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#gross net calculator #salary #net income #income tax #social security 3 min

Gross-Net Calculator: How Much of Your Salary Remains

Understand how a gross salary of €4,000 is converted to net pay. We explain deductions for taxes and social security step by step.

Deutsche Version verfügbar — auf Deutsch lesen.

Inhaltsverzeichnis
  1. How net salary is calculated
  2. Walk‑through calculation for €4,000 gross
  3. Tax class I vs. IV explained
  4. Using the online calculator effectively

This article explains how a monthly gross salary of €4,000 translates into net pay and which factors influence the result.

How net salary is calculated

The transformation from gross to net pay consists of three steps: 1) calculate wage and income tax according to the employee’s tax class, 2) add church tax and the solidarity surcharge where applicable, 3) deduct the statutory social‑security contributions (pension, unemployment, long‑term care, and health insurance). The health‑insurance rate combines a statutory base of 14.6 % with a supplemental contribution set by each insurer – a common supplemental rate is 2.9 %, resulting in a total of 17.5 % .

Walk‑through calculation for €4,000 gross

Assume a gross salary of €4,000 and a taxpayer in tax class I (single, no children). Using the tax tables, the income tax amounts to roughly a certain figure. The solidarity surcharge no longer applies to many earners, so it can be omitted. If the employee is not subject to church tax, that component is also zero.

Social‑security contributions are split equally between employer and employee. The employee’s share is:

  • Pension insurance: a certain percentage → a certain amount
  • Unemployment insurance: a certain percentage → a certain amount
  • Long‑term care insurance: a certain percentage → a certain amount
  • Health insurance (including supplemental contribution): a certain percentage → a certain amount

These contributions total about a certain amount. The net salary therefore is:

€4,000 − Taxes − Social contributions ≈ a certain amount.

When the supplemental health‑insurance contribution is set to 2.9 % and the same contribution shares are used, the Finanzfluss Brutto‑Netto‑Calculator for 2026 returns a net figure of roughly a certain amount . The difference stems from the precise rounding of the contributions and the current income‑tax calculation.

Tax class I vs. IV explained

Tax class I applies to single employees without children and is a common class. Tax class IV is intended for married couples whose incomes are roughly equal. In that situation the tax burden is comparable to class I because the basic allowances and progression zones are identical . For single individuals tax class IV is not applicable.

The health‑insurance supplemental contribution varies depending on the insurer. This range directly influences the net take‑home pay, as a higher supplemental rate increases the employee’s contribution.

A non‑church‑tax‑payer saves a certain percentage of the gross wage, which corresponds to typical church‑tax rates.

Using the online calculator effectively

The Finanzfluss Brutto‑Netto‑Calculator 2026 offers a quick yet detailed computation. Enter the gross salary, tax class, federal state, child allowance, and the chosen health‑insurance supplemental rate. The tool then breaks down the result into tax components, social‑security contributions, and optional church tax .

A practical tip for job seekers: run the calculator before accepting a contract. This gives you an immediate sense of how much of the advertised gross salary will actually be available as net income. Because tax and social‑security regulations are updated each year, always use the latest version of the calculator (e.g., the “2026” edition) to avoid miscalculations .

Try it yourself: Gross-Net Salary Calculator

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