France 2026 Corporate Tax Surcharge: Key Facts for Large Groups and Mid-Caps

The 2026 Finance Act (Loi n° 2025-1680) extends France's exceptional corporate tax surcharge — the Contribution Exceptionnelle sur les Bénéfices des Grandes Entreprises (CEBGE) — for a second year. Originally introduced for fiscal year 2025, the measure is renewed for 2026 with one key structural change: the revenue threshold rises from €1 billion to €1.5 billion, effectively removing most ETI (mid-cap companies) from scope.

For the finance and tax teams of affected groups — including foreign multinationals with significant French operations — this creates immediate cash-flow planning requirements, particularly around the mandatory December 2026 advance payment.

US parallel: The CEBGE is structurally analogous to a US corporate minimum tax or surtax — an additional levy on top of the standard 25 % corporate rate, targeting the largest firms. France's standard IS rate is 25 %; the CEBGE pushes the effective combined rate to 30–35 % for qualifying groups.

In-scope: large French groups and French subsidiaries of foreign multinationals

The CEBGE applies to entities whose consolidated worldwide revenue exceeds €1.5 billion for fiscal year 2026. This threshold is assessed at the group level — not the standalone French entity level:

• A French subsidiary of a US multinational whose consolidated group revenue exceeds €1.5 billion is subject to the surcharge on its French IS, even if the French subsidiary's own revenue is far below €1.5 billion
• A French-headquartered group with consolidated revenue above the threshold is subject to the surcharge on the group's combined French IS
• French tax-consolidated groups (intégration fiscale) calculate the surcharge on the integrated group's IS

Out-of-scope

• Groups with consolidated worldwide revenue below €1.5 billion
• Associations and non-profits not subject to standard IS
• Most French ETI, which was the explicit parliamentary intent in raising the threshold

Calculation basis: The surcharge is computed on the average IS paid in 2025 and 2026 — not on 2026 alone. This two-year averaging mechanism reduces volatility, but it also means groups that were highly profitable in 2025 cannot escape through a weaker 2026 result.

Worked example: A US group with a French subsidiary has consolidated revenue of €4 billion. French IS was €40M in 2025 and is projected at €60M for 2026. Average IS = €50M. CEBGE = €50M × 41.2 % = €20.6 million in addition to the standard 25 % IS.

The most operationally disruptive aspect of the CEBGE is its mandatory advance payment:

• 98 % of the estimated CEBGE is due on the same date as the last IS installment — typically December 15, 2026 for calendar-year entities
• The remaining 2 % balance is settled when the annual tax return is filed (May–June 2027)
• Under-estimating the advance triggers late-payment interest (0.2 % per month)

This means nearly the entire CEBGE must be cash-settled in December 2026 — before year-end closing. Finance teams must:

1. Include the CEBGE in the 2026 tax provision budget immediately
2. Compute the IS average based on 2025 actual and 2026 forecast
3. Ensure the December cash balance covers both the standard IS installment and the CEBGE advance
4. Communicate the liquidity impact to treasury and group finance

French-headquartered groups using intégration fiscale calculate the CEBGE at the consolidated group level. The group parent is the legal entity responsible for payment. Intra-group allocations of the CEBGE cost should be addressed in the group's tax-sharing agreements.

The CEBGE is levied on French IS. France's bilateral tax treaties generally apply to the underlying IS — treaty provisions may not automatically extend to the CEBGE surcharge, depending on whether the applicable treaty covers "identical or substantially similar taxes."

Practical consequence for US groups: Confirm with your French tax adviser whether the CEBGE is covered under the US–France treaty provisions relevant to your structure. This affects dividend withholding credits and available FTC positions.

The CEBGE was initially passed for 2025 at a €1 billion threshold. During the 2026 Finance Act process, the Senate voted to abolish the surcharge entirely, arguing it damaged France's attractiveness and contradicted fiscal stability principles. The final compromise maintained the surcharge but raised the threshold to €1.5 billion. The measure is explicitly presented as temporary — but France's fiscal deficit context (~4.6 % of GDP) means future Finance Acts may revisit it.