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Lohnsteuerklasse Ausbildung: How to Pick the Right Tax Class as a Trainee in Germany

2025-12-12

Confused about Lohnsteuerklasse during your Ausbildung? Learn which tax class applies to you, when switching saves real money, and how marriage or kids change things.

Starting your Ausbildung in Germany is exciting — but your first payslip can be a shock if you don't understand Lohnsteuerklasse. Most trainees are placed in a default tax class automatically, and many overpay taxes for months simply because they didn't know they could switch. Understanding how Germany's six tax classes work — and which one fits your situation — can put real money back in your pocket every single month.

What Is a Lohnsteuerklasse and Why Does It Matter for Your Ausbildung?

A Lohnsteuerklasse (Lohnsteuerklasse) is a category the German tax system uses to calculate how much income tax is withheld from your salary every month. Your employer deducts this amount automatically before you ever see your money — it's called Lohnsteuer (Lohnsteuer).

As an Ausbildung trainee, your monthly training allowance (Ausbildungsvergütung) typically ranges from €620 to €1,300, depending on your sector and state. Even at these amounts, your tax class affects how much you actually take home. Choose the wrong class and you're handing over more than necessary to the Finanzamt (Finanzamt) — sometimes €50–€100 extra per month.

The good news: Germany has a year-end tax return process (Einkommensteuererklärung) where you can reclaim overpaid taxes. But why overpay in the first place when you can optimize your class from the start?

The 6 Steuerklassen Explained

Germany uses six tax classes. Here's a plain-English breakdown:

• Steuerklasse I — Single, separated, divorced, or widowed (after the year of death). No children accounted for in the class itself. This is the default for most single trainees.
• Steuerklasse II — Single parent raising at least one child who lives with you. You receive the Entlastungsbetrag für Alleinerziehende (Entlastungsbetrag für Alleinerziehende), worth €4,260 per year (as of 2024). If you have a child and live alone with them, this class saves you real money monthly.
• Steuerklasse III — Married or in a registered civil partnership, and your spouse earns significantly more than you — or earns nothing. This class has the lowest tax deductions. Commonly paired with Class V for the spouse.
• Steuerklasse IV — Married or in a registered civil partnership, both partners earn roughly similar incomes. Both partners get Class IV by default when they marry.
• Steuerklasse V — The counterpart to Class III. Higher tax deductions. The lower-earning spouse takes this class when the other has Class III.
• Steuerklasse VI — Applied when you have a second job or second Ausbildungsstelle. Highest deductions, no basic allowance (Grundfreibetrag) applied. Avoid relying on this class if at all possible.

The Grundfreibetrag: Your Tax-Free Base

Every person in Germany gets a basic tax-free allowance. In 2024 it stands at €11,604 per year (roughly €967/month). If your total annual income stays below this amount, you owe no income tax at all — and you should get back everything withheld via your tax return. Many first-year trainees earning around €700/month fall into this bracket entirely.

Which Lohnsteuerklasse Applies to Ausbildung Trainees by Default?

When you start your Ausbildung and register with the Einwohnermeldeamt (Einwohnermeldeamt), your tax class is automatically assigned based on your civil status. Here's what you'll get by default:

• Single, no children → Steuerklasse I
• Single parent → Steuerklasse II (but you usually have to apply for this proactively at the Finanzamt)
• Married → Steuerklasse IV / IV (both partners get Class IV automatically)

For most trainees arriving in Germany, the default is Steuerklasse I. This is fine if you're single with no children — it applies the standard deductions and you'll likely get a refund at year-end if your income was below the Grundfreibetrag.

Your tax class data is stored digitally in the ELSTAM system (ELSTAM). Your employer retrieves your class automatically using your tax ID (Steuer-Identifikationsnummer), which you receive by post a few weeks after registering your address in Germany. If you haven't received it, contact the Bundeszentralamt für Steuern (Bundeszentralamt für Steuern) at bzst.de.

How Marriage or Children Change Your Lohnsteuerklasse

If You Get Married During Your Ausbildung

Getting married changes your default class to IV/IV. But if one partner earns significantly more — for instance, your spouse earns €3,000/month from a full-time job while you earn €800/month as a trainee — switching to the III/V combination can be smarter.

With III/V:

• The higher-earning spouse gets Class III (lowest deductions, more monthly take-home)
• You as the trainee take Class V (higher deductions)

Example: If your spouse earns €3,500/month and you earn €850/month, the III/V split could increase the household's combined monthly net income by €150–€250 compared to IV/IV. However, because Class V withholds more from you, you as the trainee will see less monthly. You balance this out at year-end with a joint tax return.

Important: With the III/V combination, filing a joint annual tax return (gemeinsame Veranlagung) is mandatory. Don't skip it.

If You Have Children

Having children doesn't automatically change your class — you still start in Class I. But your employer applies the Kinderfreibetrag (Kinderfreibetrag) to reduce your taxable income. In 2024, the Kinderfreibetrag is €6,384 per child per year (combined for both parents).

If you're a single parent, apply at the Finanzamt for Steuerklasse II proactively. Bring your child's birth certificate, your rental contract showing you live with the child, and your tax ID. This change puts money in your pocket every month — not just at year-end.

When Switching Your Steuerklasse Actually Saves Real Money

You can apply to change your Steuerklasse at your local Finanzamt (Finanzamt) using the form "Antrag auf Steuerklassenwechsel bei Ehegatten" for married couples, or a general tax class change request for other situations. Since 2020, you can also submit changes digitally via ELSTER (elster.de) — Germany's official tax portal.

Scenarios Where Switching Is Worth It

• Single parent: Switching from Class I → Class II saves roughly €30–€80/month depending on your income. Over a 3-year Ausbildung, that's up to €2,880 extra.
• Married trainee with higher-earning spouse: Switching from IV/IV → III/V can optimize monthly cash flow. Run the numbers at bmf-steuerrechner.de (the official Federal Ministry of Finance calculator).
• Two incomes, roughly equal: Stay in IV/IV or consider the IV/IV with Faktor method, which distributes deductions more precisely and avoids a big back-payment at year-end.

When NOT to Switch

• Don't switch to Class III if both partners earn similar amounts — you'll owe a large tax bill in spring.
• Don't accept Class VI passively for a second job if you only have one employer — contact your Finanzamt if there's a data error.

What People Get Wrong About Steuerklassen During Ausbildung

This is where most trainees lose money or create headaches:

• "My class doesn't matter because I'll get it back anyway." Partially true — but overpaying monthly means you're giving the government an interest-free loan. With trainee wages already tight, that €60/month matters.
• "I can't change my class mid-year." Wrong. Since 2020, married couples can switch as many times as they want per calendar year. Singles switching to/from Class II can also do this once per year.
• "I don't need to file a tax return." If you're in Class I with a single income and no special deductions, filing is optional — but almost always results in a refund. In your first year, you may reclaim several hundred euros if you started mid-year.
• "My employer handles everything." Your employer withholds based on whatever class is in the ELSTAM system. If the system shows the wrong class (common after a recent move or marriage), you must correct it at the Finanzamt. Your employer cannot override it.
• "Class III is always better for the lower earner." No — Class V has higher deductions. Class III benefits the higher earner. The trainee (lower earner) in a III/V setup takes home less monthly, not more.

How to Apply for a Steuerklasse Change: Step by Step

1. Identify your current class — check your payslip (Gehaltsabrechnung). It's listed as "Steuerklasse" or "StKl."
2. Determine your optimal class using the scenarios above or the bmf-steuerrechner.de tool.
3. Download the relevant form from your local Finanzamt's website or ELSTER.
4. Submit the form — in person at the Finanzamt, by post, or digitally via elster.de. Bring your tax ID and, if married, your spouse's tax ID.
5. Notify your employer — your employer retrieves updated data from ELSTAM, usually within 1–2 weeks.
6. File your annual tax return — especially mandatory for married couples in III/V, and highly recommended for everyone else.

Changes typically take effect the following month after approval.

Conclusion

Getting your Lohnsteuerklasse right during your Ausbildung isn't complicated once you understand the system — but it's easy to ignore until you realize you've overpaid for a year. Whether you're single and defaulting to Class I, a single parent who should be in Class II, or married and weighing III/V versus IV/IV, taking 30 minutes to review your situation can save you hundreds of euros.

If you're still navigating your first steps in Germany — from your residence permit to your Ausbildung application — don't go it alone. Book a free consultation to learn German and move to Germany successfully, and get expert help building the documents that make your application stand out, starting with your CV builder or cover letter generator.