Deutsche Bank Raided Over Postbank's Cum-Cum Tax Avoidance

Prosecutors Raid Deutsche Bank Over Postbank's Dividend Tax Scheme

On 22 July 2026, dozens of public prosecutors and tax investigators from Düsseldorf raided Deutsche Bank's Frankfurt headquarters. The search targets documents related to alleged illegal Cum-Cum tax transactions conducted by Postbank between 2008 and 2010, years before Deutsche Bank fully absorbed the lender in 2018. Authorities suspect Postbank avoided more than €350 million in taxes during that period, a sum they now seek to recover from Deutsche Bank as Postbank’s legal successor.

Ten former Postbank executives are named as suspects. Deutsche Bank, which began acquiring Postbank in 2009 and completed the takeover and legal merger in 2018, is not itself the focus of the criminal probe but is being searched as a third party. A bank spokesperson confirmed the action and said the institution is cooperating fully with authorities.

The investigation highlights a long-running scandal around Cum-Cum trades—complex share transactions structured around dividend record dates to exploit a tax loophole. While some forms of Cum-Cum were deemed illegal by Germany’s highest tax court in 2015, enforcement has lagged far behind the aggressive pursuit of the related Cum-Ex scandal. Total estimated losses to German taxpayers from Cum-Cum schemes range from €7.3 billion to as much as €28 billion, according to government and expert estimates.

The Cum-Cum Scandal: How It Works and What It Means for Deutsche Bank

The Mechanics of Cum-Cum Transactions

Cum-Cum trades involved moving shares just before the dividend date between investors subject to different tax rates. Until 2013, domestic investors could reclaim withholding tax, while foreign investors received smaller refunds. By orchestrating short-term, often pre-arranged transfers, banks effectively generated unjustified tax refunds at the expense of the state, even though no genuine economic ownership changed. The Bundesfinanzhof ruled in 2015 that certain structured Cum-Cum deals were unlawful, but proving criminal intent in each specific arrangement remains a challenge.

Postbank’s Alleged Role and Deutsche Bank’s Exposure

Prosecutors allege Postbank used such schemes to slash its own tax bill by hundreds of millions. Because Deutsche Bank fully absorbed Postbank, any resulting back-tax liability, interest and potential fines would fall on the group. The search of Deutsche Bank's offices indicates investigators are tracing internal records from the relevant period. While the bank is cooperating, the sheer size of the suspected shortfall—over €350 million—represents a material risk, even for an institution of Deutsche Bank's scale.

Deutsche Bank’s Own Cum-Cum Deals Under Investigation

Separately, investigative reports from March 2026 revealed that Cologne prosecutors have been probing Deutsche Bank’s own involvement in Cum-Cum transactions between 2009 and 2015. Those deals allegedly allowed the bank to collect more than €600 million in tax reclaims that should have gone to the state. The bank has stated it is cooperating comprehensively with that inquiry as well. If both probes lead to formal charges or demands for repayment, Deutsche Bank could face a combined exposure approaching €1 billion, before penalties.

A Broader Crackdown on Tax Avoidance

While Cum-Ex cases have already produced convictions and prison sentences, Cum-Cum investigations are still in their early stages. Many German banks, insurers, savings banks and cooperative lenders are suspected of participating. The Düsseldorf raid signals that authorities are now intensifying efforts to recover lost taxes, potentially setting precedents that could affect the entire financial sector. For Deutsche Bank, this marks yet another chapter in a long history of legal entanglements, putting its compliance turnaround narrative under fresh scrutiny.

Deutsche Bank Faces Regulatory and Financial Risks from Postbank's Past

For Deutsche Bank shareholders and analysts:

• Watch for announcements from the Düsseldorf prosecutor’s office on potential indictments of former Postbank officials, which could clarify the scope of the bank’s liability.
• Monitor developments in the separate Cologne investigation into Deutsche Bank’s own Cum-Cum deals, as combined exposure could substantially increase provisions for legal risks.
• Review Deutsche Bank’s next quarterly report for any adjustments to litigation reserves, particularly if the back-tax claim is quantified by authorities.
• Assess the potential reputational damage among institutional clients and regulators, which may influence the bank’s risk appetite and compliance costs going forward.

For banking sector participants:

• The raid underscores a rising enforcement trend; financial institutions with past Cum-Cum activity should re-examine their own exposure and consider proactive engagement with tax authorities.
• A successful recovery by German tax authorities could encourage other European countries to pursue similar claims, raising cross-border legal risks for internationally active banks.