Change Tax Class in Germany – via Form or Elster 2026

Change Tax Class in Germany – via Form or Elster 2026

You can change your tax class (Steuerklasse) in Germany at any time during the calendar year, and doing it correctly can put hundreds of euros back in your pocket each month. In Wolfsburg in 2025, switching my wife and me from the default Steuerklasse IV/IV combination to III/V before the tax year ended made a noticeable difference to our monthly Nettolohn (take-home pay after income tax and social contributions). It took less than an hour on Elster, Germany’s official online tax portal, and zero trips to the Finanzamt (tax office).

The process itself is handled through the ELStAM system (Elektronische LohnSteuerAbzugsMerkmale, or the electronic wage tax deduction database), which your employer accesses automatically once a change is registered. According to Statistisches Bundesamt (Destatis), in 2025 around 95% of all taxable inheritance and gift transfers in Germany were concentrated in the western federal states, totalling €142.5 billion. Wealth distribution shapes how urgently tax optimisation matters, and for most working expats, Steuerklasse selection is one of the few tools actually within your control.

This guide covers every route to changing your Steuerklasse, whether by paper form (Antrag auf Steuerklassenwechsel) or through Elster, and explains exactly what to expect at each step.

Source: Statistisches Bundesamt (Destatis)

When Do I Have To Change My Tax Class?

Your tax class must be updated whenever your family or civil status changes. Germany’s ELStAM system (Elektronische LohnSteuerAbzugsMerkmale, the electronic wage tax deduction database) stores your current class and shares it automatically with your employer. When life changes, that data needs to reflect reality.

Registering a marriage or divorce at your local Standesamt (civil registry office) typically triggers an automatic update, but not always. Applying directly is safer.

Related guide Link Text German Tax System

The main life events that require a tax class change are:

Marriage moves both spouses into Steuerklasse 4 by default. If one partner earns significantly more, switching to the 3/5 combination usually reduces the monthly tax burden on the higher earner.

Separation or divorce reverts you to Steuerklasse 1. Single parents with sole custody qualify for Steuerklasse 2, which carries a meaningful tax relief allowance.

Death of a spouse grants the surviving partner Steuerklasse 3 for the two calendar years following the year of death. After that, the class drops to 1 or 2 depending on whether children are in the household.

Birth of a child with sole custody moves you into Steuerklasse 2.

One situation worth flagging: inheritances can also affect your overall tax picture. According to Statistisches Bundesamt (Destatis), in 2025 fully 95% of all taxable inheritance and gift transfers in Germany by value were recorded in the western federal states, totalling €142.5 billion assessed by the tax authorities. That concentration matters when assets change hands and beneficiaries reassess their financial situation.

Source: Statistisches Bundesamt (Destatis)

How to Change Your Tax Class After Marriage?

When you get married in Germany, the Standesamt (civil registry office) automatically notifies the Finanzamt (tax office) of your new marital status. Both spouses are assigned Steuerklasse 4 (tax class 4) by default, regardless of whether one partner earns significantly less or nothing at all.

If that default doesn’t suit your household, you can request a switch to the Steuerklasse 3 and 5 combination. This split makes financial sense when one partner earns at least 60% of the household’s combined income. The higher earner takes class 3, which carries the lower deduction rate, while the other takes class 5.

Since 2020, married couples can change their tax class combination multiple times per calendar year, as long as each change takes effect from the first day of a month. Previously, only one switch per year was permitted.

You can request the change using the Antrag auf Steuerklassenwechsel bei Ehegatten/Lebenspartnern form, submitted either directly to your Finanzamt or electronically through ELSTER (the official German tax portal).

How to Change Your Tax Class via the Paper Form?

The official form you need is called the Antrag auf Steuerklassenwechsel bei Ehegatten und Lebenspartnern. You can download it from your state’s tax authority website or pick it up in person at your local Finanzamt. The form is only a couple of pages long and not particularly complicated once you know what you are looking at.

Both spouses need to sign the form, even if only one of you is changing class. This is a joint declaration, so the Finanzamt will not process it with just one signature. Fill in your tax identification numbers (Steueridentifikationsnummer), your current tax classes, and the combination you are requesting. You also need to specify which month the new classes should take effect from.

Once filled out, you can drop it off at the Finanzamt in person or send it by post. There is no fee involved. Processing times vary depending on how busy your local office is, but in my experience it tends to go through within a few weeks. If you are changing near the end of the month and need it to kick in from the first of the next month, do not wait too long.

After the Finanzamt processes the request, your employer will be notified electronically through the ELStAM system. You do not need to hand anything to your employer yourself. The updated tax class should appear on your next payslip automatically.

How to Change Your Tax Class via ELSTER?

If you already have an ELSTER account, doing this online is honestly much faster and more convenient than printing and posting a form. ELSTER is the German tax authority’s official online portal, and it handles a surprisingly wide range of tax-related tasks beyond just filing your annual return.

To change your tax class through ELSTER, log in at elster.de with your existing credentials. Navigate to the section called Formulare und Leistungen, then look for Alle Formulare. From there, search for the Steuerklassenwechsel form. It is listed under forms for wage tax or Lohnsteuer.

The online version of the form mirrors the paper one closely. You enter both spouses’ tax IDs, select the desired class combination, and choose the month from which the change should apply. Both partners need to have ELSTER accounts and sign off on the submission electronically. If your spouse does not yet have an ELSTER account, registering one takes a few days because the activation letter arrives by post, so factor that in if you are working against a deadline.

Once you submit the form through ELSTER, you will receive a confirmation. The Finanzamt processes it and updates the ELStAM system, again without you needing to do anything on your employer’s end.

Which Tax Class Combination Should You Choose?

This depends entirely on your household income situation, and it is worth thinking through carefully before you apply.

Steuerklasse 4 and 4 is the default for married couples and works well when both partners earn roughly similar salaries. The deductions are symmetric, and you are unlikely to face a large back-payment when filing your joint tax return.

Steuerklasse 3 and 5 makes sense when there is a significant income gap between partners. The partner in class 3 pays considerably less wage tax throughout the year, while the partner in class 5 pays more. The important thing to understand is that this combination essentially front-loads a tax benefit for the household. When you file your joint return, the total tax liability gets recalculated, and you will often end up paying back some money to the Finanzamt if the numbers were not perfectly balanced during the year. That said, many couples still prefer it because the higher take-home pay for the main earner throughout the year can be useful for managing monthly budgets.

Steuerklasse 4 with the Faktor-Methode (factor method) is an option that most people overlook but that is actually worth considering. In this model, the Finanzamt applies a factor calculated from your joint income to reduce the tax deducted from each salary more precisely. It avoids the large gap between classes 3 and 5 and generally results in less of a surprise at tax time. You apply for it using the same form but indicate that you want the Faktorverfahren applied.

How Can I Change My Tax Class?

Changing your tax class in Germany is straightforward. For married couples or registered partners, the process comes down to a single form: the Antrag auf Steuerklassenwechsel bei Ehegatten (application to change tax class for spouses).

Fill out the form, save it as a PDF, print it, and have both spouses sign the hard copy. Then send it to your responsible Finanzamt (local tax office). That’s genuinely it. No appointment needed, no notarisation, no stack of supporting documents.

One thing to be clear about upfront: if you switch to the 3 and 5 combination, you are automatically required to file a joint Steuererklärung (income tax return) at the end of that year. This is not optional. The Finanzamt will expect it, and skipping it can lead to back payments with interest.

You can also handle the entire process digitally through ELSTER, Germany’s official tax portal, which I’ll cover in the next section.

How to Change Tax Class via ELSTER

If you prefer to skip the printer entirely, ELSTER is the way to go. It is the official online tax platform run by the German tax authorities, and it handles the tax class change application just as validly as the paper form.

You will need a registered ELSTER account to do this. If you do not have one yet, the registration process takes a few days because ELSTER mails an activation letter to your registered address in Germany. So plan ahead if you want to go the digital route.

Once you are logged in, here is how to find the right form. Go to Formulare & Leistungen, then select Alle Formulare, and search for Steuerklassenwechsel. The form that appears is the digital equivalent of the paper application. You fill it in online, submit it electronically, and both spouses can sign it digitally through the platform. No printing, no postage, no waiting at a letterbox.

The Finanzamt processes both the paper and digital versions the same way, so there is no speed advantage of one over the other in most cases. Personally, I used the paper form the first time simply because I already had everything ready to print, but ELSTER is genuinely painless once your account is set up.

Either way, once the Finanzamt processes your request, your employer gets notified automatically through the ELStAM system. You do not need to hand anything to your employer yourself.

When Can You Change Your Tax Class?

This is something a lot of people get wrong. You can change your tax class multiple times per year, but with one important restriction: each change can only take effect from the first day of a month, and it cannot be applied retroactively to months that have already passed.

So if you submit your application in the middle of November, the change will apply from December at the earliest. The months before that stay as they were, and those wages have already been taxed under your old class.

Until the end of 2024, the rule was stricter. Couples could only switch once per calendar year. That changed with the Jahressteuergesetz 2024, and from 2025 onwards you can switch as many times as you need within a year. This is genuinely useful if your income situation changes mid-year, for example if one partner takes parental leave or picks up a significantly higher-paying role.

That said, switching back and forth repeatedly is rarely worth the admin effort. The monthly net pay difference is real, but the annual tax bill balances out regardless of which class you held during the year. More on that below.

Which Tax Class Combination Actually Makes Sense?

If you are married or in a registered partnership, you will typically be choosing between two setups: both partners in Steuerklasse 4, or one partner in Steuerklasse 3 and the other in Steuerklasse 5.

The 4 and 4 combination treats both partners roughly equally. Each person pays tax as if they were earning their own income independently. This works well when both partners earn similar amounts. Your monthly take-home pay feels fair, and at the end of the year there are rarely large surprises in either direction.

The 3 and 5 combination is designed for couples with a significant income gap. The higher earner takes class 3, which applies a lower withholding rate and puts more money in their pocket each month. The lower earner takes class 5, which applies a much higher withholding rate. The trade-off is that the monthly net income of the lower earner drops noticeably. At the end of the year, filing your joint Steuererklärung reconciles everything, and you may get a refund or face a back payment depending on the actual numbers.

A lot of couples choose 3 and 5 to maximise the household’s total monthly cash flow, especially when one partner works part-time or is on parental leave. But it is worth running the actual numbers for your situation rather than assuming one setup is automatically better. The Bundesministerium der Finanzen offers an official tax calculator called the Lohnsteuer-Rechner that lets you compare scenarios side by side.

There is also a fourth option worth knowing: Steuerklasse 4 with the Faktor method (Faktorverfahren). This is an underused option that splits the tax burden more accurately between both partners while still accounting for the joint assessment benefit that married couples receive. It avoids the dramatic overtaxation that class 5 creates for the lower earner, and it usually means a much smaller balancing payment or refund at the end of the year. You apply for the Faktor method on the same Antrag auf Steuerklassenwechsel form by checking the relevant box.

How to Fill the Antrag auf Steuerklassenwechsel bei Ehegatten

This is the form married couples and registered partners use to request a tax class combination change. It looks more intimidating than it is. Work through it field by field and you’ll be done in under ten minutes.

Fields 1 and 2 ask for your Steuernummer (the tax number assigned by your local Finanzamt) and the name of your responsible tax office. Your Steuernummer appears on any previous Steuerbescheid (tax assessment notice). If you can’t locate it, leave Field 1 blank rather than guessing. Field 2 is simply the name of your city or the Finanzamt branch.

Field 3 applies only if you’ve recently moved. Write the name of your previous Finanzamt here.

Fields 5 through 9 cover the personal details of the person filing the request. Field 5 asks for your Identifikationsnummer (IdNr.), the permanent 11-digit tax ID that never changes regardless of where you move. You’ll find it on any recent Related guide payslip Payslip . Fields 6 through 9 are your name, street, house number, postcode, and city.

Field 10 is where you indicate your marital or partnership status: married since, widowed since, divorced since, or permanently separated since. Tick whichever applies and enter the date.

Fields 11 through 15 capture the other partner’s IdNr., name, and address if it differs from yours.

Fields 17 and 18 are the core of the form. In Field 17, tick your current tax class combination. If you’ve never changed anything before, it’s almost certainly IV/IV. In Field 18, tick the combination you’re requesting instead. Check the tax class comparison table earlier in this article to confirm which combination suits your household income split.

Fields 31 through 42 relate to the Faktorverfahren (factor method), an alternative to the III/V split that calculates withholding more precisely. Unless you specifically want the factor method applied, leave this section blank.

Field 43 requires signatures from both spouses or registered partners. The person submitting the form signs first. Missing signatures are the most common reason this form gets sent back, so double-check before you post or hand it in.

Source: Statistisches Bundesamt (Destatis) Once both signatures are in place, you can submit the form in one of two ways. Either print it, sign it physically, and drop it off at your local Finanzamt in person or by post. Or, if you’re already registered on Elster, you can submit it digitally without needing to print anything at all.

How to Change Tax Class in Germany via Elster

Elster is the official online tax portal run by the German tax authorities. If you’ve already filed a tax return in Germany, there’s a reasonable chance you already have an account. If not, registering takes a few days because Elster sends an activation code by post, so factor that in if you’re working against a deadline.

Once you’re logged in, look for the section called “Formulare & Leistungen” and then navigate to “Alle Formulare.” From there you can search for the Antrag auf Steuerklassenwechsel bei Ehegatten. The digital form covers exactly the same fields as the paper version, so everything I described above applies equally here. Fill in your IdNr., your partner’s details, your current and requested tax class combination in the equivalent of fields 17 and 18, and leave the Faktorverfahren section empty unless you specifically want that method.

The advantage of going through Elster is that the system catches obvious errors before submission. If you forget to fill in a required field, it flags it immediately rather than having a Finanzamt clerk post the form back to you two weeks later. Both partners still need to confirm consent, but this is handled digitally through the portal.

After submission, whether by post or through Elster, the Finanzamt typically processes the change within a few weeks. Your employer will then receive the updated tax class information automatically through the ELStAM system. You don’t need to notify your employer separately or hand them any paperwork. The update flows through the system on its own.

When Does the Tax Class Change Take Effect?

This is a question I get asked a lot and the answer depends on timing. If your application reaches the Finanzamt and gets processed before your employer runs payroll for that month, the new tax class will already show on your next payslip. If you just miss the cutoff, it kicks in the following month.

What you cannot do is request a retroactive change to a month that has already been paid out. The change only applies from the month it is processed going forward. So if you’re planning a switch ahead of parental leave or a significant income change, submit the form early. Waiting until the month you need it is cutting it too close.

Germany also introduced a rule a few years back that allows married couples and registered partners to change their tax class combination multiple times per year, rather than being restricted to once annually as was previously the case. So if your circumstances shift again mid-year, you’re not locked in.

Do You Need to File a Tax Return After Changing Tax Class?

If you and your partner switch to the III/V combination, filing an annual tax return (Einkommensteuererklärung) becomes mandatory. This is not optional. The German tax authorities require it because the III/V split is designed around an assumed income distribution, and the annual return is how the actual tax liability gets calculated and settled.

For couples staying on IV/IV or switching to the Faktorverfahren, filing a return is not legally required, though it’s often still worthwhile. If your actual income ends up lower than what was withheld during the year, you’ll get money back, but only if you file.

I filed returns every single year even when I was on IV/IV during my time in Freiburg. It almost always resulted in a refund, partly because of work-related expenses I could deduct and partly because the withholding system is intentionally set slightly high. There’s rarely a downside to filing.

Guide to Filling the Antrag auf Steuerklassenwechsel Bei Ehegatten Using Elster

Before anything else, you need an active Elster account. If you haven’t registered yet, do that first. The rest of this guide assumes you’re already logged in.

Step 1: Find the Form

Once you’re inside your Elster account, look for “Formulare & Leistungen” in the left-hand navigation. Use the search bar there and type “Wechsel.” The form you want is “Antrag auf Steuerklassenwechsel bei Ehegatten.” Click to open it.

Step 2: Kalenderjahr (Select the Tax Year)

Select the year for which you want the tax class change to apply. This is the Kalenderjahr (calendar year). You are submitting this for 2026, so select 2026. The form defaults to the current year in most cases, but always double-check before moving on.

Step 3: Startseite des Formulars (Opening Page)

The first proper page asks for your Steuernummer (tax identification number issued by your local Finanzamt, which is different from your permanent Steuer-ID). Select your federal state from the first dropdown, then enter your 10-digit Steuernummer in the second field. The third field, your responsible Finanzamt (local tax office), fills in automatically based on what you entered. Press “Nächste Seite” to continue.

Step 4: Antragstellende Person (The Applicant’s Details)

This page is about the person submitting the application. Fill in the fields carefully.

Field 5, Identifikationsnummer (IdNr.): This is your permanent 11-digit Steuer-ID, not the Steuernummer from the previous page. You can find it on any of your Related guide salary slips Payslip Guide or on any letter previously sent by the Bundeszentralamt für Steuern (Federal Central Tax Office).

Fields 7–8, Name & Vorname: Your last name followed by your first name.

Field 9, Geburtsdatum: Your date of birth. The field “Gegebenenfalls Geburtsname” is only for a previous surname, for example if you changed your last name after marriage. In “Ausgeübter Beruf,” write your current occupation in German — “Ingenieur” for engineer, “Kaufmann” for businessman, and so on.

Field 3, Früheres Finanzamt: Only relevant if you recently moved and your previous Finanzamt was different. Fill it in if applicable, otherwise leave it blank.

For your address under “Adresse im Inland,” fill in your current German address across Fields 6 to 9: Straße (street name), Hausnummer (house number), Postleitzahl (postcode), and Wohnort (city).

For more on how the German Related guide tax system works overall German Tax System , that guide covers the broader picture if you need context on where tax classes sit within the system.

Conclusion

Your tax class (Steuerklasse) in Germany is tied directly to your marital status, and choosing the right combination genuinely matters for your monthly Nettolohn (take-home pay). Married couples get to choose, and when there is a meaningful income gap between partners, a split like III/V can ease the monthly cash flow. Just remember that the annual income tax bill stays the same regardless. The monthly advantage is a timing benefit, not a permanent saving.

If you are still unsure which Steuerklasse fits your situation, a Steuerberater (tax advisor) is genuinely worth the fee.

Jibran Shahid

Hi, I am Jibran, your fellow expat living in Germany since 2014. With over 11 years of personal and professional experience navigating life as a foreigner, I am dedicated to providing well-researched and practical guides to help you settle and thrive in Germany. Whether you are looking for advice on bureaucracy, accommodation, jobs, or cultural integration, I have got you covered with tips and insights tailored specifically for expats. Join me on my journey as I share valuable information to make your life in Germany easier and more enjoyable.