How to complain to Commerzbank.

Type: Bank
Region: Germany
Escalate to: Ombudsmann der privaten Banken (Bundesverband deutscher Banken). The financial regulator BaFin also handles complaints about banks.
Response deadline: The bank should respond within 15 business days under EU rules (up to 35 in exceptional cases). The Ombudsman scheme is free; escalate if you are unhappy with the reply or receive no answer.

Details checked 2026-06-02

Commerzbank is a member of the private banks' ombudsman scheme. BaFin (https://www.bafin.de) is the supervisory authority you can also notify.

Complain to Commerzbank first and ask for a written final response. If they reject you or the deadline passes, you can take it to the Ombudsmann der privaten Banken (Bundesverband deutscher Banken). The financial regulator BaFin also handles complaints about banks. for free, and their decision is binding on the company.

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Details compiled for convenience. Always confirm the current contact on Commerzbank's own site. A self-serve tool, not a law firm. Not legal advice.