France Finance Act 2026, What M&A, Private Equity and Holding Companies Must Know

The Loi de finances pour 2026 entered into force on 1 January 2026, introducing a suite of France Finance Act 2026 corporate tax changes that directly reshape deal economics for acquirers, sellers and financial sponsors operating in France. From a new 20 % levy on non-professional assets held through patrimonial holding structures to tightened interest-deduction rules for minority shareholder loans, an extended exceptional corporate surtax and expanded DAC9 transparency obligations, every live or pending transaction requires immediate reassessment. This guide translates the legislative text into actionable checklists, worked numerical examples and model contract language designed for CFOs, PE sponsors, corporate treasurers and M&A counsel negotiating deals in France throughout 2026.

Key Takeaways for Deal Teams

• Buyers: Update financial models to reflect higher effective tax rates (surtax extension plus Pillar Two top-up), request expanded data-room documentation on asset classification, and insist on enhanced seller tax indemnities covering patrimonial-holding and interest-deduction exposures.
• Sellers: Audit holding-company asset registers now, reclassification from non-professional to professional assets before closing can eliminate the 20 % patrimonial-holding tax hit, but anti-avoidance risk is real and must be documented with genuine business substance.
• Sponsors and lenders: Stress-test LBO debt-service coverage ratios against potential interest disallowance on minority shareholder loans, reprice IRR targets downward by an estimated 50–80 basis points on mid-market French deals, and require borrower-side lender certification covenants in facility agreements.

France Finance Act 2026 Corporate Tax Changes, Overview of the Headline Measures

The Finance Act 2026 contains several targeted corporate-tax measures that shift the playing field for M&A, private equity and holding-company transactions. Industry observers expect these provisions to have a measurable impact on deal flow, pricing and structuring decisions across mid-market and large-cap French transactions. The headline changes fall into five categories.

• Patrimonial-holding tax. A 20 % tax on specified non-professional assets held through French and certain non-French patrimonial holdings, the most significant structural change for family offices and founder-led exits.
• Interest-deduction tightening. Reinforced arm’s-length requirements and documentation obligations for interest paid on loans from minority or related-party shareholders, with potential full disallowance for non-compliant arrangements.
• Exceptional corporate surtax extension. The temporary surtax first introduced in prior Finance Acts is extended for fiscal year 2026 with adjusted turnover thresholds, increasing the effective corporate tax rate for large groups.
• Social contributions on investment income. Upward adjustments to social levies applicable to capital gains and investment returns, further compressing net proceeds on exits.
• DAC9 and Pillar Two. Transposition of DAC9 transparency obligations and continued implementation of the OECD/EU global minimum tax framework (Pillar Two), creating new reporting burdens and top-up tax modelling requirements for multinational groups.

Legislative Timeline and Effective Dates

Patrimonial Holding Tax 2026, Who Is Caught and Key Modelling Impacts

The patrimonial holding tax 2026 is the provision generating the most concern among family offices, founder-sellers and private equity sponsors holding French portfolio companies through intermediate holding vehicles. The measure targets entities whose balance sheet is predominantly composed of non-professional assets, broadly, assets not used in an active trade or business, and subjects those assets to a standalone 20 % levy.

The scope is deliberately wide. Both French-incorporated holdings and foreign entities with substantial French-situs non-professional assets fall within the definition. The taxable base encompasses real estate held for investment purposes, financial securities that do not qualify as a strategic stake, cash reserves exceeding operational needs, and other passive-income-generating assets. Exemptions exist for assets directly and exclusively deployed in the entity’s active commercial operations, and early indications suggest that the forthcoming administrative guidance will introduce a de minimis threshold for mixed-asset balance sheets where professional assets represent at least 75 % of total gross asset value.

Attribution rules apply through tiers: if a parent holding owns a chain of subsidiaries, the non-professional assets of each subsidiary are attributed upward on a look-through basis for purposes of calculating the parent’s patrimonial-holding tax exposure. This attribution mechanism means that even a holding company with no direct non-professional assets can be caught if its subsidiaries hold significant passive positions.

Worked Example, Family Holding with Mixed Assets

Consider a French SAS holding company with a total gross asset value of €50 million. Of this, €35 million represents shares in an active operating subsidiary (professional), €10 million is invested in listed securities held as treasury investments (non-professional), and €5 million sits as cash on deposit beyond operational requirements (non-professional). The non-professional assets total €15 million. Under the 20 % patrimonial-holding tax, the levy amounts to €3 million, reducing distributable reserves and directly compressing the net proceeds available to shareholders on a sale or dividend distribution.

If the holding were restructured pre-closing so that the €10 million in listed securities were transferred to the operating subsidiary for genuine working-capital management purposes, and the excess cash were deployed via a documented intra-group loan supporting expansion capex, the non-professional asset base could fall below any de minimis threshold. However, any restructuring undertaken without genuine commercial substance, or executed within an aggressive timeline immediately before a contemplated disposal, carries material anti-avoidance risk under the general abuse-of-law doctrine (abus de droit).

Practical Response Options for Sellers and Buyers

• Asset reclassification. Review each balance-sheet item against the professional-asset definition. Document the active business purpose of each holding with board resolutions and operational evidence.
• Pre-closing asset transfers. Consider moving passive assets to an operating entity, but only where backed by a genuine commercial rationale, and allow sufficient lead time (industry observers recommend a minimum of six months before any anticipated exit process).
• Buyer due-diligence demand. Request a detailed asset-by-asset classification schedule in the data room, certified by the target’s CFO, with supporting documentation for each line item claimed as professional.
• Anti-avoidance awareness. Both parties should document the business purpose of any restructuring and obtain a tax opinion from independent counsel. The likely practical effect of aggressive last-minute reclassifications will be heightened audit scrutiny from the French tax administration.

Interest Deduction, Related-Party Loans and Minority Shareholder Financing

The Finance Act 2026 reinforces the conditions under which interest paid on loans from minority or related-party shareholders remains deductible for French corporate-tax purposes. Under the revised framework, interest deduction for minority shareholders is subject to a stricter arm’s-length benchmark, expanded documentation requirements and a potential full disallowance where the borrower cannot demonstrate that the loan terms, rate, maturity, security package, correspond to what would have been obtainable from an independent lender on similar terms.

France’s existing thin-capitalisation rules (debt-to-equity ratio test, interest-coverage test and percentage-of-taxable-income test) continue to apply in parallel. The 2026 changes layer additional substance requirements on top of the mechanical tests. In practice, this means that even where a related-party loan passes the ratio thresholds, the interest may still be disallowed if the borrower lacks contemporaneous documentation proving the arm’s-length character of the arrangement.

Documentation to Preserve Deductibility

• Lender certification. Obtain a written certification from the lending shareholder confirming the loan terms, including the interest rate, maturity, repayment schedule and any security granted.
• Market benchmark. Commission or prepare a transfer-pricing study (or abbreviated benchmarking analysis) demonstrating that the interest rate falls within the interquartile range of comparable arm’s-length transactions.
• Board resolution. Document the borrower’s board approval of the loan, including the commercial rationale for choosing shareholder debt over external financing.
• Annual update. Refresh the benchmarking analysis at each fiscal year-end, reflecting changes in market rates and the borrower’s creditworthiness.

Model Covenant, Lender Certification and Interest Cap

Deal teams should consider inserting the following covenant into facility agreements and shareholder loan documentation:

“Each Lender that is a Related Party Lender (as defined herein) shall, within 30 Business Days of each Interest Payment Date, deliver to the Borrower and the Agent a Lender Certification confirming that the interest rate applied to amounts outstanding under this Agreement does not exceed the Arm’s-Length Rate as determined by reference to an independent benchmarking analysis prepared in accordance with the OECD Transfer Pricing Guidelines and French domestic transfer-pricing rules. In the event that no such Lender Certification is delivered, the Borrower shall be entitled to withhold payment of interest in excess of the applicable statutory reference rate until such certification is received.”

Worked Example, Impact on LBO Debt Service and IRR

In a hypothetical €100 million LBO, assume €30 million of acquisition debt is provided by a minority co-investor at an interest rate of 8 % per annum (€2.4 million annual interest). If the French tax administration disallows the interest deduction in full due to insufficient arm’s-length documentation, the tax shield lost equals €2.4 million × 25 % (standard CIT rate) = €600,000 per year. Over a typical five-year hold period, this represents €3 million in lost tax benefit, directly reducing the sponsor’s net cash flows and compressing the levered IRR by an estimated 50–80 basis points depending on the capital structure and exit assumptions.

LBO and Private Equity Deal Impacts, Financing, Covenants, Waterfall and Valuation

For private equity France 2026 transactions, the cumulative effect of these measures, the patrimonial-holding tax, interest-deduction tightening, surtax extension and increased social contributions, requires sponsors and lenders to revisit fundamental assumptions in their financial models. The adjustments are not marginal: on a mid-market French deal with enterprise value between €100 million and €500 million, early indications suggest that the combined impact can reduce levered IRR by 75–150 basis points compared with pre-2026 modelling conventions.

Financing Checklist for Lenders

• Covenant stress test. Re-run debt-service coverage ratio (DSCR) and interest-coverage ratio (ICR) covenants under a scenario where 100 % of related-party interest is disallowed. If the deal breaches at that stress level, renegotiate headroom or require additional equity.
• Patrimonial-holding exposure test. Require the borrower to certify quarterly that no subsidiary’s non-professional assets exceed the de minimis threshold (once administrative guidance clarifies the percentage).
• Tax reserve. Build a ring-fenced tax reserve in the cash waterfall to cover potential patrimonial-holding tax liabilities identified post-closing.
• Refinancing window. Factor the surtax extension into refinancing assumptions, higher effective tax rates reduce free cash flow available for debt prepayment, potentially extending the timeline to refinancing triggers.
• DAC9 compliance covenant. Require the borrower to maintain systems and processes sufficient to comply with DAC9 reporting from closing onwards.

Sample Model Adjustments, Before and After

Negotiation Playbook, Buyer and Seller Positions

The likely practical effect of the France Finance Act 2026 corporate tax changes on negotiations will be felt most acutely in purchase-price mechanics and risk-allocation provisions:

• Buyers should push for locked-box adjustments that deduct estimated patrimonial-holding tax liabilities from the equity value, enhanced tax indemnities covering any reclassification or disallowance arising from the new rules, and a specific escrow equal to 100–150 % of the estimated patrimonial-holding tax exposure.
• Sellers should resist blanket indemnities and instead propose caps tied to the audited non-professional asset value at closing, with a sunset period aligned to the relevant statute of limitations (typically three years for standard assessments, six years for deliberate non-compliance).
• Earnout and deferred consideration. If part of the purchase price is structured as an earnout, model the post-2026 tax rate into the performance metrics. A working-capital target set using pre-2026 assumptions will systematically overstate free cash flow and inflate the earnout calculation.

Corporate Surtax 2026 France, Pillar Two and DAC9, Compliance and Modelling Implications

The exceptional corporate surtax that was first introduced as a temporary measure has been extended for fiscal year 2026 with recalibrated turnover thresholds. The surtax applies as an additional percentage on top of the standard 25 % corporate income tax rate for companies or consolidated groups whose turnover exceeds specified levels. Industry observers expect the effective CIT rate for large acquirers to land between 27.5 % and 30.5 %, depending on the turnover bracket.

The interaction between this French surtax and the OECD/EU Pillar Two global minimum tax framework (15 % effective rate) is critical for multinational groups. Where the combined French effective rate, including surtax, already exceeds 15 %, no top-up tax will typically be triggered in France. However, the group must still model the effective rate jurisdiction by jurisdiction: if a French acquisition target has low-tax foreign subsidiaries, the acquirer may face top-up tax obligations elsewhere in the group that were not previously priced into the deal.

DAC9 Implications France, What to Collect in Diligence

The transposition of DAC9 into French law requires in-scope entities to report Pillar Two-related information to the French tax administration, which then exchanges this data automatically with other EU member states. For deal teams, this creates new due-diligence requirements:

• Beneficial ownership data. Collect comprehensive ownership chains for all group entities, including intermediate holding vehicles in non-EU jurisdictions.
• Jurisdictional effective tax rate calculations. Request the target’s Pillar Two GloBE (Global Anti-Base Erosion) calculations, or at minimum obtain the data necessary to prepare them (financial accounting data, permanent differences, qualified taxes paid by jurisdiction).
• Systems and processes. Assess whether the target has the reporting infrastructure in place to comply with DAC9 from day one post-closing, gaps create integration cost and compliance risk.

Worked Example, Group Effective Tax Rate Impact

Consider a French group with €800 million in consolidated turnover. The standard CIT is 25 %. The extended surtax adds approximately 2.5–5.5 percentage points (depending on the precise tier), yielding a blended French effective rate of approximately 28 %–30.5 %. Separately, the group has a subsidiary in a jurisdiction with a 10 % effective rate. Under Pillar Two, a top-up tax of approximately 5 % applies to bring the subsidiary’s rate to 15 %. The combined group-level tax burden therefore increases on two fronts, the domestic surtax and the foreign top-up, a cost that must be reflected in consolidated post-tax cash flow projections.

Practical Due Diligence Checklist and Red Flags

Every 2026 transaction involving a French target should incorporate the following additional diligence items, alongside the standard corporate, tax and employment workstreams:

• Asset classification schedule. Request a detailed asset-by-asset register with professional/non-professional classification, supported by board resolutions and operational evidence.
• Related-party loan register. Obtain copies of all shareholder loan agreements, promissory notes and intra-group facility agreements, along with any existing transfer-pricing studies or benchmarking reports.
• Surtax computation. Request the target’s surtax calculation for the most recent fiscal year and projections for FY 2026.
• DAC9/Pillar Two readiness. Assess whether the target’s finance team has the data, systems and processes to prepare GloBE calculations and comply with DAC9 reporting deadlines.
• TP documentation and penalties. Verify the existence and currency of transfer-pricing documentation, French penalties for missing or incomplete TP documentation are significant and can compound rapidly on assessment.
• Participation exemption eligibility. Confirm that any contemplated exit or distribution benefits from the régime des sociétés mères (participation exemption), and that the holding period and threshold conditions remain satisfied post-restructuring.

Quick Escalation Flow for Material Exposure

Where identified patrimonial-holding tax exposure exceeds €1 million, or where related-party interest at risk of disallowance exceeds €500,000 annually, deal teams should immediately escalate to transaction tax counsel and consider requiring a specific tax indemnity or escrow as a condition to closing. The following contract language can be adapted:

“In the event that the aggregate Identified Tax Exposure (as defined in Schedule [X]) exceeds the Materiality Threshold, the Seller shall deposit into the Escrow Account an amount equal to 120 % of the Identified Tax Exposure, to be released upon the earlier of (i) receipt of a final non-appealable tax assessment confirming no additional liability, or (ii) expiry of the applicable limitation period.”

Recommended Negotiation Playbook and Model Clauses

The following clause bank provides ready-to-use redline language that deal teams can adapt for share purchase agreements, facility agreements and shareholders’ agreements in light of the Finance Act 2026 France provisions:

• Seller tax indemnity (patrimonial-holding). “The Seller shall indemnify and hold harmless the Buyer against any Tax Liability arising from the application of the patrimonial-holding tax provisions of the Loi de finances pour 2026 to non-professional assets held by any Group Company as at the Closing Date, net of any provision already reflected in the Closing Accounts.”
• Escrow trigger clause. “If, at any time during the Indemnity Period, the Buyer receives a tax assessment or audit notification relating to the patrimonial-holding tax or the disallowance of related-party interest deductions, the Escrow Agent shall retain the Escrow Amount until the matter is finally resolved.”
• Interest certification covenant (for facility agreements). “The Borrower shall procure that each Related Party Lender delivers a Lender Certification in the form set out in Schedule [Y] within 30 Business Days of each Interest Payment Date, confirming that the applicable interest rate does not exceed the Arm’s-Length Rate.”
• Representation, asset classification. “The Seller represents and warrants that Schedule [Z] sets forth a complete and accurate classification of all assets held by each Group Company as professional or non-professional for the purposes of the patrimonial-holding tax, and that such classification has been prepared in good faith and in accordance with applicable statutory definitions.”
• Working-capital adjustment. “For the purposes of calculating the Closing Working Capital, the Target Working Capital shall be adjusted to reflect the estimated patrimonial-holding tax liability and the loss of any interest deduction tax shield attributable to Related Party Loans, in each case as calculated by the Buyer’s tax adviser and set out in the Completion Statement.”

Pre- and Post-2026 Treatment, Comparison Table

Conclusion, Immediate Actions for 2026 Deals in France

The France Finance Act 2026 corporate tax changes represent the most consequential shift in French deal economics in recent years. Every live or pipeline transaction requires a structured response: audit asset classification, stress-test financial models against higher effective tax rates and interest disallowance, expand due-diligence scope for DAC9 and Pillar Two, and embed protective clauses, tax indemnities, escrows and lender certifications, into transaction documentation. Deal teams that integrate these steps now will protect returns and avoid costly post-closing surprises. For specialist guidance on structuring M&A and private equity transactions under the new framework, consult the Global Law Experts lawyer directory to connect with experienced corporate and tax practitioners in France.

Sources

1. Legifrance, Loi de finances pour 2026
2. Ministère de l’Économie, Finance Act 2026 Press Notes
3. Service-public.gouv.fr, Official Guidance
4. PwC Tax Summaries, France Significant Developments
5. KPMG, Finance Act 2026 Tax Measures Alert
6. EY Tax News, French Parliament Approves Finance Bill for 2026
7. OECD, Pillar Two / BEPS Framework
8. Moncey Avocats
9. Veil Jourde
10. Rödl & Partner