How to Know Your Tax Number in France: A Complete Guide
/in Blog /by escecIf you need to access your tax information or complete tax-related procedures in France, knowing your tax number is essential. The French tax authorities provide multiple ways to retrieve and manage your tax number through the official impots.gouv.fr website. This guide explains how to locate, retrieve, and use your tax number efficiently.
Accessing Your Personal Tax Account
The impots.gouv.fr website offers two methods to log in to your personal tax account:
- Using your impots.gouv.fr login credentials
- Logging in via FranceConnect (a government-backed authentication service)
Why Do You Need to Log In?
Your tax account contains sensitive personal data, which is why access is secured. Each member of a tax household has an individual login to manage and consult tax information, including income tax declarations and payments.
How to Find Your Tax Number in France
What Is a Tax Number?
Your tax number (numéro fiscal) is a unique 13-digit identifier necessary for all tax-related processes in France. You will find it on various official documents, including:
- The first page of your most recent income tax return
- Tax assessment notices for income tax, property tax, or residence tax
How to Retrieve Your Tax Number
If you have an account but lost your tax number, follow these steps:
- Visit impots.gouv.fr and go to the help section.
- Click on “Où trouver votre numéro fiscal ?” (Where can I find my tax number?).
- Select “Recevoir votre numéro fiscal par courriel” (Receive my tax number by email).
💡 Tip: Always keep your tax number stored safely, as you will need it every time you log in.
Understanding Your Online Access Number
Your online access number appears on the first page of your most recent income tax return. It also appears on correspondence received from tax authorities, particularly if:
- You turned 20 years old and are filing your first return independently.
- Your spouse created a separate tax account.
Since this number changes each year, make sure to use the most recent one when accessing your account.
Finding Your Base Taxable Income
Your base taxable income is an important reference and is located:
- On the cover page of your most recent tax assessment notice in the section “Vos références” (Your reference numbers)
- Under “Renseignements complémentaires” (Other information), in case of special circumstances (e.g., tax relief notices)
Special Case: If you were included in your parents’ tax household, enter “0” in the base taxable income field when prompted.

How to Know Your Tax Number in France ? Creating Your Personal Tax Account
If You Are Liable for Income Tax or an Adult in a Tax Household
To create your tax account, you need:
- Your tax number
- Your online access number
- Your base taxable income
Alternatively, you can use FranceConnect to log in via partner services such as AMELI, La Poste’s Identité Numérique, MobileConnect et Moi, or MSA.
If You Have a Tax Number but Do Not Pay Income Tax
If you only pay residence tax or property tax, you can log in via FranceConnect or verify your identity through:
- Your local tax office (in person)
- The online contact form on impots.gouv.fr
Once verified, you will receive an email allowing you to create your personal account.
If You Do Not Have a Tax Number
You must confirm your identity by visiting your local tax office or completing an online verification form. Once approved, you will receive your tax number and can create your account.
How to Know Your Tax Number in France: Managing Your Tax Account
Changing Your Email or Password
To update your login details:
- Log in with your tax number and current password.
- Click on “Mon profil” (My profile).
- Update your email address, password, or phone number.
- Confirm changes via the verification email.
What to Do If You Get an Error Message
Incorrect Log-in Details
- Check that your tax number is entered correctly.
- If issues persist, contact your local tax office.
Identity Verification Required
- If prompted, provide proof of identity at your local tax office or use FranceConnect to log in.
Technical Issues
- If your tax number has been deactivated, you must request a new one from your local tax office.
How to Know Your Tax Number in France: Accessing Your Tax Account on Mobile
Using the Impots.gouv App
- Download from the App Store or Google Play.
- Log in using FranceConnect or your tax details.
Logging in via FranceConnect
FranceConnect is a secure system allowing users to access multiple government services with a single login. To use it:
- Click on the FranceConnect icon.
- Choose a partner account (e.g., AMELI, La Poste, MSA).
- Enter your existing partner login details.
If it’s your first time using FranceConnect, you must first create an account on impots.gouv.fr.
Troubleshooting FranceConnect Issues
If you receive an error stating, “You cannot currently log in using FranceConnect”, it may be due to incomplete civil status data or the absence of a tax number. In this case, contact your local tax office for assistance.
Final Thoughts: Get Professional Tax Assistance
Navigating the French tax system can be complex, especially for new taxpayers. If you need assistance with tax compliance, account setup, or resolving tax-related issues, visit www.escec-international.com. Our experts provide tailored guidance to ensure your tax matters are handled smoothly and efficiently.