Fractional CFO: the complete guide for SMEs and startups
A Fractional CFO - or outsourced Chief Financial Officer - is a senior finance professional who works within your company without being a full-time employee. They assume the same responsibilities as an in-house CFO (financial management, cash flow, reporting, investor relations) but on a flexible basis: part-time, project-based or monthly retainer.
At Iter Advisors, we support SMEs, startups and scale-ups in structuring and managing their finance function. Our CFOs work on a part-time or project basis to help you make the best strategic decisions.
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Iter Advisors, your strategic partner
Iter Advisors is a Fractional CFO firm based in Barcelona, Paris and Toulouse. We provide our clients with experienced finance directors (10+ years of experience) capable of addressing all the financial challenges of a growing company.
Our approach is built on three fundamental pillars: technical expertise, strategic vision and flexibility. Each engagement is tailored to meet the specific challenges of your business.
With over 85 companies supported and more than EUR 100 million in fundraising completed by our clients, Iter Advisors has established itself as a leading player in outsourced CFO services in France and Spain.
What is a Fractional CFO?
A Fractional CFO, or outsourced Chief Financial Officer, is a finance professional who works within your company without being a full-time employee. They assume the same responsibilities as an in-house CFO: financial management, cash flow, reporting, strategic support and investor relations.
Definition and key role
The Fractional CFO manages your company's finance department on a part-time or project basis. Their role is to structure, manage and optimize the finance function to support business growth.
They address key areas: business plan development, cash flow forecasting, implementation of management tools, fundraising preparation, and optimization of accounting and financial processes.
Difference between CFO, Finance Director and Controller
The CFO (Chief Financial Officer) carries both strategic and operational financial responsibilities. A Finance Director typically focuses on day-to-day financial operations, while a Financial Controller concentrates on accounting accuracy and compliance.
At Iter Advisors, our professionals combine these different skills to provide comprehensive support adapted to the specific needs of your organization.
Fractional CFO vs in-house CFO: the comparison
An in-house CFO costs between EUR 80,000 and 150,000 gross per year (plus 25-42% employer charges), totaling EUR 100,000 to 213,000 per year. A Fractional CFO costs EUR 2,000 to 8,000 per month depending on the scope, or EUR 24,000 to 96,000 per year.
An in-house CFO offers daily presence and deep company knowledge, but involves long-term commitment and high fixed costs. A Fractional CFO brings flexibility, multi-sector perspective and an extensive partner network, with no long-term commitment.
For companies with EUR 1-50M in revenue, a Fractional CFO is often the most relevant solution: high-level expertise at a controlled cost, with the ability to scale up or down according to growth phases.
| Criterion | Fractional CFO | In-house CFO |
|---|---|---|
| Annual cost | EUR 24,000 – 96,000 | EUR 100,000 – 213,000 (including employer charges) |
| Commitment | No minimum duration, flexible month-to-month | Full-time employment, 3-month notice period |
| Time to deployment | Operational in 1-2 weeks | 3-6 months (recruitment + onboarding) |
| Industry expertise | Multi-sector with external perspective | Single-company expertise |
| Network (VCs, banks, lawyers) | Extensive, shared across clients | Limited to individual background |
| Presence | 1-8+ days/month, hybrid | 5 days/week, on-site |
| Best for | SMEs and startups with EUR 1-50M revenue | Large enterprises >EUR 50M revenue |
Part-time CFO or Fractional CFO: is it the same thing?
Yes — both terms refer to the same concept: a senior finance professional who splits their time across multiple companies instead of being a full-time employee at one organization. "Fractional CFO" is the generic term, while "part-time CFO" emphasizes the engagement model (a few days per month or week on a recurring basis).
You may also encounter terms like fractional finance leader, part-time financial director, shared CFO, or interim CFO — these are all synonyms for the same service. The key difference lies in duration: a part-time CFO typically commits for 12-36 months, while a Fractional CFO can handle one-off projects (fundraising, M&A, transition).
At Iter Advisors, we offer both models: recurring part-time support to structure finance in a growing SME, and short-term intensive projects for strategic operations. The boundary is intentionally flexible — your needs determine the format, not the other way around.
The 5 key advantages of a Fractional CFO
Hiring a Fractional CFO offers many advantages for growing companies:
Significant cost reduction (up to -60%)
The cost of a Fractional CFO is significantly lower than an in-house CFO. You only pay for time actually spent on your company, without social charges or benefits. A Fractional CFO at 3 days/month costs around EUR 3,000, compared to EUR 8,000-17,000/month for a salaried CFO (including charges).
Flexibility and adaptability
The Fractional CFO adapts to your real needs. Whether you need a one-off intervention for fundraising or regular part-time support, the scope is adjustable. No long-term commitment, no notice period.
Multi-sector expertise and external perspective
Our Fractional CFOs work across many companies and sectors (SaaS, e-commerce, manufacturing, services). This diversity gives them a valuable external perspective and the ability to quickly identify levers for improving your financial performance.
Access to a network of experts
By working with Iter Advisors, you gain access to a vast network of partners: investors (VCs, business angels), bankers, business lawyers, accountants and specialized consultants. This network is a major asset for accelerating your development.
Operational from day one
Unlike an internal hire that requires 3-6 months of onboarding, a Fractional CFO is operational immediately. Our CFOs know the tools, processes and challenges of growing companies. They deliver tangible results from the first weeks.
Fractional CFO: for whom and at what stage?
The **Fractional CFO** is not just for large enterprises. Four typical profiles derive maximum value from this solution.
Early-stage startups (pre-seed to seed)
At this stage, you can't afford a salaried CFO (EUR 100,000-150,000+ per year) but you need a senior financial voice for your first fundraises and runway tracking. The **Essential Fractional CFO package** (2-3 days/month) covers your needs for EUR 2,000-3,000 excl. VAT/month. For more regular support, the [part-time CFO model](/en/fractional-cfo/shared-time) becomes highly relevant.
Series A/B scale-ups
You now manage complex treasury, quarterly investor reporting, and perhaps prepare your next round. The **Growth Fractional CFO package** (4-6 days/month) handles finance function structuring before you hire a full-time CFO. This is typically the ideal moment for a [part-time CFO](/en/fractional-cfo/shared-time) — the same senior profile, present 1 day per week over time.
Growing SMEs or companies in transition
You're an SME with 10-80 employees; your accountant has sufficed so far, but growth or a sale transaction now requires real **financial leadership**. The **Fractional CFO** provides strategic oversight without the cost of full-time hiring, with the flexibility to adjust scope month-to-month.
Enterprises in transformation
For 3-12 months (CFO departure, restructuring, post-acquisition integration), the [transition CFO](/en/fractional-cfo/transition) steps in within 5 days with a senior 20+ year profile. This is an intensive one-off engagement, distinct from recurring part-time support.
Sector-wise, our **Fractional CFOs** specialize in SaaS, Deep-Tech, e-Commerce, Manufacturing, and Services — sectors where we've supported 85+ companies and facilitated EUR 100M+ in fundraising. **Additional services:** Beyond Fractional CFO support, we also offer guidance in other critical functions: **outsourced HR** for scaling team structuring, interim management for urgent situations, and fundraising support.
Key missions of a Fractional CFO
The Fractional CFO covers a wide range of financial and strategic missions:
Financial management and reporting: dashboards, financial KPI monitoring, monthly reporting to executives and investors, budget forecasting.
Cash management: 12-month rolling cash flow forecasting, working capital optimization, banking relationship management, short-term financing.
Fundraising: investment dossier preparation (financial pitch deck, data room), financial modeling, negotiation support with investors, financial due diligence.
Process structuring: analytical accounting, financial process automation, selection and deployment of appropriate tools (ERP, BI, treasury).
Strategic support: pricing advice, profitability analysis by product/client, strategic decision-making support, M&A preparation.
How much does a Fractional CFO cost? 2026 pricing guide
The average daily rate for a Fractional CFO ranges from EUR 750 to 1,250 excl. VAT, depending on seniority and mission complexity. At Iter Advisors, we offer three packages tailored to SME and startup needs.
| Plan | Volume | Price | For whom |
|---|---|---|---|
| Essential | 2 to 3 days/month | From EUR 2,000 excl. VAT/month | Early-stage startups (pre-seed to seed) |
| Growth | 4 to 6 days/month | From EUR 4,000 excl. VAT/month | SMEs structuring or Series A scale-ups |
| Premium | 8+ days/month | From EUR 7,000 excl. VAT/month | Scale-ups, fundraising, M&A |
By comparison, a **full-time salaried CFO** costs EUR 100,000-213,000 per year all-inclusive, or 4-8 times more than a Fractional CFO depending on the package. For recurring long-term support, explore our [part-time CFO service](/en/fractional-cfo/shared-time). For urgent situations (CFO departure, restructuring), see our [transition CFO service](/en/fractional-cfo/transition).
We've partnered with Iter Advisors for 5 years, and this relationship has been a genuine strategic asset. Far beyond a simple Fractional CFO, their teams guided us on structural matters: ERP migration, finance function organization, complex legal and tax issues, non-dilutive financing. I especially appreciate their ability to challenge us and clarify our strategic decisions.
Fractional CFO or accountant: what's the difference?
The accountant and Fractional CFO are complementary — not competitors. The accountant ensures legal and tax compliance (balance sheet, tax returns, VAT filings, payroll). They look backward and guarantee account accuracy for tax authorities.
The Fractional CFO drives financial performance daily: cash flow forecasting, management reporting, margin analysis, fundraising preparation, banking negotiations, tool selection, and strategic guidance. They anticipate the future and help make operational decisions.
In practice: your accountant produces the general ledger, the Fractional CFO transforms it into a dashboard for your executive team. One closes the annual snapshot, the other films the current quarter and projects the next 12 months. A well-structured SME typically has both: an accountant for compliance, a Fractional CFO for management.
When should you hire a Fractional CFO?
Several situations justify hiring a Fractional CFO. Here are the most common triggers:
You are preparing a fundraise: you need a solid business plan, rigorous financial modeling and a credible financial spokesperson for investors.
Your growth is accelerating: revenue exceeds EUR 500K and DIY financial management is no longer sufficient. You need structured reporting, optimized cash flow and profitability monitoring.
You are hiring rapidly: payroll costs are surging and you need to financially plan each hire to avoid cash flow tensions.
Your in-house CFO has left: rather than rushing a recruitment (6-month process), a Fractional CFO ensures immediate continuity.
You are preparing an M&A transaction: sale, acquisition or merger, you need an expert for due diligence, valuation and negotiations.
You are expanding internationally: setting up in Spain, France or a new market, you need a CFO who understands both tax and regulatory environments.
Which Fractional CFO profile for which needs?
The Fractional CFO is not a one-size-fits-all profile. Depending on your stage and challenges, the ideal profile varies:
Operational CFO: for companies that need to structure their accounting, implement an ERP and improve reporting reliability. Typical profile: 8-12 years of experience, expertise in processes and tools.
Strategic CFO: for growth-stage companies that need profitability management, fundraising preparation and COMEX support. Typical profile: 15+ years of experience, previous finance leadership in scale-ups or mid-caps.
Transition CFO: for urgent situations (CFO departure, cash crisis, restructuring). Intensive intervention over 3-6 months to stabilize the situation. Typical profile: 20+ years of experience, comfortable in complex environments.
At Iter Advisors, all our CFOs have a minimum of 10 years of finance leadership experience and are selected for their ability to integrate quickly into demanding environments.
The modern Fractional CFO's toolkit
A high-performing Fractional CFO relies on a modern tool stack to automate repetitive tasks and focus on analysis and strategy:
Accounting and invoicing: Pennylane, Sage, QuickBooks, Xero. These tools enable real-time accounting and seamless collaboration with the accountant.
Cash flow and forecasting: Agicap, Fygr, Cashflow. For daily cash monitoring and 12-month rolling forecasts.
Reporting and BI: Power BI, Looker, Metabase, advanced Google Sheets. For automated dashboards and profitability analysis.
ERP and management: Odoo, NetSuite, SAP Business One. For companies that need to integrate finance with operations (purchasing, inventory, production).
At Iter Advisors, we work with over 30 technology partners and help our clients choose and deploy the tools best suited to their size and sector.
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An outsourced CFO near you
Iter Advisors operates from its offices in Barcelona, Paris and Toulouse. Discover our local teams and the specificities of each market.
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Discover our clients' testimonialsWhy choose Iter Advisors as your Fractional CFO firm?
Iter Advisors stands out for the quality of its teams and the depth of its support. Our 15 employees, all experts in the finance function, work with rigor and commitment for each client.
Our presence in Barcelona, Paris and Toulouse allows us to support international companies and understand the specificities of each market. We work with over 30 technology partners to guarantee modern and efficient financial management.
Client satisfaction is our priority: we have a 5/5 rating on Trustfolio with 31 verified reviews. This excellence translates into lasting relationships and tangible results for the companies we support.
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Sources & references
- CFO Compensation Study — pay practices in finance leadership — DFCG (French CFO Association), 2025.
- French SMEs — demographics and characteristics — INSEE — French National Institute for Statistics and Economic Studies, 2024.
- SME and startup financing — public-sector instruments — Bpifrance — French Public Investment Bank, 2025.
- France Digitale Barometer — startup funding and structuring — France Digitale, 2025.