Income tax filling 2026: estimate how much you will pay
Tax filling 2026. The 2026 income tax campaign, covering 2025 earnings, will open on April 9, 2026. From this date, taxpayers will be able to access the official online platform to submit their annual income tax declaration.
Filing is mandatory for all residents, even if you had very low income or no income during the year.
Use the official tax simulator for 2026
Before the declaration period opens, you can already access the official 2026 tax simulation tool based on 2025 income. This tool helps you estimate:
- The approximate amount of income tax you may owe
- Your reference tax income
The simulation is based on the updated tax brackets, each linked to a specific tax rate. It provides a useful early overview of your future tax situation.
Important: the simulator is only available for people who live in France.
Two versions of the simulator:tax filling 2026
Depending on your situation, you can choose between two calculation modes:
Simplified simulator
This version is designed for people with straightforward income situations, such as:
- Salaries or pensions
- Common deductible expenses, including:
- Child support payments
- Childcare-related expenses
- Donations to associations or public-interest organizations
Full simulator
This version is intended for more complex financial profiles, including:
- Commercial, professional, or agricultural income
- Investments located in overseas territories
- Overall deficits and other specific tax situations
Important filing information:tax filling 2026
The deadline for submitting your tax return is not the same for everyone. It depends on:
- Your department of residence
- Whether you file online or on paper
