Tax fraud rules in Germany 2026: penalties, time limits and how to come clean

Last reviewed: November 2026 · Reviewed by Stéphane Gombauld, tax expert, technologist and digital nomad

You kept a foreign account, forgot a crypto wallet or filed late, and want to know how serious German tax law is about it. This guide explains evasion versus mistake, the 2026 penalties and interest, how far back the Finanzamt can look, and how voluntary disclosure works.

Germany tax fraud regulations in 2026: the key figures

Is this guide for you?

Read on if you…

• live in Germany, or did, and have undeclared foreign income, accounts or crypto gains
• filed late or incorrectly and want to know the difference between a penalty and a prosecution
• are planning a move and want to close your German file cleanly

Probably not your case if you…

• have never been a German tax resident and have no German-source income
• are looking for an overview of normal German taxes, covered in our German tax system overview

What counts as tax evasion in Germany?

The core rule is §370 of the Fiscal Code (Abgabenordnung, AO). You commit tax evasion if you intentionally give the tax authorities incorrect or incomplete information, or stay silent when you had a duty to inform them, and tax is understated as a result. Three things follow.

1. Omission counts. Not filing a return you were obliged to file is evasion if you did it knowingly. Many expats assume silence is safe. It is not.
2. Intent is needed, but "conditional intent" is enough. If you thought "this might be taxable, but I will not look into it", German courts treat that as intent.
3. The attempt is punishable. Submitting a false return is already an attempted evasion even before the assessment is issued.

Typical cases for mobile people: undeclared foreign dividends or rental income while resident in Germany; crypto gains within the one-year holding period never reported (see cryptocurrency taxes in Germany); claiming to have left while keeping a flat available (see ceasing German tax residency); a foreign company actually managed from Germany.

Mistake, recklessness or evasion?

German law separates three levels:

Here is the catch with §153 AO: once you discover an error, you must correct it without delay, or it becomes evasion by omission.

What are the penalties in 2026?

Criminal penalties

Simple evasion carries a fine (5 to 360 daily rates based on net income) or up to five years' imprisonment. In a particularly serious case the range is six months to ten years. The most common trigger is evasion "on a large scale", fixed by the Federal Court of Justice (BGH) at EUR 50,000 per offence. Forged documents or gang activity also qualify.

The BGH has also set sentencing bands. Above EUR 100,000 evaded, prison is normal, though usually suspended. Above EUR 1 million, unsuspended prison is the rule unless there are weighty mitigating factors.

Money you pay on top

• The tax itself, going back up to 10 years for evaded amounts.
• Evasion interest (Hinterziehungszinsen, §235 AO) at 0.5% per month, 6% per year, from the day the tax would have been due. This rate was not lowered when ordinary assessment interest was cut to 1.8% per year in 2022.
• Late-filing surcharge (§152 AO) if returns were missing: 0.25% of the tax per month, at least EUR 25 per month, and automatic once a return is more than 14 months late.
• Late-payment penalty (Säumniszuschlag, §240 AO) of 1% per month on unpaid assessed tax.

Beyond money, a criminal record can affect residence permits, naturalisation, professional licences and company directorships.

How far back can the Finanzamt go?

Two clocks run in parallel, and they differ.

Criminal limitation (how long you can be prosecuted): five years for simple evasion, fifteen for particularly serious cases. The clock starts when the wrong assessment is issued, or when one would normally have been issued if you did not file. Opening an investigation interrupts it.

Assessment limitation (how long the tax office can still change your assessment and demand tax): four years normally, five if the understatement was reckless, ten if it was evaded. The period only starts at the end of the year in which you filed, or three years after the tax year if you never filed. In practice an evaded 2015 return filed late can still be reassessed in 2026.

Enforcement is data-driven. Germany receives account data from over 100 countries under the OECD Common Reporting Standard, exchanges income data within the EU, and from 2026 collects crypto platform reports under DAC8. Group requests to foreign exchanges and purchased leak data have led to prosecutions. If you assume the Finanzamt does not know, you are usually wrong.

How does a voluntary disclosure work?

Germany still offers a route back that many countries have abolished: the Selbstanzeige under §371 AO. File a complete correction before discovery and you are not prosecuted. Conditions in 2026:

1. Completeness. You must correct all unreported income of one tax type for at least the last ten calendar years, or for all years still open to prosecution if longer. A partial disclosure fails completely and is itself evidence against you.
2. Timing. It must arrive before discovery: before an audit order is announced, an investigator appears or the tax office has objectively found the offence and you could expect that.
3. Payment. You pay the evaded tax plus 6% annual interest within the deadline set by the Finanzamt.
4. Surcharge above EUR 25,000 per offence (§398a AO): 10% of the evaded tax up to EUR 100,000, 15% up to EUR 1 million, 20% above that. Pay it and the case is closed without prosecution.

A disclosure is a technical document. Done wrong, it hands the prosecutor a confession without the immunity. Estimating missing figures generously is accepted; omitting a year or an account is fatal. Get a tax adviser or lawyer to file it. Reckless understatement (§378 AO) has its own disclosure route with no surcharge.

What does this mean if you are moving in or out?

Moving does not reset the clocks. Income earned while German-resident stays assessable for up to ten years if evaded, and Germany can ask other EU countries to collect. The exit tax on shareholdings is not a fraud rule, but ignoring it is a classic way into §370 territory. If you arrive with undeclared income from your old country, Germany only cares about correct German returns from your first resident year, including foreign income under the progression clause. Austria has a similar voluntary disclosure system; see tax fraud regulations in Austria. Switzerland distinguishes evasion, an administrative offence, from fraud with forged documents; see tax fraud regulations in Switzerland.

Common mistakes (and what they cost)

• Thinking a foreign account is invisible. CRS data from over 100 countries reaches the Finanzamt automatically. Discovery removes the voluntary disclosure option and adds a criminal case.
• Filing a partial disclosure. Leaving out one account or one year makes the whole Selbstanzeige ineffective. You still pay everything, and you are prosecuted anyway.
• Not correcting a known mistake. Under §153 AO you must correct promptly. Waiting turns an honest error into evasion by omission, with 6% interest running throughout.
• "Forgetting" to file after leaving Germany. German-source income remains taxable and a missing return is evasion by omission, with a 0.25% monthly surcharge on top.
• Assuming the statute has run. The ten-year period for evaded tax starts late; 2015 income can still be taxed in 2026.

Frequently asked questions

What is the penalty for tax evasion in Germany?

Under §370 AO, simple tax evasion is punished with a fine or up to five years in prison. Particularly serious cases, including evasion of EUR 50,000 or more per offence, carry six months to ten years. Courts generally impose prison, usually suspended, above EUR 100,000 and unsuspended prison above EUR 1 million. You also repay the tax with 6% annual interest.

How many years back can the German tax office audit?

The assessment period is four years in normal cases, five years for reckless understatement and ten years for tax evasion. It starts at the end of the year you filed, or three years after the tax year if you never filed. Criminal prosecution is possible for five years, or fifteen years in particularly serious cases.

Is a voluntary disclosure still possible in Germany in 2026?

Yes. Under §371 AO you avoid prosecution if you correct all unreported income for at least the last ten years before the tax office discovers it, and pay the tax plus interest on time. For more than EUR 25,000 evaded per offence you also pay a surcharge of 10%, 15% or 20% depending on the amount.

What is the difference between tax evasion and tax avoidance in Germany?

Tax avoidance uses legal options, such as holding crypto for over a year or timing a property sale, and is lawful. Abusive structures with no economic purpose can be disregarded under §42 AO, leading to extra tax but not criminal charges. Tax evasion means intentionally giving the tax office false or incomplete information, and is a crime.

Does the Finanzamt know about my foreign bank account?

Very likely. Germany receives annual account balance and income data from more than 100 jurisdictions under the Common Reporting Standard, and from EU partners under the DAC directives. From 2026 crypto platforms report too. The data is matched against your returns by the Federal Central Tax Office and forwarded to your local Finanzamt.

Can I go to prison for not filing a German tax return?

In principle yes, if you were obliged to file and knowingly did not, because omission is tax evasion under §370 AO. In practice, first-time cases with modest amounts end with a fine or a late-filing surcharge. Filing the missing returns before the tax office acts can qualify as a voluntary disclosure and remove the criminal exposure entirely.

Related guides

• Germany's tax system in one page
• How to stop being a German tax resident
• Cryptocurrency taxes in Germany and the new reporting rules
• Capital gains tax in Germany
• Specific taxes in Germany: VAT, trade tax and more
• Tax fraud regulations in Austria
• Tax fraud regulations in Switzerland
• All country tax guides

Sources

• Abgabenordnung (AO), §§152, 153, 169–171, 235, 240, 370–378, 398a – Gesetze im Internet
• Bundesministerium der Finanzen – tax administration and enforcement
• Bundeszentralamt für Steuern – international exchange of information (CRS, DAC)
• OECD – Automatic Exchange of Information portal
• PwC Worldwide Tax Summaries – Germany, tax administration (secondary cross-check)

This guide is general information, not personalised tax advice. See how we research and review.