Switzerland: How to Report Bank Fraud
If money left your account without your permission, or you were tricked into sending it, contact your bank or payment provider straight away. The faster they hear from you, the better the chance of stopping or recovering the money. Below are the official fraud and card lines for 3 providers in Switzerland.
Do this first
- Call your bank’s fraud or card line now. Use a number from this page, the back of your card, or your bank’s official app. Never use a number from a text, an email, a caller or a search ad.
- Block your card or freeze your account in the app if you can, and change your online banking password.
- Ask the bank for a reference number, and write down the time you reported it.
- Report it to the police as well: see who handles cybercrime in Switzerland.
- Keep everything: messages, call logs, screenshots and transaction IDs. Your bank will never ask for your PIN, password or a one-time code.
Know this about Switzerland
- 0844 numbers are charged at business rates and may not work from abroad: use the +41 44 or +41 58 numbers instead.
- For UBS and TWINT, use the contact in your app or the number on the back of your card; we could not verify their pages.
Bank and payment fraud lines
PostFinance
Bank- Block card (private customers):+41 58 448 14 14(24/7 for card blocking)
- Credit or prepaid cards:+41 58 448 14 00(24/7)
- Block card (business customers):+41 58 448 14 24(24/7)
App or online: App or e-finance: block the card.
Raiffeisen Switzerland (local Raiffeisen banks)
Bank- Block debit or account card:+41 844 888 800(24/7)
- Block debit or account card, from abroad:+41 58 854 62 00(24/7)
- Block credit card (Mastercard / Visa):+41 58 958 69 11(24/7)
- Customer service:+41 844 888 808(Mon–Fri 7:30am–9pm, Sat 9am–1pm)
- Customer service, from abroad:+41 58 854 62 62(Mon–Fri 7:30am–9pm, Sat 9am–1pm)
App or online: E-Banking: block the card directly, or use the DebiX+ app (debit cards) or the 'one' app (credit cards).
Zurcher Kantonalbank (ZKB)
Bank- Block debit or account card:0844 843 823(24/7)
- Block debit or account card, from abroad:+41 44 293 93 93(24/7)
- Block credit or prepaid card (Switzerland and abroad):+41 58 958 83 83(24/7)
- eBanking support:0844 840 140(Mon–Fri 8am–10pm, Sat–Sun 9am–6pm)
- eBanking and TWINT support, from abroad:+41 44 293 95 95(Mon–Fri 8am–10pm, Sat–Sun 9am–6pm)
- ZKB TWINT support:0844 000 020(Mon–Fri 8am–10pm, Sat–Sun 9am–6pm)
Not listed here
We could not confirm contact details on the official website of: UBS Switzerland, TWINT. Rather than risk a wrong number, we leave them out. Use the number printed on your card or shown in the provider’s official app.
If your bank won’t help
Swiss Banking Ombudsman
Free, neutral information and mediation for clients of Swiss banks. It cannot issue binding rulings.
Official websiteReport it to the police too
Banks often ask for a police report before they investigate. Cybercrime agencies in Switzerland lists who to report to, and our step-by-step guide covers the rest: How to Report Cybercrime in Switzerland (and Get Your Money Back).
Every number on this page was read on the provider’s or regulator’s own website on 3 October 2026. Banks change numbers, so if one doesn’t work, use the number on your card or in the official app, and tell us so we can fix it. See every country in the Bank Fraud Help directory.