During February 2025, Phunkybob updated tax parameters in the openfisca/openfisca-france repository to support the 2025 income tax declaration. The work focused on adjusting 2024 income year parameters, including updating the validity date for income tax brackets and revising maximum and minimum deductions for professional expenses to reflect new regulations. Using YAML for data management, Phunkybob ensured the system remained compliant with evolving taxation rules. The changes streamlined tax calculations for end users and reduced manual intervention. While the scope was limited to a single feature, the update demonstrated careful attention to regulatory alignment and accurate parameterization within the codebase.