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.
Savings and inflation: how to know if your money is losing value
Your bank balance can rise while your purchasing power falls. This guide explains how to compare savings, inflation, net rates and real value using 2026 data.
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.
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Practical questions
Find a short answer to common questions.