If you ask what a fractional CFO costs, the market will give you ranges. What those ranges mean and why they are hard to compare is what this article covers: the three pricing models, the five factors behind them, and Structure First's own packages as a concrete reference point.

What does a fractional CFO cost? The pricing models

Three pricing models have established themselves in Germany. Which one fits depends on whether you need ongoing strategic guidance or project-based support. A full overview of the role, responsibilities and how it differs from related models sits in What is a fractional CFO?.

1. Retainer model (most common)

On a retainer you pay a fixed monthly amount for a defined scope of work. The actual workload varies. Higher during onboarding, steady in the ongoing phase, and intense again around specific events such as fundraising or M&A. The retainer model gives you planning certainty and gives the CFO the freedom to focus on your priorities instead of tracking hours.

Growth stageTypical retainerScope
Early stage (Pre-Seed to Seed)2,500–4,000 EUR/monthKPI dashboards, investor reporting, fundraising preparation, burn rate optimisation
Growth stage (Series A/B)5,000–9,000 EUR/monthFull CFO agenda, three-statement model, ERP/BI selection, investor relations, M&A advisory
Late stage (Series B+)9,000–15,000 EUR/monthEquity story, corporate development, governance excellence, exit preparation

2. Day rate model

Some fractional CFOs work on a day rate basis, typically between 1,200 and 2,500 EUR per day. The DDIM 2026 market study reports an average of 1,900 EUR per day for CFO-level mandates, within a range of 1,600 to 2,200 EUR. This model fits clearly scoped projects, for example building a financial model or accompanying a single funding round. For ongoing strategic guidance it works less well, because it shifts focus from outcomes to time tracking.

3. Retainer plus equity (VSOP)

For capital-relevant engagements such as fundraising or exit preparation, experienced fractional CFOs combine a retainer with equity participation (VSOP or similar). The structure creates maximum alignment of interests. The CFO benefits only when the company grows successfully. For founders that means an advisor who does not just advise but thinks and acts as a co-entrepreneur.

Fractional CFO vs. full-time CFO vs. interim CFO: the cost comparison

Cost figures alone say little without comparing what you get for them. The three models solve different problems and cost accordingly:

Fractional CFOFull-time CFOInterim CFO
Annual cost30,000–180,000 EUR150,000–400,000 EUR (incl. on-costs and bonus)168,000–540,000 EUR (at 120–180 days)
EngagementOngoing, in parallel with several mandatesExclusive, full-timeFull-time, time-limited
Typical duration12–24+ monthsOpen-ended3–12 months
Equity (VSOP etc.)On premium engagements with alignment of interestsCommon, often 0.5–2% VSOPUncommon
Core functionStrategic build-upOperational and strategic leadershipBridging a vacancy
Break-even pointCost-effective from day oneFrom around 80–100 employeesShort-term necessity

The most common question in initial conversations is not "What does a fractional CFO cost?", but "What does it cost us not to have one?" Missing finance structures cost time and valuation points in the next funding round. Professional reporting that is in place three months earlier can be the difference between a successful round and one that stalls.

Philipp Siegert

Example: Structure First retainer model

To make the ranges more concrete, here are the actual packages from Structure First, my own fractional CFO offering:

PackageTarget groupRetainer (excl. VAT)Focus areas
CFO FoundationEarly stage (Pre-Seed to Seed)From 2,900 EUR/monthKPI dashboards, investor reporting, scalable finance processes, fundraising preparation
CFO Scale-UpGrowth stage (Series A/B)From 6,900 EUR/monthFull CFO agenda, three-statement model, ERP/BI selection, investor relations, M&A advisory
CFO Market LeaderLate stage (Series B+)From 12,900 EUR/monthEquity story, corporate development, governance excellence, exit preparation (IPO/trade sale)

Details on all packages and the scale-up coaching offering are on the Services & Packages page.

What actually drives the cost

Five factors determine where a specific engagement falls within the range:

  1. 1Growth stage and complexity: A pre-seed startup with five people needs different structures than a Series B company with eighty employees and three legal entities. Complexity drives effort.
  2. 2Scope of work: Just fundraising preparation? Or the full CFO agenda including controlling, investor relations and M&A advisory? The broader the mandate, the higher the retainer.
  3. 3Seniority and track record: A fractional CFO with exit experience and an investment banking background costs more than an experienced controller positioning as a fractional CFO. The question is which level your investors and your growth stage actually require.
  4. 4Time intensity: Most retainers cover two to four days of strategic work per month. In phases of higher demand (fundraising, due diligence, ERP rollout), intensity temporarily increases.
  5. 5Industry and regulatory requirements: Companies in regulated sectors (FinTech, HealthTech, energy) carry additional compliance demands that increase effort.

When does a fractional CFO pay off?

A fractional CFO does not pay off through hourly cost calculations but through the leverage that professional finance leadership has on company decisions:

  • Fundraising: A professionally prepared data room, a defensible financial model and structured investor reporting can shorten the time to closing by weeks and positively influence valuation.
  • Cash management: Professional runway planning and burn rate optimisation give founders the certainty to make strategic decisions on a data basis instead of by gut feel.
  • System selection: The right ERP and BI decision saves six-figure amounts over three to five years compared to a wrong choice that has to be migrated later.
  • Investor confidence: VCs and PE expect professional finance structures. Companies that lack them lose time and valuation points in due diligence.

What to look for when choosing

Price alone is not a quality indicator. These questions help assess:

  1. 1Does the CFO have relevant experience in your growth stage? A former corporate CFO is not automatically the right sparring partner for a Series A startup. Ask for comparable mandates.
  2. 2How is the compensation structured? A retainer creates planning certainty. Pure day-rate models create incentives for hour maximisation rather than outcome focus. Look for transparency.
  3. 3What remains when the engagement ends? A good fractional CFO builds structures that work without him. Financial models, dashboards, processes and reporting stay with your company. That is the actual value.

Warning signs when evaluating providers

  • No concrete onboarding plan. What happens in the first 30 days? Anyone who cannot answer that is improvising.
  • The largest package is recommended straight away. Serious providers start with a situation assessment and recommend the right model after that.
  • Strategic language without operational depth. Can the person actually build a financial model, set up a data room, lead covenant negotiations? Ask specifically.
  • No references from a comparable stage. Corporate CFO experience is not the same as startup experience. Ask for mandates in similar situations.
  • No clear offboarding. What stays when the engagement ends? Financial models, dashboards and processes should remain with your company, not with the advisor.

FAQ

What does a fractional CFO cost for a startup in Germany?+
For a VC-backed startup in Germany, a fractional CFO costs between 2,500 and 15,000 EUR per month on a retainer basis. The range reflects growth stage: Pre-Seed to Seed sits at 2,500 to 4,000 EUR for KPI dashboards, investor reporting and fundraising preparation. Series A/B lands at 5,000 to 9,000 EUR for the full CFO agenda. Series B+ with exit preparation can reach 9,000 to 15,000 EUR. What matters is not the monthly price but the structural progress built before the next round.
What is the difference between a fractional CFO and an external CFO?+
The terms are often used interchangeably but emphasise different things. 'Fractional CFO' describes the compensation model: a part-time engagement on a retainer, typically two to four days of strategic work per month. 'External CFO' is the umbrella term for any non-internal finance leadership, including fractional CFO, interim CFO and CFO-as-a-service. In the German market both terms mean the same in practice: strategic C-level finance leadership without the fixed cost of a permanent hire.
What does a fractional CFO cost per month?+
In Germany, monthly retainers typically range from 2,500 to 15,000 EUR net, depending on growth stage and scope of work. Early-stage startups pay at the lower end of the range for foundational finance structures and fundraising preparation. Late-stage companies with exit preparation or complex governance requirements pay at the upper end.
Is a fractional CFO cheaper than a full-time CFO?+
Yes, considerably. An experienced full-time CFO in Germany costs 150,000 to 250,000 EUR base salary plus on-costs, bonus and frequently equity participation (VSOP). The total cost lands at 200,000 to 400,000 EUR per year. A fractional CFO on retainer costs 30,000 to 180,000 EUR per year at comparable strategic depth, without the fixed cost structure of a C-level permanent hire.
At what company size does a fractional CFO make sense?+
Typically from the moment external capital comes into play, whether VC, angel or bank financing. In practice that often means from twenty employees onwards or the first structured funding round. Before that, a good tax advisor and clean bookkeeping usually suffice. After that, you need someone who builds finance strategy, reporting and investor relations to a level your capital providers expect.
Can I book a fractional CFO by the hour?+
Some providers work on an hourly basis, but the model has drawbacks. It creates incentives for hour maximisation, makes strategic continuity harder, and makes effort hard to plan. Most experienced fractional CFOs work on a retainer basis because strategic finance leadership requires continuity, not isolated touchpoints.
What is the difference between a fractional CFO and an external controller?+
An external controller produces reports, maintains the numbers and oversees ongoing bookkeeping. That is operational finance work. A fractional CFO works at the strategic level: finance strategy, fundraising, board reporting, M&A preparation, system architecture. Both functions are necessary but they do not replace each other. Many companies have an external controller and a fractional CFO in parallel.