Tax Declaration 2025: Your Complete Guide to Filing Your First Income Tax Return

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Updated January 1, 2025 – Legal and Administrative Information Directorate (Prime Minister)

If you’re preparing for your tax declaration 2025 covering income earned in 2024, this guide provides essential information to ensure a smooth process, especially for first-time filers.

Tax Declaration 2025: Key Updates and Deadlines

This page reflects updates as of January 1, 2025. While the tax declaration 2025 process is set to begin in April 2025, forms, online services, and related documents are not yet available. These will be published as soon as they are ready.

Additionally, the 2025 Finance Bill has not yet been enacted. However, Law No. 2024-1188 of December 20, 2024allows the government to collect taxes without changing brackets until the bill is finalized. If the new Finance Law introduces changes, this page will be updated accordingly following its publication in the Official Journal.

Who Needs to File Their First Tax return in 2025?

If you are 18 or older and no longer part of your parents’ tax household, you may be required to file your 2025 tax declaration under specific conditions.

Born Before 1999?

  • If you’re aged 25 or older, filing your own tax declaration 2025 is mandatory.
  • Even if you are not taxable, submitting a tax return is essential to obtain a certificate of non-taxation, which can be useful for administrative purposes such as applying for scholarships or other social benefits.

How to File Your First Tax return

Step : Receiving a Notice from Tax Authorities

You will receive a notification from the tax office in April if:

  1. You are aged 20 or older.
  2. You were included in your parents’ tax household the previous year.

This letter will contain your fiscal identification number and access code. Use these to:

  • Create your personal tax account online.
  • Choose a secure password.
  • Enter your reference taxable income, which should be €0 if you are filing for the first time.

Access your online tax space to complete your declaration.

Tax Declaration 2025: Deadlines and Submission Methods

  • The 2024 tax declaration for 2023 income has concluded.
  • The 2025 tax return for 2024 income will open in April 2025.

Filing Online

Filing your tax return 2025 online is mandatory if your primary residence has internet access and you are able to complete the process digitally.

Filing by Paper

If you cannot file online, paper declarations for the 2025 tax return will also be available starting in April 2025.

Why Filing Your Tax return Matters

Completing your tax declaration 2025 ensures compliance with legal requirements and provides access to important benefits, such as:

  • Certificates of non-taxation for administrative use.
  • Eligibility for social assistance programs or scholarships.

Stay informed and prepare early to make your 2025 tax declaration seamless and hassle-free. Check back regularly for updates on forms, deadlines, and submission details as they become available.

Contact us for more informations.