French Income Tax Return Deadline Dates Published

If you lived in France in 2025 and earned income or gains, including dividends from shares and investments, during that financial year, you are required to submit your annual tax return.

If you were resident outside of France for tax purposes, you may be subject to French tax in relation to French income and gains. 

The reporting system has been updated, and now online reporting is mandatory if your home is connected to the internet.

Who Needs to Submit an Income Tax Return?

French residents must report their worldwide income and capital gains to the French tax authorities each year via self-assessment. Non-residents are subject to French income tax on their French income and capital gains only.

Online filing is mandatory for homeowners connected to the internet, and they can file their tax return online. The tax liability is increased by 0.2%, with a minimum penalty of €60, for those who fail to declare online without any valid reasons.

You may file your self-assessment income tax return and real estate wealth tax return online via your personal “espace particulier” on impots.gouv.

What is the Deadline Date?

The deadline to file the 2026 self-assessment tax return varies depending on whether you are filing on paper or online.

• For paper tax returns, the filing deadline is 19th May 2026
• For online returns, the following deadlines apply:
• Non-residents – 21st May 2026
• Residents of department 01 to 19 – 21st May 2026
• Residents of departments 20 to 54 – 28th May 2026
• Residents of departments 55 to 974/976 – 4th June 2026

If You Don’t Have Internet

If you don’t have access to the internet, you can use a paper form to submit your tax return. Paper tax returns are only available for taxpayers who are unable to file their tax declaration online.

Wealth Tax in France

France also taxes real estate wealth. Taxpayers are liable to the real estate wealth tax if the net market value of their taxable real estate exceeds €1.3m as of 1st January.

In this respect, non-French tax residents are only taxable on properties in France, whilst French residents are taxable on their worldwide properties. The above filing deadlines also apply to real estate wealth tax returns.

For Expert Tax Advice

Our UK based legal experts specialise in taxation, wealth tax, succession, etc… They have extensive knowledge of the French tax system, please contact François Mouniélou at RWK Goodman who will be delighted to assist, including American citizens in France.

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