About IK-Expert
⚠️ Unofficial application — IK-Expert is not developed by the French Public Finances Directorate (DGFiP) or any other government entity. The rates used are based on the official rates published on impots.gouv.fr (https://www.impots.gouv.fr).
IK-Expert is the essential tool for calculating your mileage allowance (IK) according to the official DGFiP rates.
Whether you are an employee declaring your actual expenses or self-employed, IK-Expert allows you to accurately estimate the deductible amount for your business trips.
MAIN FEATURES
• Official 2026 tax rates published by the French Public Finances Directorate General
• Coverage for all vehicles: cars, motorcycles, and mopeds
• Automatically applied 20% electric vehicle bonus
• Precise differential calculation: each trip displays its marginal amount
• Commuting management with justification required for trips over 40 km
EXPORT AND SHARING
• Generate a professional A4 PDF summary
• Export your data as a CSV file for your spreadsheets
• Export to Excel (.xlsx) with full formatting (Premium)
• Easily share your documents via email or messaging
SIMPLE AND CONFIDENTIAL
• Clear and intuitive interface
• All your data remains on your device; nothing is sent over the internet
• No account creation or registration required
IDEAL FOR
• Employees opting for actual expenses (box 1AK)
• Freelancers and self-employed professionals
• Accountants and payroll managers
• Anyone traveling for business
FREE AND PREMIUM VERSION
The free version allows you to manage up to 5 trips with PDF and CSV export. Upgrade to Premium with a single purchase to unlock unlimited trips and Excel export.
Disclaimer: IK-Expert is a calculation aid. The amounts displayed are estimates and do not constitute tax advice. The user remains solely responsible for their tax return.
