How much does a fractional CTO cost?

How much does a fractional CTO cost in France in 2026?

There is no universal rate, but there are useful benchmarks for budgeting an engagement. Current contributions visible on Free-Work place the CTO role around €815 to €829 excluding VAT per day on average depending on intermediation, with very senior Île-de-France profiles above €900 excluding VAT per day.

The day rate is only the first variable. Monthly cost mainly depends on cadence, the number of decisions to make, the authority granted, and the scope to cover. These amounts describe the market, not Koragence’s rate card.

What monthly budget should you plan by cadence?

To convert a day-rate benchmark into a monthly envelope, you can use the illustrative assumption of €800 to €900 excluding VAT per day. This helps distinguish light governance from genuinely operational involvement.

The calculation remains deliberately transparent: number of days × €800 to €900 excluding VAT. It is neither a Koragence quote nor a universal cadence recommendation.

At 2 days per month, the format can cover a technical steering committee, trade-offs, roadmap review, and occasional vendor follow-up, but it is not enough for daily management. At 4 days per month, continuity becomes more regular: team check-ins, vendor leadership, hiring, and an active roadmap. At 8 days per month, the CTO can support a structuring phase, several vendors, or hiring. Beyond that, dense involvement over a limited period may move closer to an interim CTO, a transition, or a replacement.

Day rate or monthly retainer: how do you compare two offers?

A day rate compares the price of one day, but two engagements at the same rate can have very different value. A monthly retainer is clearer when cadence, meetings, preparation time, asynchronous availability, deliverables, documentation, follow-up, and hiring involvement are defined.

The right comparison is price + scope + responsibility + availability + expected outcome. A proposal that only says “fractional CTO, 4 days per month” does not show whether it includes architecture, hiring, production follow-up, vendor management, or handover.

What does one day per week cost?

With a market benchmark of €800 to €900 excluding VAT per day, four monthly days represent approximately €3,200 to €3,600 excluding VAT per month. This calculation is illustrative and does not automatically correspond to Koragence’s rate.

This cadence fits a company that needs regular technical leadership without immediately creating a daily role: decision reviews, team support, vendor trade-offs, and short-roadmap follow-up.

What budget should you plan for two fractional CTO days per month?

At €800 to €900 excluding VAT per day, two days represent approximately €1,600 to €1,800 excluding VAT per month as a benchmark. This is an illustrative multiplication, not a published Koragence rate.

Two days may suit an already stable organization that mainly needs trade-offs, roadmap review, light governance, or occasional senior input. It does not fit a team in crisis or a daily management need.

Fractional CTO vs full-time CTO cost

Gross salary benchmarks provide context, but they are not a full employer-cost calculation. The 2026 BDM guide places a confirmed CTO around €75,000 gross per year and senior profiles up to approximately €150,000 gross per year. A Paris CTO role published by Apec in September 2026 shows €100,000 to €130,000 gross per year as one current example, not a national average.

Employer cost then includes contributions and associated costs that depend on the contract and organization. Applying a generic multiplier without knowing status, benefits, hiring, management, and work environment would be misleading.

Fractional leadership is relevant when the need is partial, non-permanent, urgent, or part of a structuring phase, with immediate seniority required but no case for a daily position. A full-time hire is more coherent when the need is daily, central, and durable, with permanent management and a larger team.

The decision should compare useful presence, start time, decision authority, expected continuity, and the outcome, rather than only comparing a day rate with a salary.

Fractional CTO vs interim CTO cost

A fractional CTO works on a recurring but partial cadence, for a few days per month or week. An interim CTO usually receives a limited mandate, denser availability, and immediate responsibility for a transition, crisis, replacement, or handover.

Even with a comparable day rate, the monthly budget can be significantly higher simply because the number of days is higher. See the interim CTO page to distinguish the two situations.

What makes two fractional CTO rates so different?

What should be included in a fractional CTO proposal?

The proposal should specify the days, mandate, meetings, preparation, roadmap, architecture review, team follow-up, vendor follow-up, hiring, documentation, reporting, availability, travel, notice period, and handover.

A proposal that only says “fractional CTO support, 4 days per month” remains difficult to compare. You also need to know which decisions are expected, which deliverables will be produced, what happens between days, and what counts as complementary work.

Is engineering execution included in the fractional CTO rate?

Not automatically. A CTO may review, challenge, prototype occasionally, or contribute technically depending on their profile, but the primary service remains technical leadership, trade-offs, and governance. Significant frontend, backend, migration, DevOps, or QA work should be distinguished from the CTO role.

When the need is mainly coordinated execution capacity, also compare an outsourced tech team rather than asking a technical leadership mandate to carry production work that was not planned.

How do you get an accurate budget for your need?

Four pieces of information are often enough to frame a first format: technical team size, current vendors, the main blocked decisions, and the expected level of presence. After scoping, the proposal should state cadence, responsibilities, and what is included.

The budget then becomes the consequence of a clear scope, rather than an isolated figure chosen before understanding the situation.

Sources and methodology

Day-rate benchmarks come from Free-Work, Technical Director / CTO role, checked on September 19, 2026. They are presented as market contributions, not Koragence pricing.

The salary comparison uses the 2026 BDM guide and a Paris Apec job-posting example. These are gross salary figures or one job-posting example, not a universal employer-cost benchmark.