Outsourced CFO Services for UK SaaS & Tech Founders
Not every growing business needs a full-time CFO. But every growing business needs CFO-level thinking. Based in London, we work with SaaS, AI, and tech companies across the UK on a fixed monthly retainer.
At ScaleWithCFO, we do 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 are in London, Manchester, Bristol, Edinburgh, or anywhere else in the UK, the model is the same - delivery is fully remote, tailored to what your business actually needs.
New to the model? Read the 2026 UK fractional CFO guide or explore how to hire a fractional CFO.
What an outsourced 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. For guidance on how a SaaS budget should be constructed, the process is more involved than most founders expect.
Cash flow forecasting & management
Cash kills more UK startups than bad products. We build 13-week cash forecasts, manage burn rate, and make sure you are never surprised by a cash crunch. For SaaS businesses, that means understanding the gap between revenue recognition and cash collection - annual contracts paid upfront create deferred revenue liabilities that distort your P&L if not handled correctly. Our cash flow forecasting guide for UK SaaS startups covers the mechanics in detail.
Fundraising & investor relations
Whether you are 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 UK SaaS fundraises totalling £21.3M and understand what UK and European VCs expect. Explore common financial model mistakes that derail SaaS fundraising before your next round.
Management accounts & board packs
Monthly management accounts that actually tell you something useful - not just a P&L and balance sheet. Every monthly board pack includes SaaS metrics presented in the language investors speak: MRR waterfall (new, expansion, contraction, churn), ARR bridge, cohort analysis, CAC by channel with payback period, net revenue retention, gross margin analysis, and runway calculations under base, upside, and downside scenarios. The goal is a report that drives decisions, not one that gets filed away.
Exit planning & valuation
If you are considering an exit in the next 12 to 24 months, preparation starts now - not three months before you go to market. We help UK founders build a financial story that supports valuation: clean accounts under FRS 102, defensible projections, and a narrative buyers trust. See how we approached preparing a software company for a £10m exit.
Why UK founders choose an outsourced CFO
Most UK SaaS companies between Seed and Series A are not ready for a full-time CFO. A senior finance hire comes with a significant salary (typically £150,000+ for a qualified CFO in London), equity, benefits, and the risk of hiring the wrong person at the wrong stage.
An outsourced CFO provides that strategic capability for a fraction of the cost. ScaleWithCFO operates on a single full-service package priced at £2,000 to £5,000 per month nationwide - the same scope of work at every stage, with the retainer scaled to complexity (Pre-Seed/Seed £2,000-£3,000, Seed/Pre-Series A £2,500-£4,000, Series A+ £3,500-£5,000). It is a model that suits how growth-stage technology businesses actually operate.
For a detailed breakdown, the fractional CFO vs Finance Director comparison covers where each role makes sense.
Who we work with across the UK
The businesses we work with typically share a few characteristics: they have found product-market fit, they are growing but the finances feel disorganised, their investors are asking harder questions, or they are preparing for a fundraise or exit.
Most are SaaS, AI, or tech companies. Many are based in London, but we also work with founders in Manchester, Birmingham, Bristol, Edinburgh, Leeds, and across the UK. Every engagement is ongoing support with direct calendar access - founders book strategic calls and catch-ups as the business needs them, rather than a fixed number of days per week or month.
To date, ScaleWithCFO has supported 47 SaaS and AI companies and helped raise £21.3M for clients - with a 5.0 Trustpilot rating. Read client success stories to see how specific engagements have played out.
How the engagement works
A fixed monthly retainer - no day rates, no billable hours. Month-to-month terms with 30-day notice. You know exactly what you are paying and you can contact us as often as needed without watching a clock.
This is ongoing CFO support, not blocks of days. The core difference between this and a day-rate consultancy is that you do not buy a number of days - you buy a CFO who is available when the business needs them. Founders have direct access to the ScaleWithCFO calendar to book strategic calls and catch-ups as situations arise.
Startups live in a dynamic environment. Some weeks need four calls - a fundraise mid-flight, an urgent investor question, a hiring decision, a board meeting. Other weeks need none - a heads-down product sprint, a quiet operational stretch. Day-based engagements force founders to ration finance time against an arbitrary number. Ongoing support scales the engagement to the work, not the work to the engagement.
A typical engagement includes:
- Direct calendar access - book a strategic call or catch-up whenever the business needs one
- Weekly or bi-weekly financial review calls, cadence flexed by phase
- Monthly board pack preparation with written commentary and recommendations
- Quarterly strategic financial planning
- Same-day response to urgent questions between scheduled calls (90% of emails answered within 2 hours)
- Introductions to accountants, auditors, and banking partners where relevant
Pricing is scoped in writing after a discovery call, NDA, and access to your financials. Fixed retainer, no day rates, no tiered packages, no surprise invoices.
Outsourced CFO vs Finance Director
| Outsourced / Fractional CFO | Finance Director | |
|---|---|---|
| Level | Senior finance leader (CIMA/ACA qualified) | Mid-level finance leader |
| Commitment | Ongoing support, calendar access | 3-4 days per week |
| Focus | Strategy, financial modelling, investor relations | Operational finance and compliance |
| Reporting | Board-level financial narrative and SaaS KPIs | Day-to-day financial management |
| Commercial terms | Fixed monthly retainer, month-to-month | Full-time or senior part-time salary |
Signs your SaaS company needs an outsourced CFO
These are common points of friction that signal it is time to bring in senior finance support:
- No monthly forecast exists, or the forecast is consistently inaccurate
- You are surprised by your bank balance at month-end
- Your unit economics - CAC, LTV, churn - are not tracked, and financial statements arrive late
- You are approaching a funding round and the board is asking for reporting you cannot produce
- Investors are asking about net revenue retention and you are improvising the answer
- You cannot quickly calculate your runway or explain your burn rate under different scenarios
- You are considering a major hire and do not know whether the cash position supports it
- A founder is spending 20 or more hours a week on financial administration
The SaaS metrics guide sets out the specific KPIs that matter and how to calculate them accurately.
How we work
Every engagement starts with a structured discovery phase.
Weeks 1-2: Discovery
- Review current financial state - P&L, balance sheet, cash position
- Identify what reports exist and what is missing
- Understand the business model and growth trajectory
- Pinpoint immediate pain points
Months 1-2: Foundation
- Review and restructure the chart of accounts
- Build the first proper monthly financial package
- Define 8-12 KPIs that matter for the business
- Clean up historical accounting entries, misclassifications, and reconcile accounts
For a detailed picture of what this looks like in practice, the financial clean-up case study for a £1.7m ARR software company walks through a real engagement.
Frequently asked questions
Startup finance needs are uneven. Some weeks bring a fundraise, an urgent investor question, and a hiring decision at once; other weeks are quiet product sprints. A day-rate model forces you to ration finance time against an arbitrary number of days, so you either pay for days you do not use or hold back when you most need help. Ongoing support on a fixed monthly retainer scales the engagement to the work instead: you get direct calendar access to book strategic calls and catch-ups whenever the business needs them, with no day rates and no clock-watching.
An accountant records transactions, prepares tax returns, and handles compliance. A fractional or outsourced CFO focuses on strategy, financial insight, and forward-looking decision support - using the data an accountant produces to drive commercial outcomes.
Project-based engagements are available for specific deliverables - building a fundraising model, preparing a data room, or supporting financial 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 roughly 90 minutes, a board pack call of around an hour, and be available for occasional questions in between.
Yes. Outsourced CFO services make most sense once a company has meaningful traction. For very early-stage companies, project-based work - financial model setup, for example - is usually the right starting point.
All engagements run 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. As part of ongoing engagements, this includes role definition, candidate screening, and ensuring good fit for a SaaS scale-up's requirements.
Ready to bring CFO-level thinking to your business?
Free 15-minute call. No obligation, no day rates.