Flat tax in France: the complete guide for managers and investors in 2026

La Flat tax — or single lump-sum debit (PFU) — has become in a few years the central mechanism for the taxation of capital income in France. Established in 2018, it has profoundly simplified the taxation of dividends, interests and capital gains. But this apparent simplicity masks a mechanism that is more subtle than it seems, and The year 2026 marks a turning point : increase in social security contributions, introduction of the differential contribution on high incomes (CDHR), new optimization strategies to be rethought.

This guide aims to offer you a 360° vision of flat tax: how it works, the income concerned, the specific taxation of life insurance, the techniques to legally reduce your taxation on dividends and the pitfalls to avoid. Whether you are a business executive, investor or executive receiving investment income, here you will find the keys to making informed decisions.

What is flat tax? Definition and operation of the single lump-sum levy

Flat tax: definition

La Flat tax, literally translated as “flat rate tax”, is the name commonly given to single lump-sum debit (PFU). It is a method of taxing capital income that applies a single rate, the same for all taxpayers, regardless of their overall income.

Concretely, the flat tax consists of two elements:

• 12.8% under theincome tax (IR)
• 17.2% under social security contributions (CSG, CRDS, solidarity levy)

That is an overall rate of 30% since its creation in 2018.

The principle is simple: for each euro of capital income subject to flat tax, you pay 30 cents in taxes and contributions, without taking into account your marginal tax bracket or the composition of your fiscal household. It is this uniformity that distinguishes the flat tax from the progressive income tax schedule, where the rate increases with the level of income.

Concrete example: You receive 20,000 euros in dividends from your SAS. With the 30% flat tax, you pay 6,000 euros in tax and social security contributions. It does not matter if your annual income is 30,000 or 300,000 euros: the amount taken from these dividends remains the same.

Why was flat tax created?

Before 2018, capital income (dividends, interests, capital gains) was subject to Progressive income tax schedule, to which social security contributions were added. For taxpayers located in the highest brackets, taxation could reach more than 60% on capital income.

The 2018 finance law, backed by the Macron government, established the PFU with a double objective: Simplifying the taxation of savings and strengthen France's economic attractiveness by aligning capital taxation with European standards. The underlying idea was to encourage investors to direct their savings to businesses rather than real estate investments or savings accounts.

What income is subject to flat tax?

The flat tax applies to a wide range of capital income:

Dividends distributed by companies subject to corporate tax (SAS, SARL, SA, etc.), whether regular or exceptional distributions.

The interests collected on term accounts, unregulated bank books, bonds and claims of any kind.

Capital gains from the sale of securities, that is to say the gains made when selling shares, shares, shares in investment funds or bonds.

Life insurance products, according to specific modalities that we will detail later.

Earnings on cryptoassets, subject to the PFU as soon as they are converted into legal tender (euros).

Income from certain fixed income investments : PEL over 12 years old or open since 2018, CEL, etc.

On the other hand, some income is exempt from the flat tax: regulated booklets (Livret A, LDDS, LEP), the land revenue (subject to the progressive scale) and real estate capital gains (specific regime).

Increase in the flat tax in 2026: what is changing concretely

The flat tax rose from 30% to 31.4%

The year 2026 marks a significant evolution for the flat tax. La Social Security Financing Act (LFSS) for 2026, adopted in December 2025, raised the rate of CSG (generalized social contribution) of 1.4 points on wealth income and investment products. The CSG rate applicable to this income thus increased from 9.2% to 10.6%.

As a result, global social security contributions increased from 17.2% to 18.6% for most financial income, bringing the PFU to:

12.8% (IR) + 18.6% (social security contributions) = 31.4%

The income tax rate (12.8%) did not not changed. Only the social component increased.

What investments are affected by this increase?

Not all financial income is affected in the same way. Les products subject to the rate of 31.4% since January 1, 2026, the following are in particular:

• Les dividends received on an ordinary securities account
• Les interests of unregulated term accounts and passbooks
• Les Capital gains on sale of shares, bonds and shares
• Les Earnings on cryptoassets
• Les PEA products in case of withdrawal before 5 years

Which investments maintain the 17.2% social security tax rate?

Good news for some savers: several envelopes have been excluded from the increase in CSG and keep social security contributions at 17.2%, i.e. an overall rate of 30% when the PFU applies:

• THElife insurance (the government has explicitly excluded this envelope from the increase)
• Les PEL and CEL
• Les PEP (popular savings plans)
• Les land revenue And the real estate capital gains

Summary table: flat tax by investments in 2026

Concrete example: You will receive 10,000 euros in dividends in 2026. With the 31.4% flat tax, you pay 3,140 euros (compared to 3,000 euros in 2025). The difference may seem modest on this amount, but it increases considerably for large portfolios.

Life insurance and flat tax: a privileged but subtle tax system

How does flat tax apply to life insurance?

Life insurance benefits from a derogatory tax regime that sets it apart from other financial investments. The flat tax applies to the products (earnings) generated by the contract, but only during a repurchase (partial or total withdrawal). As long as you don't withdraw anything, no taxation is due — that's the principle of capitalization.

Applicable taxation depends on two criteria : the age of the contract and the date of payments.

For payments made since September 27, 2017, the diet is as follows:

Contract for less than 8 years: earnings are subject to the PFU at the rate of 12.8% of IR + 17.2% of social security contributions, or 30% in total. Alternatively, the taxpayer can opt for the progressive scale.

Contract for more than 8 years: earnings benefit from a reduced rate of 7.5% IR (instead of 12.8%) for payments that total no more than 12.8 per cent 150,000 euros by insured. Above this threshold, the rate of 12.8% applies. In all cases, social security contributions remain at 17.2%.

The deduction of 4,600 euros and 9,200 euros: a major advantage

The most attractive life insurance system comes after 8 years of ownership. Withdrawn earnings benefit from a annual deduction before taxation:

• 4,600 euros For a single person
• 9,200 euros for a married couple or in a civil partnership subject to joint taxation

This discount applies On the share of earnings included in the repurchase, not on the total amount withdrawn. In other words, if your annual withdrawn earnings do not exceed 4,600 euros (or 9,200 euros for a couple), you do not pay no income tax — only social security contributions of 17.2% remain due.

Concrete example: You are married and have a life insurance policy of more than 8 years. You make a partial repurchase of 30,000 euros, of which 8,000 euros correspond to earnings. Thanks to the 9,200 euros rebate, all of your earnings are exempt from income tax. You only pay social security contributions of 17.2% on the 8,000 euros of earnings, or 1,376 euros.

Why is life insurance spared from the 2026 surge

The government has made an explicit choice toexclude life insurance of the increase in the CSG enacted by the LFSS 2026. Social security contributions on life insurance products therefore remain at 17.2%, where they rise to 18.6% for most other financial income.

This decision is explained by the particular place of life insurance in the wealth of French people: with around 1.9 trillion euros in assets under management, it is the preferred investment for households. The government wanted to preserve this envelope so as not to discourage long-term savings, which contribute to the financing of the economy.

For managers and investors, this exemption further reinforces the attractiveness of life insurance as a tool for diversification and tax optimization.

Flat tax and dividends: the lifeblood for managers

How does the flat tax on dividends work?

For the manager of a company subject to corporate tax (SAS, SARL, SA), dividends often constitute an important part of the remuneration. The flat tax is the default tax regime : it applies automatically if you do not make any particular choice when filing your income tax return.

Taxation takes place in Two strokes :

At the time of payment of dividends : the company takes a sample at the source of 12.8% under the IR (called “non-discharging flat rate” or PFNL) and 18.6% as part of social security contributions. So these are 31.4% that are retained at the time of distribution.

When filing income tax (year N+1) : if you stay at the PFU, the 12.8% sample already taken becomes final. If you opt for the progressive scale, the NTFP of 12.8% is charged as a tax credit on your final taxation, with adjustment (refund of overpayment or supplement to be paid).

The particular case of the majority manager of SARL

The majority managers of SARL or EURL subject to the IS are subject to a specific rule which increases the taxation of dividends. The portion of dividends that exceeds 10% of the share capital, emission premiums and amounts paid into an associate's current account is subject to social contributions under the regime for self-employed workers (about 45 per cent), instead of social security contributions of 18.6 per cent.

Concrete example: You are the majority manager of a SARL whose share capital is 10,000 euros. You pay yourself 50,000 euros in dividends. The fraction subject to conventional social security contributions (18.6%) is 1,000 euros (10% of 10,000). Of the remaining 49,000 euros, you have to pay TNS social security contributions, which are much higher. This rule often makes PEAs or holding companies more attractive for majority managers.

How not to pay the flat tax on dividends? Optimization strategies

The option for the progressive income tax schedule

The first and most accessible strategy is to Give up the flat tax by opting for the Progressive income tax schedule. This option is materialized by the simple fact of check the 2OP box of your tax return.

By opting for the progressive scale, you benefit from two advantages that the flat tax does not allow:

The 40% discount on dividends: only 60% of the gross amount of dividends is included in your taxable income. This allowance is reserved for dividends distributed by companies subject to corporate tax having their headquarters in France, in the EU or in a state linked to France by a tax treaty.

The partial deductibility of the CSG : 6.8% of the gross amount of dividends (corresponding to the deductible CSG) can be deducted from your total taxable income the following year.

lookout : the option for the progressive scale is comprehensive and irrevocable for the year in question. It applies to all of your income from movable capital (dividends, interests, capital gains). You cannot choose the flat tax for your interests and the schedule for your dividends.

Flat tax or progressive rate: how to choose?

The choice depends essentially on your marginal tax bracket (IMT) :

TMI at 0% or 11% : the progressive scale is almost always more advantageous. The 40% reduction and the deductible CSG significantly reduce effective taxation.

TMI at 30% : the situation is more nuanced and depends on the amount of your dividends in relation to your other income. Precise simulation is essential.

IMR at 41% or 45% : the flat tax is generally preferable, as the flat rate of 12.8% is significantly lower than the applicable marginal rate.

The effective rates on the progressive scale take into account the 40% reduction and the deductible CSG of 6.8%. They are indicative and vary according to personal circumstances.

The PEA: the anti-flat tax weapon par excellence

The Stock Savings Plan (PEA) is the most effective tax package to avoid the flat tax on dividends and capital gains. Its operation is as follows:

During the savings phase : the dividends received and the capital gains realized within the PEA are not not taxed. They are capitalized tax-free.

In case of withdrawal after 5 years : the gains are exempt from income tax. Only social security contributions from 18.6% (since 2026) apply. No flat tax at 31.4%: this is a considerable tax gain.

In case of withdrawal before 5 years : the PFU of 31.4% applies and the plan is closed.

The PEA is capped at 150,000 euros payments (225,000 euros with the PEA-PME). Eligible securities must be shares of European companies or fund units that are mainly invested in European shares.

Concrete example: You invest 100,000 euros in your PEA in French shares. After 7 years, your wallet is worth 160,000 euros. You are making a total withdrawal. Your capital gain of 60,000 euros is only subject to social security contributions of 18.6%, or 11,160 euros. With the classic flat tax, you would have paid 18,840 euros (31.4%). The economy is 7,680 euros.

The holding company and the mother-daughter regime: a strategy for managers

For company managers receiving significant dividends, the Establishment of a holding is a powerful optimization strategy. The mechanism is based on the tax regime for parent companies and subsidiaries (articles 145 and 216 of the General Tax Code).

The principle: When a holding holds at least 5% of the capital from a subsidiary for at least two years, the dividends paid from the subsidiary to the holding company are exempt from corporate tax up to 95%. Only a 5% share of expenses and expenses is reintegrated into the taxable result.

Concretely: if your subsidiary pays 100,000 euros in dividends to your holding company, only 5,000 euros (5% share) are taxable at the corporate income tax in the holding company, i.e. around 1,250 euros in tax (at the rate of 25%). The effective taxation is therefore approximately 1.25% instead of 31.4% flat tax that you would have incurred by receiving the dividends directly as a natural person.

The dividends thus accumulated in the holding company may be reinvested (acquisitions, investments, cash flow) without having been subject to personal taxation. Flat tax taxation will only occur when you decide to pay yourself dividends. From the holding company to your personal assets.

This strategy does not eliminate taxes: it does differs. But the tax deferral has a considerable advantage because it makes it possible to make a larger capital grow before tax.

Exemption from advance payments: avoid withholding taxes

If your income is modest, you can ask to be exempt from the non-discharging flat rate of 12.8% which occurs when dividends are paid. This exemption is possible if your reference tax income of the penultimate year is less than:

• 50,000 euros For a single person
• 75,000 euros For a couple subject to joint taxation

The request must be sent to the paying institution (your bank or the distributing company) Before November 30 of the year preceding the payment.

lookout : the exemption only concerns the IR portion (12.8%) of the sample. Social security contributions of 18.6% remain collected at source in all cases. And the exemption does not eliminate the tax: it simply avoids the advance levy, with the final taxation occurring during the tax return.

The differential contribution on high incomes (CDHR): the new reverse tax shield

What is the CDHR and what is its link with the flat tax?

La High Income Differential Contribution (CDHR), established by the Finance Act for 2025, complements the tax system applicable to capital income. Its objective is to ensure a effective minimum taxation of 20% for the highest-income taxpayers.

The CDHR specifically targets profiles who, thanks to the flat tax at 12.8% of IR, have an average tax rate much lower than 20% of their reference tax income. Typically, a manager who pays himself a nominal salary and receives most of his income in the form of dividends taxed at the PFU may end up with an effective IR rate of 12 to 14% — well below the 20% floor.

Who is concerned?

The CDHR applies to taxpayers whose reference tax income exceeds:

• 250,000 euros For a single person
• 500,000 euros For a married couple or in a civil union

If the average tax rate for these taxpayers (excluding social security contributions) is less than 20%, the CDHR comes to fill the gap. A mechanism of Progressive cut attenuates the impact for incomes close to the thresholds (up to 330,000 euros for a single person, 660,000 euros for a couple).

An example to understand the impact

Let's take a single manager who pays himself 20,000 euros in salary and 500,000 euros in dividends. Before the CDHR, its income tax was around 65,000 euros (12.8% PFU on dividends + IR on salary), i.e. an effective rate of around 12.5%. With the CDHR, an additional tax is due to reach the minimum of 20%, bringing the overall tax burden (excluding social security contributions) to around 104,000 euros.

This mechanism has major consequences for executive compensation strategies. It significantly reduces the advantage of flat tax for very high earners and encourages a rethinking of the trade-off between salary and dividends.

The CDHR, originally planned as a temporary measure for 2025 revenues, was extended for 2026 revenue as part of the 2026 finance bill.

Flat taxes and cryptoassets: the rules you need to know

Les capital gains on cryptoassets (Bitcoin, Ethereum, etc.) are subject to flat tax as soon as they result from a conversion into legal tender (euros, dollars, etc.). Exchanges between cryptoassets are not taxable.

Since 2026, the applicable rate is 31.4% (12.8% of IR + 18.6% of social security contributions). Realized capital losses are attributable to capital gains of the same nature for 10 years.

The option for the progressive scale is also possible and may be interesting for low-tax taxpayers.

A complex matter requiring the assistance of a lawyer

The flat tax, despite its apparent simplicity, is part of a changing and increasingly complex fiscal environment. The increase in social security contributions in 2026, the establishment of the CDHR, the interactions between the PFU, the progressive scale, the life insurance regime, the PEA and the holding company structure make it essential to personalized and rigorous analysis of each situation.

Mistakes in choosing can be costly: opting for the progressive scale when the flat tax is more advantageous (or vice versa), ignoring the rules applicable to majority managers, neglecting the impact of the CDHR, or poorly structuring a holding arrangement are all risks that justify the use of a tax and business law lawyer.

A legal professional will be able to:

• Make comparative simulations Precise between flat tax and progressive scale
• Structure your cash flow (salary, dividends, management fees) in an optimal way
• Set up or optimize a Montage holding in accordance with tax law
• Anticipate the consequences of the CDHR on your wealth strategy
• Secure your reporting obligations and prevent the risks of recovery

FAQ: the most frequently asked questions about flat tax

What is flat tax exactly?

The flat tax, or single lump-sum debit (PFU), is a flat-rate method of taxation of capital income introduced in France in 2018. It applies a single rate of 31.4% in 2026 (12.8% income tax + 18.6% social security contributions) on dividends, interests, capital gains and gains on cryptoassets. Some investments, such as life insurance, maintain a social security tax rate of 17.2%, bringing the flat tax to 30%. The PFU applies by default, but the taxpayer can opt for the progressive IR scale each year.

Why is the flat tax increasing in 2026?

The rise in the flat tax in 2026 resulted from the increase in 1.4 points of the CSG rate on wealth and investment income, voted as part of the Social Security Financing Act for 2026. The CSG rate rose from 9.2% to 10.6%, bringing social security contributions from 17.2% to 18.6% and the overall flat tax from 30% to 10.6% 31.4%. The flat rate of IR of 12.8% remains unchanged.

How does flat tax work on life insurance?

Life insurance benefits from a specific tax regime. For payments made since September 27, 2017, the earnings are subject to the PFU in case of redemption: 12.8% of IR + 17.2% of social security contributions (30% in total, as life insurance is excluded from the CSG 2026 increase). After 8 years, the IR rate is reduced to 7.5% for payments not exceeding 150,000 euros, and a annual allowance of 4,600 euros (9,200 euros for a couple) applies to the earnings withdrawn.

How not to pay the flat tax on dividends?

It is not possible to completely avoid taxation on dividends, but there are several levers that can significantly reduce it:

• Opt for the progressive scale (box 2OP) if your TMI is 0% or 11%, which allows you to benefit from the 40% reduction and the deductible CSG.
• Investing via a PEA to benefit from an IR exemption on earnings after 5 years (only social security contributions of 18.6% remain due).
• Structuring a holding arrangement to benefit from the mother-daughter regime (95% exemption from dividends paid) and defer personal taxation.
• Request an advance payment exemption if your reference tax income is below the thresholds (50,000 euros/75,000 euros).

What are the management costs of a business affected by the flat tax?

The flat tax does not apply to business management fees as such. It only concerns capital income received by natural persons (dividends, interests, capital gains). On the other hand, the way in which the manager is paid — salary, dividends, management fees — directly influences the application of the flat tax. Dividends paid to the natural person manager are subject to the PFU; management fees paid between group companies are subject to corporate taxation (IS, VAT) and not to flat tax.

Flat tax or progressive rate: what should I choose for my dividends?

The choice depends mainly on your marginal tax bracket. In general, the progressive scale is more beneficial for taxpayers whose IMR is 0% or 11%. The flat tax becomes preferable from 30% slice, with an advantage that is clearly confirmed for SMIs at 41% and 45%. However, the option for the progressive scale is global (it applies to all your income from movable capital), which requires a Full simulation integrating all of your income and investments before making a decision.

What is the CDHR and am I concerned?

La High Income Differential Contribution (CDHR) is a mechanism introduced in 2025 and extended in 2026 that guarantees a minimum effective tax rate of 20% for households whose reference tax income exceeds 250,000 euros (single) or 500,000 euros (couple). If your average income tax rate is less than 20%, you have to pay a top-up to reach that low. Managers who receive most of their income in the form of dividends subject to flat tax (12.8% of IR) are the first to be affected.

Does flat tax apply to non-residents?

Non-residents who receive dividends from French companies are subject to a withholding tax specific, whose rate varies according to bilateral tax treaties between France and their country of residence. The French flat tax does not apply directly in this case. It is essential to verify the applicable treaty provisions in order to avoid double taxation and, where appropriate, to benefit from the tax credit mechanisms provided for by the conventions.

Article written by Guillaume Leclerc, business lawyer in Paris, 34 Avenue des Champs-Elysées