German Tax Classes Explained: Steuerklasse 1 to 6 (How to Optimize Your Monthly Take-Home Pay)

Every German payslip has a small Roman numeral on it: your Steuerklasse (tax class). It is the setting your employer uses to calculate how much wage tax (Lohnsteuer) to withhold from your gross salary each month, together with the electronic wage tax characteristics (ELStAM) the Finanzamt stores for you. It is not a life sentence, it is not a tax-optimisation trick, and it does not change how much income tax you owe for the year — it changes how much is deducted in advance. This guide walks through all six classes, the special cases most expats miss, and the exact ELSTER process for changing class as a married couple. Figures are stated for the 2026 tax year; always confirm current values with the Federal Ministry of Finance (BMF) or your Finanzamt for your individual case.

What Your Steuerklasse Actually Controls: Withholding, Not Final Tax

Germany collects income tax from employees in advance, through monthly withholding on the payroll. Your employer applies the wage tax tables for your class, plus surcharges (Solidaritätszuschlag and, if you registered a church, church tax), and passes the money to the tax office. At the end of the year, the actual income tax is calculated on your full circumstances — all income, deductions, allowances — in the annual tax assessment (Steuererklärung or Veranlagung). If too much was withheld you get a refund; if too little, you pay the difference.

This is the single most misunderstood point for expats: switching class can raise or lower your monthly net pay, but it does not create or destroy annual income tax. A couple in class III/V with one high earner gets more net each month than the same couple in IV/IV — and then settles the difference in the annual return. If a blog or forum promises that a Steuerklassenwechsel "saves tax", it is describing a timing effect, not a tax cut.

The Six German Tax Classes at a Glance

Steuerklasse I: The Default for Single Arrivals

Class I is where most expats start. It applies to unmarried employees, to divorced people, to widowed people once the transitional class-III treatment ends, and to married people who are permanently separated from their spouse. Withholding follows the standard tax table: the basic allowance (Grundfreibetrag) — €12,348 for a single person in the 2026 tax year, up from €12,096 in 2025 — stays tax-free, and child-related relief is applied through the employer only if you have arranged it. If your only income is one salary in class I and you have no other wages, filing a tax return is usually voluntary — though for most employees it pays, as our line-by-line payslip guide explains.

Steuerklasse II: Single Parents (Alleinerziehende)

Class II is not automatic — you must apply for it. It belongs to single parents (Alleinerziehende) who run their own household together with at least one child for whom they receive the child allowance or child benefit (Kindergeld). The point of the class is that the relief amount for single parents (Entlastungsbetrag für Alleinerziehende) — €4,260 per year since 2023, plus €240 for each additional child — is already taken into account in the monthly withholding instead of only in the annual return.

• You live alone with the child in one household — a partner registered at the same address generally disqualifies class II.
• The child is entitled to child benefit or the child allowance, and the household is your and the child's main residence.
• You apply for class II yourself (via ELSTER or on paper to the Finanzamt) — it is never assigned automatically, and it can be revoked if the conditions end.
• Class II does not change your final tax: the relief amount is available to single parents in the annual return even in class I. The class only brings it forward into the monthly payslip.

Steuerklasse III and V: The Married Combination With a Catch

Married couples (and, since 2017, registered civil partners) where both are subject to German wage withholding can choose between III/V, IV/IV and IV/IV with a factor. In the III/V combination, the higher-earning spouse takes class III and the other takes class V. Class III applies roughly double the class-I allowances, so the main earner's monthly withholding drops sharply; class V applies no basic allowance and steeper rates, so the smaller salary is withheld heavily. The result is a higher combined net pay each month for couples with very unequal incomes — and, for couples with roughly equal incomes, a lower net than IV/IV.

A persistent myth says you need a fixed split — often quoted as "60% of household income" — to be allowed into III/V. There is no such rule. The choice of class combination is free for qualifying couples; the income split only decides whether III/V is financially sensible, because the annual settlement evens everything out. What III/V definitely does is trigger the mandatory annual return: if both spouses receive wages and are in III/V (or one is in V alone), the Finanzamt must assess you — you cannot skip the Steuererklärung.

If both of you earn and you want the higher net of III/V without the lopsided withholding, the factor method below is the officially recommended middle way. The BMF and the tax administration have pointed couples toward IV/IV with a factor for years precisely because it matches withholding to the real joint tax rate.

Steuerklasse IV/IV and the Factor Method (Faktorverfahren)

IV/IV is the default for married couples: each spouse is withheld exactly like a single person in class I. For couples with similar salaries it is usually the most accurate combination. For couples with unequal salaries, plain IV/IV over-withholds compared with the real joint tax — and that is what the factor method fixes. With the Faktorverfahren, you apply jointly with your actual annual gross salaries, the Finanzamt calculates the ratio of your real joint income tax to the sum of the individual class-IV taxes, and both payslips then apply that factor. Each partner's withholding matches their true share of the joint tax, so there is no large settlement payment and no interest surprise.

• IV/IV with a factor requires a joint application with both spouses' annual gross wages — the factor is recalculated when you change it.
• Like III/V, the factor method makes the annual tax return mandatory when both spouses receive wages.
• The factor never changes your total tax — it distributes the same joint liability more accurately across the twelve months.

Steuerklasse VI: Second and Further Concurrent Jobs

Class VI is assigned automatically to any employment you hold in addition to your main job — a second, third or further concurrent employment. The employer of the additional job withholds at the highest rates, with no basic allowance and no child relief, because your allowances are already used up in the main job's payroll. Class VI is not about "multiple income streams" in general: rental or investment income does not put you in class VI, and the class says nothing about your final tax — the annual return sorts out whether the heavy withholding was too much.

Special Cases: Separation, Widowhood and Civil Partnerships

• Permanently separated spouses are treated like singles: class I, or class II if the separated parent meets the single-parent conditions.
• Widowed employees keep class III temporarily — for the month of the spouse's death and the two following months, and, if the spouse died in the first half of the year, into the following calendar year — before moving to class I.
• Registered same-sex civil partners (Lebenspartnerschaft) have been treated like married couples for tax purposes since 2017, including the III/V, IV/IV and factor options.
• A spouse living abroad who is not subject to German wage withholding does not take class V — the partner in Germany can then be in class III.
• Marriage, divorce and death change your class automatically through the electronic wage tax characteristics (ELStAM) once registered — you only apply yourself for the married class combinations and class II.

How to Change Your Tax Class: The ELSTER Process Step by Step

Married couples can change their class combination once per calendar year. The joint application runs through the official tax portal at elster.de; alternatively you can file the paper form with your local Finanzamt. The change applies from the beginning of the month after the application is processed, and to take effect within the current calendar year it must be applied for by 30 November. Work through the five steps below.

1. 01

   Decide the target combination with real numbers

   Model your joint annual gross salaries under III/V versus IV/IV with a factor. Remember the outcome is identical for the year as a whole — you are choosing the monthly cash-flow shape, not the tax bill. A net income calculator (like the one in our tools hub) gives you a first estimate of how each class changes the monthly payslip.

2. 02

   Log in to ELSTER together

   Both spouses open the official portal at elster.de and use the joint application "Antrag auf Steuerklassenwechsel bei Ehegatten/Lebenspartnern". Since 2020 the change is requested jointly online — one application covers both of you.

3. 03

   Enter both tax IDs and details

   The application needs both spouses' tax identification numbers (Steuer-Identifikationsnummer) and dates of birth, plus the desired class combination. For the factor method you also enter both annual gross salaries so the Finanzamt can compute the factor.

4. 04

   Submit and confirm

   Submit the application electronically (or sign and post the paper form to your Finanzamt). The tax office checks the data against the electronic wage tax characteristics (ELStAM) and updates them — no separate certificate is mailed to you.

5. 05

   Tell your employers and watch the first payslip

   The new class applies from the start of the month following the application. Your employers pull the updated ELStAM automatically, but confirm the change landed — the class on the next Lohnsteuer line is your proof. If you applied by 30 November, the new class still applies for December of that year.

Income Tax vs. Social Contributions: What the Steuerklasse Does Not Touch

The Steuerklasse only governs the income-tax block on your payslip. Social contributions — statutory pension, health, long-term care and unemployment insurance — are calculated from gross salary under their own rules and ceilings, completely independent of your tax class. That is why two colleagues with the same gross salary but different classes see different Lohnsteuer lines and identical social-contribution lines. To see how the health and care lines are built, including the 2026 contribution ceilings and the employer share, use our GKV vs. PKV calculator; to decode every other line, read the payslip guide.

Frequently Asked Questions