France IS vs IR for Company Creation: Tax Optimization

When creating a company in France, one of the most consequential early decisions is the regime of profit taxation: Impôt sur les Sociétés (IS — Corporate Income Tax) or Impôt sur le Revenu (IR — Personal Income Tax via transparency). The choice affects not only tax cost but also dividend strategy, social charges, family transfer planning, and the future ability to onboard investors. This deep-dive sets out the framework under the Code général des impôts (CGI) in force for 2026.

1. The Default Mapping by Legal Form

In France, the legal form a founder chooses largely determines the default tax regime, though many forms permit an option:

Statutory basis: CGI articles 8, 206 to 218 bis, 239 for the option mechanics.

Primary source: https://www.impots.gouv.fr/professionnel/regime-fiscal-de-la-societe

2. IS — Impôt sur les Sociétés

2.1 The Rates for 2026

Under CGI article 219, the standard IS rates for fiscal years opening in 2026:

• 15% reduced rate on profits up to €42,500 (small companies, with conditions)
• 25% standard rate on all profits above €42,500

To qualify for the 15% reduced rate, a company must:

• Have turnover (CA HT) less than €10 million
• Have fully paid-up capital
• Be at least 75% held by individuals (or by another company itself meeting the conditions)

2.2 How It Works

• Company computes profit on commercial accounting principles, adjusted for fiscal differences (provisions, depreciation, non-deductible expenses)
• Files annual liasse fiscale (form 2065) within 3 months of fiscal year-end
• Pays 4 acomptes in March, June, September, December
• Final balance settled with the annual return

2.3 Advantages

• Lower marginal tax for high earners (25% IS + dividend tax) often beats IR (up to 45% + social charges)
• Profit retention taxed only at IS — undistributed profits compound at company level
• Director remuneration deductible — reduces IS base
• Investor-friendly — venture capital and private equity expect IS structure

2.4 Disadvantages

• Double taxation — IS at company level, then dividend tax at shareholder level (PFU 30% or barème option)
• Less suitable for low-profit businesses — 15% rate is good but not as good as IR for very small earnings
• Acomptes required even before profitability is established

3. IR — Impôt sur le Revenu (Transparency)

3.1 How It Works

Under CGI article 8, profits of an “IR société” are not taxed at the company level. They are deemed distributed to associates in proportion to their shares and taxed in the associate’s personal income tax return under the relevant category (BIC, BNC, BA depending on activity).

The associates pay:

• Income tax at the progressive scale (0% to 45% from €177,106 of taxable income for 2026 brackets)
• Social charges (CSG/CRDS at 17.2% on capital income; or cotisations sociales at 30–45% on professional income for working associates of certain forms)

3.2 Advantages

• No company-level tax — full transparency
• Loss deductibility at associate level — startup losses can offset other income
• Simple corporate side — no complex acompte calculations
• Family transfer-friendly under specific regimes

3.3 Disadvantages

• Marginal rate exposure — high earners pay 45% + 4% Contribution Exceptionnelle Hauts Revenus
• Social charges on full profit — even retained profit triggers cotisations sociales for working associates
• Less investor-friendly — sophisticated investors prefer IS opacity
• Limited duration of the IR option for IS-default forms (5 years maximum)

4. The IR Option for IS-Default Forms (Article 239 bis AB)

Since 2008, certain SARL, SAS, and SA can opt for IR for 5 years maximum, provided:

• Turnover < €10 million
• Fewer than 50 employees
• Capital and voting rights held ≥ 50% by individuals; ≥ 34% by directors and immediate family
• Activity is industrial, commercial, agricultural, or non-commercial professional (no real estate management, no management of own securities portfolio)
• Less than 5 years since creation
• Not listed on a regulated market

This option suits small loss-making startups that want to pass losses to shareholders during early years, then convert to IS at maturity.

Reference: https://bofip.impots.gouv.fr/

5. Decision Matrix — Profit-Level Crossover

A simplified comparison, holding constant a single founder taking all profit as either remuneration (IR societies) or dividend (IS societies):

The crossover depends on family situation (quotient familial), other income, social charge structure, and dividend strategy. Modeling under both scenarios is essential.

6. Dividends — The Other Side of the IS Decision

Dividends paid by an IS company are taxed in the recipient’s hands at:

• PFU (Prélèvement Forfaitaire Unique) 30% — 12.8% income tax + 17.2% social charges (CGI article 200 A)
• Or, by option, the progressive income tax scale + 17.2% social charges (with 40% abatement on dividend portion)

PFU is usually the simpler and lower-cost route for high-bracket taxpayers.

7. Director Remuneration — How It Differs

The high social charge cost on SAS président remuneration often leads founders to prefer dividend strategies under IS — but the social charges schema must be balanced against retirement entitlements.

8. Common Mistakes — Gyoseishoshi View

9. Investor and Exit Considerations

If exit is contemplated (acquisition, VC funding, IPO), the IS regime is functionally mandatory by 2026 best practice. Investors:

• Expect IS opacity for clean carve-outs
• Expect ability to issue preferred shares with fiscal coherence
• Expect tax-loss carryforwards at company level (article 209-I CGI), which IR does not provide

If IR was chosen at incorporation, plan a switch to IS well in advance of fundraising — the switch is generally tax-neutral but requires shareholder resolution and BOFIP-compliant filing.

10. The Pro-Active Rule — Switch is Allowed Once

Under CGI article 239-1, a société de personnes (IR by default) can opt for IS, but the option is irrevocable in principle. Reverse switches are not generally available. Plan accordingly.

Conclusion — A Long-Term Architectural Choice

The IS vs IR choice is not a recurring decision — it shapes the company’s tax architecture for years and, if reversed late, can incur transition costs. For most growth-oriented French companies, IS is the standard. For micro-businesses and family ventures, IR offers simplicity and direct tax flow-through.

A Gyoseishoshi cannot file French tax returns or advise on French personal tax. Scrib🐮 produces the corporate documents: statutes specifying initial regime, board minutes for IS option, shareholder communications for IR option, and the supporting fiscal-coherence pack.

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Disclaimer

Legal information, not legal advice. MmowW Scrib🐮 is operated by a licensed Gyoseishoshi (行政書士) office in Japan. We are not avocats.

Sources

• Code général des impôts (Légifrance): https://www.legifrance.gouv.fr/codes/texte_lc/LEGITEXT000006069577/
• Régime fiscal de la société (impots.gouv.fr): https://www.impots.gouv.fr/professionnel/regime-fiscal-de-la-societe
• BOFIP doctrine fiscale: https://bofip.impots.gouv.fr/
• entreprendre.service-public.fr: https://entreprendre.service-public.fr/vosdroits/F23278