Finance & budget: tools, guides and useful answers
Keep a clear view of your numbers without jargon. Tools, guides and questions help you calculate, compare and decide with more confidence.
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Tools & Calculators
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Margin Calculator
Calculate your gross margin, markup rate and check product profitability in seconds.
Micro-enterprise net income calculator
Estimate how much remains after French micro-enterprise contributions, optional tax payment, business expenses and a safety margin.
Budget & savings calculator
Enter your salary and expenses to see if your lifestyle is sustainable. Compare your split against the 50/30/20, 60/20/20, 70/20/10 and 80/20 methods to save smarter.
Savings vs inflation: the real value of your money
Compare the balance shown by your bank with its real value after inflation. Capital, monthly contribution, account rate, taxation and duration: see what your savings will really be worth.
French real expenses tax calculator
Calculate your French real expenses for tax purposes: working days, commute mileage, deductible kilometers, tolls, parking and comparison with the automatic 10% deduction.
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Guides & Tutorials
Understand the basics before taking action.
How to calculate real expenses for French taxes: complete method
A simple method to calculate French real expenses: working days, commute mileage, the 40 km rule, meals, supporting documents and comparison with the automatic 10% deduction.
Calculate Your Net Salary: What You Actually Take Home
Got a job offer with an attractive gross salary? Learn how to calculate your real take-home pay, understand deductions, and know exactly what you’ll get each month.
Handling group expenses without conflict: the BBQ story
Discover how to manage group expenses without creating tension. Through the story of a BBQ with friends, learn how to calculate who owes what and make repayments simple.
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Practical questions
Find a short answer to common questions.