Question 1

How can I avoid double taxation between Germany and my home country?

Accepted Answer

Germany has so-called double taxation agreements (DTAs) with around 100 countries worldwide. These treaties establish which country has the right to tax which types of income, through exemptions or tax credits. You can easily check whether such an agreement applies to you on the website of the Federal Ministry of Finance (Bundesministerium der Finanzen).

If there is a DTA between Germany and your home country, you can request a tax exemption (Freistellungsbescheinigung) to avoid German withholding tax (Quellensteuer). For these mechanisms to take effect, you usually need to declare the relevant income on your German tax return — and, depending on the income type, in your home country too. Only once this is done can you reap the benefits and avoid accidentally evading taxes.

This is a simplified answer to a question about complicated and multi-faceted international tax law. We always recommend consulting a tax specialist about your specific situation.

Question 2

Do I need to declare foreign bank accounts in Germany?

Accepted Answer

Germany taxes the worldwide income of its tax residents, and that very much includes income from accounts you hold abroad. The accounts themselves don't need to be "registered" with German authorities, but the interest, dividends and any realised capital gains generated in them belong on your annual tax return — usually on Anlage KAP for capital income, and possibly Anlage AUS for foreign income.

A common assumption is that foreign banks simply don't communicate with the German tax office. That hasn't been true for years. Under the EU's Common Reporting Standard (CRS) and various bilateral data-exchange agreements, banks in more than 100 countries automatically report account data on their foreign tax residents to the relevant home authority — and the German Finanzamt receives data from most of these countries. They then cross-check against your filed return. So the practical risk of "forgetting" a foreign account is much higher than people tend to assume.

The cleanest approach is also the simplest: write down every account you hold outside Germany, note the income each one generated during the year (interest, dividends, gains), and include it all on your German return. For the first year of doing this, a Steuerberater who handles cross-border cases regularly is usually well worth their fee — they will know which forms apply to which income and how to credit any foreign tax already paid.

Question 3

Do expats need to file a German tax return?

Accepted Answer

In Germany, employees on a single salary in tax class 1 with no significant other income are often not required to file a tax return at all. They can file voluntarily — and a lot of expats really should, because the German system is friendlier to expat-typical expenses than people expect.

Voluntary filings typically pay off when you have deductible expenses such as moving costs to Germany, double-household expenses (doppelte Haushaltsführung), commuting, work-related equipment, further education, or charitable donations. The first year in Germany is often particularly worthwhile because relocation costs alone can be significant.

Mandatory filing kicks in for several situations that are common for expats: tax classes 3/5 or 4-with-factor, multiple employers in the same year, Elterngeld or short-time work above certain thresholds, foreign income, rental income, self-employment, or capital income that has not been fully taxed at source.

The return is filed with your local Finanzamt, typically through the official online portal ELSTER or via a tax advisor (Steuerberater). Deadlines differ depending on which route you take — self-filers face an earlier deadline than people filing through a Steuerberater.

For your first German tax return — especially if relocation costs and double-household expenses are involved — a Steuerberater often pays for themselves through correctly claimed deductions you might otherwise miss.

Question 4

What is the difference between tax classes 1, 3, 4 and 5?

Accepted Answer

German tax classes (Steuerklassen) determine how monthly income tax is withheld from your salary. They don't change your total annual tax — only how that tax is spread across the year. The annual Einkommensteuer itself is the same regardless of which class you pick.

Class 1 applies to singles, divorced people and most non-married employees. For married couples, the options open up:

Class 3/5 is the asymmetric setup. The higher earner takes class 3 with very low withholding; the lower earner takes class 5 with high withholding. The household's annual tax bill is roughly the same as 4/4, but the monthly cash flow shifts firmly toward the higher earner. This works well when one partner earns substantially more than the other.

Class 4/4 applies the same withholding rules as class 1 to both partners — sensible when both incomes are similar.

Class 4 with factor (Faktorverfahren) keeps both partners at class 4 but applies a calculated factor to even out monthly net pay between them. The year-end true-up at the tax return is small, and both partners have a more accurate withholding through the year.

Choosing well is mostly about monthly cash flow — but it also has real consequences for benefits like Elterngeld, which is calculated on the net pay of the months before parental leave. So a class change planned several months ahead of birth can directly increase the Elterngeld amount.

The Finanzamt's default after marriage is rarely the optimal choice for a given couple. It is worth a quick review.

Question 5

Can moving costs to Germany be tax-deductible?

Accepted Answer

The Finanzamt draws a clear line between job-related and personal moves, and the distinction is what makes the deduction work.

A move counts as job-related when you take up a new German job, transfer within an employer, or significantly shorten your daily commute (typically by at least one hour round-trip per day). For these moves, the deductible expenses include transport of belongings, travel to find an apartment, double-rent during the transition, broker fees, and a flat-rate allowance for miscellaneous expenses (Umzugskostenpauschale). Receipts matter — keep everything you can.

Employers often reimburse part of these costs through a relocation package; the deductible amount is reduced by whatever the employer has already covered, so it is worth tracking which expenses were paid by you and which by the company.

For expats, the first move from abroad to Germany almost always qualifies if it was for a new German job — which is one of the main reasons the first-year German tax return is so often worth doing. The savings can be meaningful, especially when international transport, temporary accommodation and double-rent stack up.

Personal moves — within the same city, with no job change — generally don't qualify as Werbungskosten. A smaller deduction may still be available for some related costs as haushaltsnahe Dienstleistungen, but the difference in scale is significant.

For a complex relocation, a Steuerberater for the first German return is one of the better-value uses of professional help.

Taxes for expats

Questions in this category

How can I avoid double taxation between Germany and my home country?

Do I need to declare foreign bank accounts in Germany?

Do expats need to file a German tax return?

What is the difference between tax classes 1, 3, 4 and 5?

Can moving costs to Germany be tax-deductible?

Questions in this category

How can I avoid double taxation between Germany and my home country?

Do I need to declare foreign bank accounts in Germany?

Do expats need to file a German tax return?

What is the difference between tax classes 1, 3, 4 and 5?

Can moving costs to Germany be tax-deductible?

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