typically 3-12 months) to bridge a gap or drive a specific project like a fundraise, exit, or system implementation.
Across the UK market in 2026, fractional CFO retainers run from £2,000 to £10,000+ per month depending on provider, scope and stage. ScaleWithCFO operates on a single full-service package priced at £2,000 to £5,000 per month nationwide: Pre-Seed/Seed £2,000-£3,000, Seed/Pre-Series A £2,500-£4,000, Series A+ £3,500-£5,000. Same scope at every stage, fixed retainer, no day rates, no tiered packages.
Project-based engagements are available for specific deliverables - preparing a fundraising model, building a data room, running a financial audit for due diligence. Scope and fees are agreed in writing after the discovery call and NDA.
Typically 2 to 4 hours per month. You will attend a monthly review call of about 90 minutes, perhaps a board pack call of an hour, and be available for occasional questions.
Hybrid is the norm. Most engagements are one day a month on-site for the board day or leadership offsite, with the rest of the work delivered remotely via shared dashboards, regular video calls, and Slack or email. For founders in London the on-site cadence can flex (some prefer fortnightly). For founders in Manchester, Bristol, Edinburgh, Leeds, Cambridge, Oxford and elsewhere the model is the same with more weight on remote, and occasional on-site visits for board days.
Yes, though fractional CFO services make more sense once you are tracking meaningful traction. Project-based work suits very early companies needing financial model setup.
Common scenario. A fractional CFO and an in-house FD or controller cover different layers of the finance function. The controller or FD owns the books, statutory accounts, payroll, AP/AR and day-to-day reconciliations. The fractional CFO owns the forward-looking strategy: investor reporting, financial modelling, scenario planning, board pack design, and supporting fundraising or exit. They are complementary, not duplicative. We brief in regularly with the existing finance team so reporting cadences align.
All services operate on month-to-month terms with 30-day notice for flexibility. In practice, many founders stay 2-3+ years - through clean-up, fundraising, and the early scale-up phase. Some end after a specific event (fundraise, exit); others continue until the company is large enough to justify a full-time CFO.
Yes, the service includes role definition, candidate screening, and ensuring good fit for SaaS scale-ups as part of ongoing engagements.
Ready to bring CFO-level thinking to your business?
Free 15-minute call. No obligation, no day rates.