Have any of you recently had your bank account suddenly restricted or even frozen? It happened to me last week with Sabadell. I was trying to make a transfer in the morning, and the app popped up a message saying my account functions were limited and I needed to visit a branch. My heart skipped a beat, thinking something serious had happened. Later, after talking with friends, I found out that similar things have been happening recently with Santander and CaixaBank, so it seems it’s not an isolated incident. That’s why I’m starting this thread to share my experience, and I welcome everyone to join the discussion.
When I got to the bank branch, the manager was quite calm. He checked and said my account was undergoing a routine review and I needed to update my personal information, mainly to comply with the latest anti-money laundering regulations. He mentioned that financial supervision in Spain has become increasingly strict in recent years, and banks periodically review customer information for validity, especially for foreigners like us with non-EU passports, who are considered a high-priority group.

Why Was My Account Flagged for Review?
Based on my conversation with the bank manager and situations encountered by friends discussing [interest on deposits], I’ve summarized a few potential triggers for a review:
- Expired identification documents: This is the most common reason! For example, your NIE card has expired, but even if you’ve renewed it, the information in the bank’s system hasn’t been updated. When the bank finds your registered ID is expired, they’ll lock the account until you provide the new one.
- Large or unusual transactions: A sudden large-value transaction that doesn’t fit your usual pattern, such as a transfer of tens of thousands of euros, can easily trigger the risk control system.
- Incomplete or outdated information: Your address, phone number, or employment information has changed since you opened the account, but you haven’t notified the bank.
- Random periodic checks: Even if you’ve done nothing wrong, you might be randomly selected for a review by the bank’s compliance department. It’s purely a matter of ‘bad luck’.
What Documents Do You Need to Prepare?
The requirements for [opening a bank account in Spain] can vary slightly from bank to bank, but they generally revolve around the same few items. Here’s what I prepared for my visit to Sabadell, which you can use as a reference. It’s best to confirm with your account manager via the app or by phone before you go, to avoid a wasted trip.
| Document Type | Description |
| Proof of Identity | Original and copy of your valid NIE/TIE card. |
| Proof of Income | Recent payslips, work contract, or quarterly tax returns for self-employed individuals (autónomos). |
| Proof of Source of Funds | If there’s a large deposit, you may need to provide supporting documents, such as a property sale agreement, a parental gift declaration, etc. |
| Proof of Address | Less commonly requested, but it’s good to have on hand just in case, such as your empadronamiento or a recent utility bill. |
After I submitted the documents, the bank employee made copies and updated the system. About ten minutes later, my account was back to normal. The whole process was smoother than I expected, so if you encounter this issue after opening a bank account in Spain, don’t get too stressed. The most important thing is to respond to the bank’s request promptly and communicate with them proactively. If you ignore it, your account could be permanently frozen, which would be a much bigger problem. Hope this post helps everyone!