Which legal structure should a construction company choose in France in 2026?

Up to date as of 14 May 2026. In the French construction sector, the choice of legal structure is not a purely fiscal exercise. It determines your ability to subscribe decennial liability insurance, obtain bank guarantees for your contracts, bring in a co-contractor, or pass on the business in ten years. A plumber who registers as a micro-entrepreneur for convenience may find themselves blocked on their first major renovation project, lacking the financial substance or credibility that the contracting authority requires. At Cabinet Hayot Expertise, based in Paris, we advise craftsmen, general contractors, specialist subcontractors and structured construction groups. Below is our full analysis of the structures available in 2026, as we conduct it for every creation or restructuring engagement.

Quick summary: for most construction craftsmen starting out, the EI (sole proprietorship, actual-cost BIC) with automatic asset protection is the recommended starting point. From €50,000–€60,000 in net profit, the EURL or SARL under corporate tax becomes relevant. The SAS is necessary for growing or multi-shareholder structures. A holding structure is worth considering above €80,000–€100,000 in undistributed post-tax profit. The SCI protects real estate assets across all these configurations.

Decennial liability insurance: the prerequisite for any construction activity#

Article 1792 of the French Civil Code establishes strict liability for ten years from project completion for any defect compromising the structural solidity of the building or rendering it unfit for its intended purpose. Article L241-1 of the Insurance Code obliges every builder, before opening any site, to hold decennial liability insurance. This obligation applies regardless of legal form — micro-entrepreneurs included. In practice, the annual premium varies by trade and turnover: typically 3 to 8% of revenue for masonry or timber-frame work, sometimes less for interior painting or non-structural finishes. These rates are indicative; your broker will quote precisely based on your actual activity.

Two points require vigilance. First, the decennial premium is calculated on declared revenue. A craftsman who under-declares turnover to reduce the premium risks partial coverage exclusion in the event of a claim. Second, some insurers refuse to cover activities under legal forms they consider fragile — notably micro-entrepreneurs beyond a certain contract size. The legal structure therefore directly influences insurance coverage.

Subcontracting financial guarantee: Act of 31 December 1975#

Act n° 75-1334 of 31 December 1975 requires the main contractor to guarantee payment to accepted and approved subcontractors. This guarantee can take the form of a bank guarantee or a payment delegation. For a subcontractor, verifying the existence of this guarantee before starting work is not a formality: it is the only legal recourse if the main contractor defaults. The main contractor's legal structure determines its ability to obtain and maintain these guarantees — a point that banks examine in every credit file.

Professional qualifications and CMA registration#

Building craftsmen — joiners, plumbers, electricians, masons, roofers — must register in the Trade Register held by the Chambre des Métiers et de l'Artisanat (CMA), under decree n° 98-246 of 2 April 1998. This registration is a legal prerequisite for carrying out the activity. It is compatible with all legal forms — micro-entrepreneur, sole proprietor, EURL, SARL, SAS — but the qualified individual must be identified. In a SARL or SAS where the manager is not a qualified craftsman, a qualified employee or partner must be designated.

Qualibat, FFB and CAPEB qualifications are distinct from CMA registration but layer on top of it for private or public contracts that require them. A public tender may require the RGE (Recognised Environmental Guarantor) qualification for energy renovation, or a Qualibat qualification for structural work. Verifying the compatibility between the chosen legal form and the maintenance of qualifications is a control point that Cabinet Hayot Expertise systematically carries out during every restructuring engagement.

Impact of structure on bank guarantees and subscription capacity#

Public contracts and major private contracts often require advance guarantees, performance bonds or retention guarantees. The issuing bank assesses the company's financial substance: equity, historical results, indebtedness. A sole proprietorship or micro-enterprise does not offer the same balance-sheet legibility as a SARL with constituted share capital and three years of certified accounts. A craftsman targeting contracts above €300,000 to €500,000 should factor this constraint into the initial choice of structure.

*Since the EI reform under Ordinance n° 2021-1189 of 15 September 2021 (in force from 15 May 2022), personal assets are automatically protected without any formality. The EIRL has no longer been accessible to new registrations since 15 February 2022 — existing EIRLs may continue until they are voluntarily converted or dissolved.

2026 micro-regime ceilings and construction activity#

The micro-entrepreneur regime is capped at €83,600 in revenue for artisan service activities and at €203,100 for goods-sale activities in 2026. These thresholds were revalued on 1 January 2026 for the 2026-2028 period. Construction work often straddles the trade and service boundary depending on its nature. A plumber billing mainly for supply and fitting may fall under the trade-and-supply ceiling at €203,100; an electrician whose billing is primarily labour may fall under the service ceiling at €83,600. In practice, both thresholds often coexist in a single construction file: prior analysis with your accountant is essential.

Operational restrictions in construction#

The construction micro-enterprise faces four major practical limitations. First, the impossibility of deducting actual expenses — materials, tools, vehicle: the flat-rate allowance of 50% (works) or 34% (services) does not reflect the real costs of a craftsman who purchases materials. Second, the absence of collected VAT when revenue stays below the franchise threshold (€36,800 for services and approximately €91,900 for goods sales in 2026, to be confirmed at BOFiP), which provides a pricing advantage on consumer contracts but creates a B2B asymmetry: the business client cannot recover any VAT, which can be perceived as a commercial disadvantage in professional markets. Third, the limited bank guarantees accessible. Fourth, some decennial insurers may refuse or surcharge coverage on major contracts for a micro-entrepreneur.

The under-estimated risk: staying as a micro-enterprise too long#

In the construction files that Cabinet Hayot Expertise handles, the most frequently inappropriate status is the micro-enterprise maintained beyond €40,000 to €50,000 in annual revenue. The flat-rate allowance does not cover the actual costs of a craftsman who purchases 30 to 40% of turnover in materials. The comparative simulation — micro income tax versus actual-cost income tax versus EURL under corporate tax — almost systematically reveals a net advantage to switching at this threshold.

Automatic separation of assets: what has changed#

Ordinance n° 2021-1189 of 15 September 2021, in force from 15 May 2022, transformed the individual enterprise. The law now automatically distinguishes professional assets (property, rights and obligations useful to the activity) from personal assets. Professional creditors can only seize professional assets; personal creditors can only seize personal assets, with limited statutory exceptions (fraud, voluntary commingling). This protection is a matter of public policy: it requires no formality, no notarial act, no minimum capital.

Concrete advantages for a solo construction craftsman#

For a construction craftsman, the 2022 EI combines simple CMA registration, personal asset protection and income tax treatment under the actual-cost BIC regime. All actual expenses are fully deductible — materials, vehicle, tools, decennial insurance, training. The SSI self-employed social regime generates contributions approximately 20 to 25% lower than those of an employee-equivalent, representing €5,000 to €12,000 in potential annual savings on earnings of €50,000 to €80,000. The main drawback remains income tax on the full profit, with no ability to manage the tax burden through the combination of remuneration and dividends.

When to move from EI to EURL or SARL#

As soon as the EI's net profit exceeds €50,000 to €60,000 annually, the corporate tax question deserves consideration. At the reduced corporate tax rate of 15% on the first €42,500 of profit (2025 threshold, to be confirmed at BOFiP for 2026), then 25% above, versus a marginal income tax rate reaching 30 to 41%, the tax arbitration can become material. Converting an EI into an EURL is possible without a taxable event in certain cases, but each situation must be reviewed with the accountant before any contribution or conversion step.

Why EURL before SARL#

The EURL is the single-shareholder version of the SARL. It offers limited liability to contributions, the option of corporate or income tax for the first five years, and a more robust legal framework than the EI for obtaining bank guarantees. The sole member-manager remains self-employed under the SSI, preserving the social contribution advantage of the EI.

The EURL is a natural step for the craftsman crossing €60,000 to €80,000 in revenue, starting to work on larger contracts, or wishing to build up equity without immediately distributing it. It is also the logical host structure if the entrepreneur plans to bring in a partner within two to three years — converting an EURL to a SARL is straightforward and requires no dissolution.

EURL construction points of vigilance#

The legal minimum capital of €1 is valid but insufficient to reassure a contracting authority or a bank. Cabinet Hayot Expertise recommends capital of €3,000 to €10,000 depending on the intended scale, made up of an initial cash or equipment contribution. The articles of association must anticipate transfer clauses, related-party transactions and the conditions for bringing in a future partner.

Advantages for a succession-oriented construction SME#

The SARL remains the reference vehicle for family-run construction SMEs. It allows the spouse and children to be brought in as shareholders, the use of the five-year income tax option (Article 239 bis AA of the French Tax Code), and the preparation of a gradual succession via a share transfer or a Dutreil pact. In construction, business succession is a critical issue: a 55-year-old craftsman who has built a SARL with a qualified employed manager can plan a transition over five to ten years without operational disruption.

Collaborating-spouse status: PACTE Act 2019 and Independents Act 2022#

The PACTE Act of 22 May 2019 made it compulsory for any spouse working in the business to choose one of three statuses: collaborating spouse, employed spouse or shareholder spouse. Act n° 2022-172 of 14 February 2022 tightened this obligation by limiting collaborating-spouse status to companies with fewer than 5 employees and capping it at five years maximum. After that, the spouse must opt for employee or shareholder status. For a construction craftsman whose spouse manages estimating and invoicing, this five-year limit makes early planning essential — failing to update the status exposes the company to an irregularity that an URSSAF inspection can identify.

Statutory flexibility and bringing in partners or investors#

The SAS offers total statutory freedom to organise voting rights, pre-emption clauses, earn-out mechanisms and preferred rights. For a construction company considering bringing in an experienced site manager as partner, integrating a sector-focused investment fund, or creating a joint venture with other companies, the SAS is often the only form flexible enough. The president's social regime — employee-equivalent, affiliated to the general social security regime — reduces the self-employed contribution advantage but simplifies social protection and strengthens credibility with banks and insurers.

SAS within a construction holding structure#

For a construction entrepreneur exceeding €500,000 in revenue and generating significant profits, creating an animating holding above the operating entity becomes relevant. The holding (SAS or SARL) holds shares in the operating SAS and can benefit from the parent-subsidiary regime — 95% exemption of dividends received under Article 216 of the French Tax Code — or the tax consolidation regime once it holds 95% of the subsidiary's capital. It can also hold real estate assets through a SCI, separating job-site risk from built-up assets. This structure is described in detail in our article on animating holding companies: conditions and risks 2026.

SCI holding combined with an operating SARL or SAS#

Construction asset engineering often separates real estate assets — workshop, depot, offices — held in a SCI from the operating entity in a SARL or SAS. The SCI leases premises to the operating company, creating a rental flow deductible from operating profits and building up an asset protected from operational risk. In the event of the operating company's insolvency, the premises remain in the SCI. On succession, SCI shares can be transferred or gifted independently. The main risk is reclassification if the SCI is not genuinely active — accounts maintained, general meetings held, rents set at market rates. At Cabinet Hayot Expertise, we systematically monitor the consistency between lease agreements and Paris market rents to prevent this risk.

The SCOP is a SARL or SA in which employees are majority shareholders and profits are shared between non-distributable reserves, profit-sharing and optional dividends. In construction, SCOPs are used by craftsmen's collectives pooling purchases, equipment and insurance while maintaining job-site autonomy. The regulatory framework derives from Act n° 78-763 of 19 July 1978 and is overseen by the CG SCOP.

The advantages are real: access to specific cooperative financing via SOCODEN, enhanced team cohesion through employee shareholding, possible partial exemption from the local business contribution on the profit-sharing element. The limitations are equally real: governance complexity, difficulty selling to an external buyer (employees must remain majority shareholders), and the need for a minimum number of committed employees. The SCOP model is only relevant for already constituted collectives with a clear joint project and a shared governance culture — rarely suited to an individual new creation.

When income tax remains relevant#

The income tax regime remains relevant when profit is low (start-up phase, cyclical activity), when the entrepreneur has personal deductible charges that reduce global taxable income, or when the company is new and in an investment phase. The income tax option for a SARL or EURL is limited to the first five financial years under Article 239 bis B of the French Tax Code, and the detailed conditions must be verified for each specific file.

When corporate tax becomes the priority arbitration#

As soon as net profit exceeds €40,000 to €50,000, the reduced corporate tax rate of 15% on the first €42,500 of profit (2025 threshold, to be confirmed at BOFiP for 2026) generates a material saving compared to the marginal income tax rate. Corporate tax allows available income to be managed through the combination of deductible director's remuneration and dividends subject to the flat-rate tax of 30%. For full details of the construction tax regime, see our dedicated article BTP tax regime 2026.

Three recurring control points in the construction sector deserve anticipation. First, the classification of works as fixed assets versus expenses: replacing an industrial boiler in a workshop may be a deductible expense or a depreciable asset depending on fiscal doctrine and whether the work constitutes replacement or improvement. Second, undeclared or unguaranteed subcontracting: in a tax or URSSAF audit, amounts paid to subcontractors without the legal guarantee required under Act 75-1334 can be reclassified as undeclared work. Third, the treatment of advance payments: the authorities check that deferred income and work in progress are correctly allocated to the relevant financial years, particularly in SALs and SASs under corporate tax.

In the construction files we advise in Paris, two configurations recur. The first is the micro-enterprise maintained too long: the craftsman exceeds €50,000 in revenue but stays under the micro regime through inertia. The comparative simulation almost systematically reveals a net advantage to switching at this threshold. The second configuration is the SARL created without asset planning: a craftsman who set up their SARL ten years ago without a SCI or holding company finds themselves with an operating entity loaded with real estate assets, complicating succession, restricting access to the Dutreil pact on operating shares, and eliminating the separation of risks.

Our recommendation: the choice of structure in construction should simultaneously integrate four dimensions — decennial insurance and guarantees, director's social regime, target tax regime over three years, and exit scenario (sale, succession, partnership). A craftsman who anticipates these four dimensions from inception avoids costly restructurings at the €500,000 revenue stage. For an analysis tailored to your activity and personal situation, the Cabinet Hayot Expertise team in Paris is available for an initial consultation.

• What is your projected revenue at 12 and 36 months?
• Do you have partners or a spouse involved in the activity?
• Do your contracts require Qualibat or RGE qualifications?
• Do you have real estate assets (workshop, depot, offices) to protect?
• Are you targeting public contracts or contracting authorities that require guarantees?
• Do you have a succession plan within the next ten years?
• Does your decennial insurer have requirements regarding legal form?
• Have you assessed the consequences for your social protection — retirement, disability, sick leave?