Tax optimization: a legal strategy

Updated April 2026 - Tax optimization is not tax avoidance. It's the art of using existing rules, at the right time, with the right documentation. In 2026, with the increase in the PFU to 31.4%, the 0.9% revaluation of the income tax scale and the removal of the irrevocability of the choice between PFU and progressive scale, there is room for maneuver - provided they are structured correctly. The line between legal optimization and unnecessary risk-taking always passes through three criteria: substance, consistency and traceability.

Tax optimization consists of organizing one's affairs using the provisions provided for by law in order to reduce the tax burden. Unlike tax fraud, which is illegal, tax optimization is based on applicable and published texts. The Constitutional Council regularly reminds us that the taxpayer has the right to choose the least taxed path among the legal options available to him.

In practice, a legitimate tax strategy is based on real operations, justified by economic interest and documented. The French tax administration regulates this practice through the doctrine published in BOFiP and the tax ruling procedure, which makes it possible to obtain an official position before implementing an arrangement.

Arbitrate the manager's rémunération#

The choice between salary and dividends remains the first lever of tax optimization for a manager. Since January 1, 2026, the PFU has stood at 31.4% (12.8% IR + 18.6% social security contributions), following the 1.4 point increase in the CSG voted in the 2026 finance law.

For a SAS manager, the salary opens social rights but supports high social security contributions. Dividends, on the other hand, are taxed at the PFU without social security contributions (except CSG/CRDS). The trade-off depends on the level of compensation, the TMI and the capacity of the company to carry the load.

For a manager of an SARL (TNS), the calculation differs: rémunération is subject to social security contributions for self-employed workers, generally lower than the general régime, which modifiés the equation.

Structuring via a holding company#

Setting up a holding company allows you to pool cash between subsidiaries through the parent-subsidiary régime and tax integration. Dividends passed up to the holding are only taxed at 5% (statutory lump-sum for costs and charges) at corporate income tax level. This structure also facilitates external growth operations, asset transfer and wealth protection.

Tax optimization by the holding company must, however, be based on economic reality: effective management, real provision of services between entities, and invoicing consistent with market prices.

Use wealth-building envelopes#

Life insurance, the PER (Retirement Savings Plan, comparable to a US 401(k)) and the PEA (Equity Savings Plan) offer tax advantages regulated by law:

• Life insurance: reduced taxation after 8 years of ownership, with an annual allowance of €4,600 (single) or €9,200 (couple) on earnings;
• PER: payments are deductible from taxable income within the limits of the ceilings provided for in article 163 quatervicies of the CGI, with a possible exit in capital or annuity;
• PEA: income tax exemption after 5 years of holding (social contributions of 18.6% still apply).

Anticipate the transmission of heritage#

Transferring a business or real estate assets can generate substantial transfer taxes. Several legal mechanisms allow you to reduce them:

• Dutreil Pact: exemption of 75% from transfer taxes on company securities, subject to collective and individual retention conditions;
• Gift-sharing (donations-partages): renewable allowances every 15 years (€100,000 per child per parent);
• Dismemberment of ownership: donation of bare ownership with retention of the usufruct, reducing the tax base according to the usufruct tax scale.

The 2026 income tax brackets have been revalued by 0.9%, which mechanically benefits all taxpayers. The bands apply to income earned in 2025 and declared in spring 2026.

Furthermore, the 2026 finance law introduced a major change: the choice between the PFU and the progressive scale will no longer be irrevocable from the 2026 income declaration (made in spring 2027). Taxpayers will be able to change their choice retroactively within a 3-year claim period. This flexibility strengthens tax optimization possibilities for holders of capital income. For non-taxable taxpayers or taxed at 11% TMI, the option for the progressive scale generally remains more advantageous than the PFU, thanks to the 40% reduction on dividends and the deductibility of part of the CSG.

The French tax administration has several tools to challenge arrangements that it considers abusive:

• abuse of tax law (article L. 64 of the LPF): reconstitution of the tax burden when the taxpayer has fictitiously or artificially reduced his tax;
• mini-abuse of rights (article L. 64 A of the LPF): targets arrangements whose motivation is exclusively fiscal, even without fictitious or artificial;
• the abnormal management act: jurisprudential concept allowing the administration to reinstate expenses deemed excessive or without compensation.

For a tax optimization strategy to withstand scrutiny, it must demonstrate real economic substance, overall consistency and impeccable documentation.

The tax ruling, provided for in article L. 69 A of the LPF, allows any taxpayer to submit to the administration a precise description of a planned transaction and to obtain a formal response on its tax treatment. If the administration does not respond within 6 months, its silence constitutes tacit agreement.

This procedure is particularly useful for restructuring operations, cross-border arrangements or complex asset arbitrations. It offers legal certainty that few taxpayers exploit sufficiently.

We build tax stratégies that are readable, documented and adapted to the profile of the manager, company or individual. From compensation arbitration to asset structuring, including tax rulings and estate planning, we support you at every stage.

**Build** a solid tax strategy

Legally reducing taxation in 2026 remains possible, provided you think in terms of a global strategy and not an isolated recipe. Recent developments – increase in the PFU to 31.4%, increased flexibility in the choice of taxation, revaluation of the scale – create both constraints and opportunities. The key lies in anticipation, documentation and dialogue with the administration.

(Official sources: Service-public.fr - evolution of the PFU 2026, impôts.gouv.fr - tax ruling, BOFiP - applicable tax doctrine, article L. 64 and L. 64 A of the LPF, article 163 quatervicies of the CGI, legifrance.gouv.fr - finance law 2026)