Salary: Gross ↔ Net (Educational)

1) Definitions

• Gross: salary before income tax.
• Net: salary after estimated income tax.
• The number of months per year is adjustable (default 12).

2) Assumptions

• This tool is for learning and quick “what‑if” estimates only.
• It does not include social security, pension, health insurance, or any country-specific deductions.
• The amount field is per month; annual values are calculated as amount × months per year.
• Numbers accept both “,” and “.” as decimal separators.
• All calculations run in your browser; we do not send your salary inputs to the server.

3) Formulas

• Flat tax: net = gross × (1 − r) and gross ≈ net ÷ (1 − r).
• Example progressive: annual tax = 13% up to the threshold + 15% on the rest (educational example only).

4) Sanity check

In flat‑rate mode, net pay is (1 − tax rate) times gross pay. You can try a small round number (for example 1,000) to see how much is removed by the chosen rate.

5) Disclaimer

This is not tax advice. Always use official payroll tools or consult a professional for actual salary calculations.