German Income Tax Calculator: Nettogehalt 2025 (Einkommensteuer + Sozialversicherung)

How the Einkommensteuer Grundtarif curve works

Unlike the bracket systems used by the United States or the United Kingdom, Germany applies a smooth polynomial formula to compute income tax. The formula has four zones: a tax-free zone below the Grundfreibetrag (€12,096 in 2025), two progressive zones where the marginal rate ramps smoothly from 14 percent to 42 percent, a high band at a flat 42 percent up to €277,825, and the Reichensteuer band at 45 percent above. The polynomial in the two ramping zones is why a true German tax calculator cannot use simple brackets. The approximation in this tool replaces the polynomial with six brackets calibrated to track the official curve within €15 across the 0 to €100,000 range, which is more than accurate enough for paycheck-level estimates.

The four Sozialversicherung contributions

Krankenversicherung covers public health insurance. The general rate is 14.6 percent of gross, split between employee and employer, so your share is 7.3 percent. Most public Krankenkassen also charge an average Zusatzbeitrag of around 1.7 percent in 2025, half of which (about 0.85 percent) you pay, giving an effective employee share of about 8.15 percent. The contribution ceiling (Beitragsbemessungsgrenze) is €66,150 in 2025; earnings above this do not attract further KV contributions.

Pflegeversicherung funds long-term care. The general rate is 3.6 percent split evenly, so the employee share is 1.8 percent up to the same €66,150 ceiling. Childless contributors aged 23 and over pay an additional 0.6 percent on top of the employee share, which is not yet modelled here.

Rentenversicherung is the public pension contribution. The total rate is 18.6 percent split evenly, so the employee share is 9.3 percent. The contribution ceiling is €96,600 in the West (€89,400 in the East). This calculator uses the West ceiling; an East variant is on the roadmap.

Arbeitslosenversicherung funds unemployment benefits. The total rate is 2.6 percent split evenly, so the employee share is 1.3 percent up to €96,600.

Tax classes and what they change

Your Lohnsteuerklasse (tax class 1 through 6) determines how Lohnsteuer is withheld each month and what allowances are applied. Class 1 covers single filers with no children. Class 2 is for single parents and adds a relief amount. Class 3 is for married filers whose spouse is in class 5 (typically when one earner is dominant). Class 4 is the default for married couples with similar incomes. Class 5 is the counterpart to class 3. Class 6 is for a second or further job. The annual income tax on a given total income is the same regardless of class; the classes change only the monthly withholding pattern. This calculator computes annual tax on the Grundtarif (class 1 or 4) curve.

What this calculator does not include

Splittingtarif for married joint filing (which doubles the brackets effectively, lowering tax for couples with uneven incomes). Kirchensteuer of 8 or 9 percent of income tax for confessional members, varying by Land. Solidaritätszuschlag of 5.5 percent of income tax above the high-earner threshold (most earners are exempt now). The Pflegeversicherung surcharge for childless members 23 and over. Werbungskosten and other Anlagen-N deductions. Foreign-source income or Doppelbesteuerungsabkommen relief. For most single PAYE employees the figures here track Lohnsteuer und Sozialversicherung Bescheinigungen closely, with the polynomial-approximation error well under €30 for typical incomes. A future enhancement will implement the exact Steuerformel from the Einkommensteuergesetz, plus a Splittingtarif input for married joint filers and a Kirchensteuer toggle by Land.