Benefit-in-kind software such as Fleeti collects the data it needs from three main sources. The vehicle contract provides the purchase value or annual lease cost, age and financing method. Telematics or manufacturer data provides total mileage and the business/personal split. The company car policy provides working hours, assignment rules and whether fuel is paid by the employer. The engine applies the 2026 URSSAF scales to these three sources, in parallel under the flat-rate and actual-cost methods, and keeps the more favourable method for each employee. The monthly summary is then exported to payroll software for the social security declaration. To estimate this on your own fleet before full integration, the Fleeti benefit-in-kind simulator applies the 2026 URSSAF scale in minutes and compares both methods using your parameters.

Fleeti combines three sources to rebuild usage. Manufacturer data from connected vehicles provides total mileage and driving times. The working hours set in your car policy allow automatic pre-classification into business and personal use. The driver confirms or corrects this in two clicks in the mobile app. Trips outside working hours are not tracked, in line with CNIL recommendations and the Court of Cassation ruling of 9 January 2025. Supporting documents are time-stamped and archived for five years, valid as evidence in an URSSAF audit.

Fleeti has native connectors with Sage, Pennylane, Silae and Cegid, which cover most accounting firms and in-house payroll teams in France. Exports are also available in CSV and Excel, which can be imported manually into any payroll software. A DSN XML file is generated for direct inclusion in the French monthly social security declaration. Each monthly summary is produced by vehicle and employee, with the flat-rate amount, actual-cost amount, chosen method and supporting documents.

There are three cases depending on powertrain and vehicle age. For recent vehicles with an OEM manufacturer connection (Stellantis, Renault, Volkswagen, Mercedes, BMW and others), Fleeti connects directly with no hardware installation. For older vehicles, an add-on device can be plugged into the OBD port in a few minutes. For recent leased vehicles, leasing company data may be enough if the leasing companies are integrated (Arval, Ayvens, Alphabet). In every case, the driver mobile app remains available to confirm the business/personal split.

Benefit-in-kind software must produce a verifiable calculation and rebuild every amount from the source data, under article L.242-1 of the French Social Security Code, which defines the social contribution base. The scales applied must follow URSSAF changes in real time, including the decree of 25 February 2025 on the new rates. Supporting documents must be archived for five years, the legal period for audits. The business/personal split must be documented as valid evidence, in line with the Court of Cassation ruling of 9 January 2025, which requires employers to justify business use. The DSN export must reflect the benefit-in-kind amount included in the social contribution and income tax base, line by line and employee by employee.