Tax Measures of the New Popular Front: Income Tax Bracket, Return of the ISF, and CSG Impacts

• Table of Contents
• The new income tax scale: moving towards 14 brackets for greater progressivity
• Tax progression: how the Nouveau Front Populaire intends to strengthen fiscal equality
• Return of the Wealth Solidarity Tax (ISF): issues and perspectives
• The reform of the Generalized Social Contribution (CSG): a major step toward progressivity
• Economic and redistribution consequences of proposed fiscal measures
• Upcoming parliamentary debates: obstacles and implementation strategies
• Comparison with other political programs on taxation
• Public finances outlook in light of the NFP’s new measures
• FAQ: essential questions about the tax scale, ISF, and CSG

The new income tax scale: moving towards 14 brackets for greater progressivity

For several years, the French tax system has been the subject of lively debate regarding its progressivity and its relevance to current economic challenges. The Nouveau Front Populaire (NFP) proposes a major overhaul of the income tax scale, shifting from a system with 5 brackets to one with 14 distinct brackets. This measure aims to increase progressivity — that is, the degree to which tax is adapted to taxpayers’ ability to pay — and to better distinguish different income categories.

In practice, a new 14-bracket scale would smooth out the increase in tax burden, instead of abruptly jumping from one bracket to another, thus reducing the so-called “threshold effect” that impacts some taxpayers. For example, currently, exceeding the 41% bracket threshold can lead to a significant increase in the marginal tax rate. With 14 brackets, this transition would be more gradual, with several intermediate levels, especially for higher incomes.

One proposal, sometimes discussed publicly, involves a maximum tax rate of up to 90% on the highest incomes, exceeding approximately 400,000 euros per year. This rate would then combine income tax and social contributions (CSG), giving an overall picture of the tax burden on very high incomes. This idea, far from being fixed, illustrates the intent to substantially increase the marginal rate on ultra-high salaries, particularly in a redistributive logic.

The specifics of this mechanism are not yet officially defined, which leads us to refer to the general intentions of the NFP and previous draft amendments. Another key challenge is maintaining a significant exemption threshold for lower incomes, to ensure that no household earning less than about 4,000 euros per month is penalized further by this reform.

• Increase in the number of tax brackets
• Refinement of intermediate rates between 0% and high rates
• Possibility of a marginal rate exceeding 45%, up to around 90% with CSG
• Maintaining strong exemptions for low incomes
• Goal: to enhance fiscal equality and real progressivity of the tax

A comparative table between the current and future scales might look like this:

Current brackets (5)	Current rate	Proposed brackets (14)	Estimated rate
Up to €10,777	0%	Up to €11,000	0%
€10,778 – €27,478	11%	€11,001 – €18,000	5% – 10%
€27,479 – €78,570	30%	€18,001 – €40,000	15% – 25%
€78,571 – €168,994	41%	€40,001 – €200,000	30% – 45%
€168,995 and above	45%	€200,001 and above	45% – 90% (including CSG)

Once adjusted, this scale will need to undergo a thorough impact study to evaluate its actual effect on the public finance and overall economic policy.

Tax progression: how the Nouveau Front Populaire plans to strengthen fiscal equality

The main objective of the Nouveau Front Populaire regarding taxation is to emphasize fiscal equality and social justice through a profound reform of the system. This vision is based on the principle that each citizen should contribute according to their capacity, which involves greater progressivity of various taxes.

Their proposals highlight two main balances:

• Combating inequalities by taxing higher incomes and assets more heavily
• Relieving the fiscal pressure on working and middle classes

This approach includes the elimination or significant adjustment of mechanisms perceived as inefficient or unjust, such as the flat tax on capital income, introduced in 2018 at 30% (social charges included). The plan is to revert to a principle of taxing savings income according to the progressive income tax scale.

Specifically, this means that income from financial investments — dividends, interest, capital gains — will be calculated as ordinary income and taxed according to the various brackets, potentially leading to a higher tax burden for wealthier taxpayers, while benefiting from exemptions or reduced rates for modest income earners.

• Elimination of the 30% flat tax on savings income
• Inclusion of financial income in the progressive income tax scale
• Increase of overall fiscal progressivity
• Targeted exemptions for small savers
• Strengthening of fiscal equality

These measures represent a fundamental change in the way resources are collected and redistributed, with the goal of creating a more equitable society. However, this raises questions about the effects on investment, especially in life insurance and savings products, which currently benefit from favorable tax regimes. For more information on life insurance taxation, you can consult this relevant link on the taxation of life insurance.

Current tax	Modalities	NFP Proposal	Expected impact
Flat tax of 30%	Uniform taxation on capital income	Integration into the progressive scale	Greater progressivity and fiscal justice
Partial exemption for low incomes	Limited	Maintaining and expanding exemption	Protection for small savers
5 income tax brackets	Simple scale	14 finer brackets	Reduced threshold effect, better adaptation

Return of the Wealth Solidarity Tax (ISF): issues and perspectives

Another major aspect of the tax reform envisioned by the Nouveau Front Populaire is the reinstatement of a strengthened wealth tax, commonly called the ISF. Abolished in 2018 and replaced by the real estate wealth tax (IFI), this reform would aim to bring financial assets and certain luxury goods back into the tax base, which had been excluded.

The return of the ISF reflects a declared will to target patrimonial inequalities, as the partial abolition of this tax reduced fiscal contributions from the wealthiest, widening wealth gaps. The NFP plans to go further by creating new taxation brackets graduated based on overall asset values.

• Reintegration of financial assets into the tax base
• Creation of new brackets to strengthen progressivity
• Introduction of an ecological component, aiming to direct taxation towards sustainable assets
• Targeting the wealthiest taxpayers with marked redistributive effects

Beyond fiscal objectives, this reform is part of a broader economic vision where the ISF becomes a lever to promote the ecological transition through differentiated taxation based on the environmental impact of assets. This raises questions about the specific modalities of this “greenification” of the ISF, whose details have not yet been announced but could play a strategic role in funding sustainable development projects.

The acceptance or rejection of the return of the ISF will send a strong signal regarding commitment to fighting inequalities, although this topic is subject to vigorous debate, including within the National Assembly. The Rally for the Republic (Rassemblement National), having joined the debate with a similar stance, adds further complexity to parliamentary interactions.

Old ISF	Current ISF (IFI)	NFP Proposal	Expected effects
Global taxation of assets	Property taxation only	Reintegration of financial assets and luxury goods	Increased revenue and redistribution
Single rate scale	Simple property scale	Enhanced bracketing with ecological component	Promotion of ecological transition
Stabilizing income effect	Drop in public revenue	Rebalancing inequalities	Better fiscal justice

The reform of the Generalized Social Contribution (CSG): a major step toward progressivity

The CSG, introduced in 1991, is currently a social tax with various modalities depending on income, but largely proportional, especially on wages. The Nouveau Front Populaire proposes to make it a truly progressive tax, complementing the reform of the income tax scale.

This demand is not new, but it now seems to be a priority in the NFP program. In practice, the CSG would progress through multiple brackets, adapting to income levels, especially for wages. This could ease the fiscal burden on modest households while increasing it for high-income earners outside patrimony.

• Transforming the linear CSG into a progressive tax
• Creating a multi-bracket scale (initially 14 brackets considered)
• Better coordination with income tax
• Reducing pressure on working and middle classes
• Increasing the burden on high wages and financial incomes

The exact mechanism remains to be defined, especially the income thresholds and corresponding rates. Although some simulations are outdated, they suggest possible alignment with the income tax schedule to simplify the fiscal structure while making it fairer.

These modifications could notably impact social contributions deducted from wages and pensions, requiring careful attention. For a better understanding of the role and planned transformation of this tax, several resources detail the current rules in the existing context: inheritance taxes, modified CSG.

Current CSG	NFP Proposal	Potential effect
9.2% on wages (linear)	Progressivity by bracket(s)	Relief for low incomes, increases on high incomes
Partial progressivity on pensions	Expansion of progressivity to all	More targeted and fairer
Absence of coordination with IR	Harmonization with IR scale	Simplification and increased transparency

Economic and redistributive consequences of proposed fiscal measures

The implementation of fiscal measures by the Nouveau Front Populaire would have significant effects on the French economy and redistribution system. By enhancing the progressivity of the income tax and the CSG, and by restoring a more comprehensive ISF, the NFP aims to increase public revenues to fund public services, reduce inequalities, and support social policies.

This fiscal strategy should have several consequences:

• Increase in tax revenues: greater progressivity allows higher-income earners to contribute more to the state budget.
• Better redistribution: by increasing taxation on assets and high incomes, mechanisms of solidarity and social justice are strengthened.
• Impact on investment: the removal of the flat tax could hamper capital investment, but discussions are ongoing regarding potential compensatory measures.
• Impact on consumption: improved redistribution could support overall household demand, especially among modest and middle-income earners.
• Change in fiscal structure: the reform strengthens the link between tax and ability to pay, making the system more transparent and equitable.

Beyond these short-term effects, the reform could influence the economic climate in the medium and long term by guiding fiscal and savings behaviors. To better understand these dynamics, some useful resources on taxation and investments in France include this analysis of portfolio management alternatives.

Aspect	Before reform	After reform	Expected effects
Tax revenues	Stable but insufficient	Significant increase anticipated	Enhanced funding for public services
Inequalities	Persistent, significant	Expected reduction	Increased social justice
Investment	Encouraged by low flat tax	Possible slowdown due to higher taxes	Need for compensatory measures
Consumption	Unequally distributed	Increased purchasing power for middle classes	Economic stimulation

Upcoming parliamentary debates: obstacles and implementation strategies

Following the early legislative elections of 2024, the Nouveau Front Populaire emerged as the leading force in a fragmented Assembly. Despite this relative victory, it holds a fragile majority within a chamber divided into several blocs, notably the right, the center, and the far right around the Rassemblement National.

In this context, the pursuit of the NFP’s ambitious tax program faces several challenges:

• The need to negotiate with parliamentary groups with diverging interests
• Low tolerance from some elected officials for significant tax hikes on the wealthy
• Concerns about the economic impact of certain measures, particularly on investment and growth
• Social acceptance and communication regarding tax reforms

Members of La France Insoumise (LFI) and their allies will need to develop legislative strategies to advance their measures, especially the upcoming amended finance bill announced for early August, which should lay the groundwork for reforms of CSG, income tax, and ISF. It should be noted that some aspects of the program remain to be clarified, particularly the exact brackets and thresholds.

The debates are expected to be intense, involving discussions around the flat tax, the return of the ISF, and savings taxation, with arguments focusing both on economic efficiency and social justice. Their impact on public finance and the sustainability of measures will be closely scrutinized by all stakeholders.

Budget 2025 : les 4 mesures fiscales qui vont faire tanguer l’Assemblée https://t.co/dQ6ZVTIjB0 – via Le Parisien

— Verier Vincent (@VincentVerier) October 21, 2024

Comparison with other political platforms on taxation

The analysis of Fiscal measures proposed by the Nouveau Front Populaire invites comparison with those of other French political forces to better understand the major differences.

Some parties continue to advocate for the flat tax or a more limited taxation of assets, while others, such as the Rassemblement National, now support a return to the ISF, which complicates the landscape.

• Right and center parties: generally favor moderate taxation, protection of investment and capital incentives.
• Rassemblement National: advocates for the return of the ISF, with a sovereigntist and protectionist orientation.
• Green and socialist parties: strongly support progressivity, green taxation, and social justice.

Within this framework, the NFP adopts a more radical stance on increasing taxes on higher incomes and assets, aiming to offer an ecological and social alternative to previous economic policies. For a detailed analysis of the proposals discussed by the NFP and their fiscal implications, you can consult this interesting article on the NFP’s program.

In summary, the proposed measures of the NFP are part of an essential debate on the French economic and social model, reflecting a clear desire to strengthen redistribution through taxation.

Public finance outlook in light of the NFP’s new measures

The array of fiscal measures proposed by the Nouveau Front Populaire will bring about significant changes to the dynamics of French public finances.

Tax revenues would increase thanks to:

• A strengthened fiscal policy on high incomes and assets
• More rigorous taxation of capital income according to the progressive scale
• Better progressivity of the CSG

These additional resources are intended to finance:

• Essential public services
• Social policies and ecological transition
• Combatting poverty and inequality

However, the budgetary balance remains delicate, especially considering potential risks of discouraging private investment and political resistance. The net impact on growth will be a key factor to monitor in the coming months, along with the timetable and effective implementation within the National Assembly.

The upcoming debates around the fiscal program and the amended finance bill scheduled for August 4, 2025, will be decisive for the economic outlook. The tight schedule and complexity of the issues require increased vigilance.

Financial Aspect	Before reform	After reform	Expected consequences
Tax revenues	Tight budget	Significant increase	Potential for increased public spending
Social expenses	Growing pressure	Improved funding	Better support for vulnerable populations
Private investment	Relatively dynamic	Possible slowdown	Need for compensatory measures
Support for ecological transition	Moderate	Enhanced via ecological ISF	Sustainable positive effects

FAQ: essential questions about the tax scale, ISF, and CSG

• What is the 14-bracket tax schedule proposed by the Nouveau Front Populaire?
  It involves increasing the number of brackets in the income tax system to make taxation more progressive, by spreading out rates and potentially raising the maximum marginal rate.
• Why is the return of the ISF important to the NFP?
  To restore fiscal justice by including financial assets, which had been excluded since the transformation into the IFI, and to introduce an ecological component into taxation.
• How will the CSG be modified?
  The CSG, currently proportional on wages, will become progressive with the introduction of brackets based on income levels.
• What is the expected timeline for these reforms?
  An amended finance bill should be submitted around August 4, 2025, to initiate these changes.
• What will be the impact on public finances?
  These reforms are expected to increase tax revenues to better fund public services and reduce inequalities, despite potential risks to investment.