A bank in Spain asks for KYC/AML documents: what to send and how to respond
Your bank in Spain has asked for documents — this is a standard KYC or AML check. What exactly should you send, in what format, and what happens if you don't respond? This article gives practical answers. If your account is already blocked or the bank is closing your card, see our bank account blocked guide.
What is KYC and AML
KYC (Know Your Customer) is the identity verification process that banks are legally required to carry out. It is not an accusation of fraud — it is a standard regulatory obligation imposed on all financial institutions.
AML (Anti-Money Laundering) is the broader framework: the full set of measures banks must implement to prevent money laundering and terrorist financing. KYC is one component of AML.
In Spain, the core KYC/AML requirements for banks are set out in Ley 10/2010 de prevención del blanqueo de capitales and its implementing regulation RD 304/2014. The EU framework comes from the AMLD directives. Supervision is carried out by Banco de España and SEPBLAC.
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Why the bank requests documents
There are several common reasons why a bank may ask for documents:
- Periodic KYC refresh — banks update customer files regularly, especially for long-standing accounts where data has not changed in years.
- Change in transaction profile — large incoming transfers, new sources of funds, or unusual activity for the account type.
- Change in tax residency — the bank needs to update FATCA/CRS declarations.
- Change in legal status — new citizenship, new residence permit (TIE), business registration.
- Regulatory audit — A regulator’s review: banks sometimes update customer data across the board after a check by Banco de España or SEPBLAC.
- Expiry of a document on file — passport, residence permit, or power of attorney has expired.
- Opening a new product — mortgages, loans, and investment accounts require extended KYC.
What documents are typically requested
The specific list depends on your profile, account type, and what the bank is updating. Below are the most common categories.
- NIE + valid passport (for foreign nationals).
- DNI (for Spanish nationals).
- TIE — residence card (shows your permit type if applicable).
- The document has to be valid — an expired one will normally be refused.
- Municipal registration certificate (certificado de empadronamiento) — issued within the last 3 months.
- Utility bill (electricity, water, gas) in your name — not older than 3 months.
- Bank statement with your address (accepted by some banks).
- Employment contract (contrato de trabajo) + last 2–3 payslips (nóminas).
- Tax return (declaración de la renta, modelo 100) for the most recent year.
- For self-employed (autónomo): quarterly declarations (modelo 130), bank statements.
- For pensioners: pension certificate showing monthly amount.
- For businesses: annual accounts, corporate account statements.
- Property or asset sale deed (escritura de compraventa).
- Inheritance deed (escritura de herencia) or donation agreement.
- Insurance payout or court award — the relevant decision or agreement.
- Investment income — brokerage or fund management statements.
- Loan — loan agreement showing terms of repayment.
- For corporate accounts: ownership structure documentation showing ultimate beneficial owners (>25%).
- If acting under power of attorney: notarised power of attorney + principal's identity documents.
- For Spanish SL/SA: extract from the Registro Mercantil + list of shareholders.
Not sure what the bank is asking for?
Upload the bank letter or app message. RightNOW explains what documents the bank is asking for, whether there is a deadline, what happens if you ignore it, and whether a reply is enough or you need to go further.
Check the bank request for €9.90 →How to respond to the bank correctly
You should respond in writing and within the deadline stated in the bank's letter. A phone call may leave you without a reliable written record of your response.
- Read the request carefully and make a list of everything the bank is asking for. If anything is unclear, ask for clarification in writing through the same channel (email, online banking, or formal notice (burofax)).
- Gather all the documents on the list. Check that your passport, TIE, and municipal registration certificate (empadronamiento) are current and not older than 3 months (for address documents). Translate or notarise foreign-language documents if the bank requires it.
- Prepare a cover letter. Briefly state who you are, reference the bank's request, list what you are enclosing and which item in the request each document covers. This helps the bank's compliance team verify the package quickly.
- Send the documents so that you can prove you sent them: email with a read receipt, the bank's online portal with a screenshot of submission, or — in a dispute — a formal notice (burofax). Keep your proof of sending and copies of everything you submitted.
- Note the date of your response. If the bank set a deadline (e.g. 15 days), make sure you meet it. If you cannot, notify the bank in writing before the deadline expires and state when you will be able to provide the documents.
- Keep copies of everything — all submitted documents and all correspondence. If a dispute arises later, these records can serve as evidence.
When the request becomes a problem
A standard KYC request is normal practice. But sometimes the situation goes beyond what is reasonable:
- The bank asks for documents you objectively cannot have — for example, a 10-year income history from someone who recently arrived in Spain.
- The bank does not specify what it needs — it writes "confirm the origin of funds" without clarifying what it will accept as evidence.
- The bank froze the account and never said why — under the money-laundering rules the measure may come with no warning, but you are still owed at least a general reason citing Ley 10/2010; silence is only for genuine confidentiality cases.
- It was an ordinary document request and the account was frozen anyway — for a routine request you are owed a reasonable deadline and a warning about the consequences before any measure.
- The bank does not respond after receiving your documents — more than 30 days have passed, the block has not been lifted, and there is no reply.
- The bank refuses to accept documents that you consider adequate, without explaining why.
- The bank threatens immediate account closure without giving you the opportunity to provide documents or challenge the decision.
If any of the above applies to your situation, the next step is a formal written complaint.
Resolved complaints: what the Bank of Spain found
What counts as the breach is not the block, but the bank’s silence before it. The Bank of Spain resolves customer complaints and publishes every year where banks were found wrong. In its 2024 report, account blocks under the money-laundering rules are listed among the matters where the failure usually lies in the information the bank gave the customer BEFORE the block. The typical lapses look like this: the account was frozen and nobody said, even roughly, why; documents were requested but the customer was never told what happens if they do not arrive. The two-month notice is a different thing — that is how a bank closes an account in the ordinary way. If it froze the account before that period ran out, the freeze needs its own explanation.
What was not obvious. Arguing that the bank has no right to check you gets nowhere: the law says it does, and under the anti-money-laundering rules it may freeze an account with no warning at all. What decides complaints is everything around that: did the bank tell you the account was frozen, did it say even briefly why, did it warn you what would happen if the documents never came. So ask for the list of documents and the deadline in writing — and, if the account is frozen, for the reason in writing. There is a second point few people know: where the account is servicing a loan, the supervisor regards it as proportionate to keep those payments running rather than freeze everything, unless the bank explains why this particular case needs a total block.
Outcome: there is no single figure here. The cost is in time — the account stays frozen while letters go back and forth, and the Bank of Spain only reviews a complaint after you have gone through the bank’s own customer service (SAC), which takes months.
The rules are in force: the bank’s customer due-diligence duties come from Ley 10/2010, while the duty to inform and the notice periods come from the transparency rules on customer relations. The Bank of Spain report is not a judgment but the supervisor’s review of complaints: it shows what the supervisor treats as a breach, not how a court would rule.
Bank of Spain, Conduct of Entities Department · отчёт за 2024 год
The guide above explains how to answer the bank. What is worth checking is not the block itself but what the bank told you before it: the reason, the list of documents and the deadline.
Check my situationHow to file a complaint
Complaining about a bank in Spain follows two mandatory steps.
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Step 1 — SAC (Servicio de Atención al Cliente)
Every bank in Spain is required to have an internal customer complaints service (SAC). Submit your complaint in writing — through the online banking portal, by email to the SAC address, or by registered letter. The deadline depends on the case: 15 business days for payment services, one month for other complaints from a consumer living in the EU, two months if you are not a consumer or live outside the EU. Keep your submission confirmation and complaint reference number.
RightNOW drafts the complaint to the bank's SAC → -
Step 2 — Banco de España (for breaches of service rules)
If SAC has not responded within the deadline, the response is unsatisfactory, or the bank has breached procedural obligations — you may submit a complaint to the Departamento de Conducta de Entidades of Banco de España. This is free of charge. Banco de España assesses whether the bank's conduct complied with regulatory requirements. Important: Banco de España does not award damages or forcibly unblock accounts — but its findings are an official assessment and can support further legal action.
How RightNOW helps
RightNOW can help when the bank does not answer, has blocked an account without explanation, or is refusing to accept your documents.
- We analyse the bank's request and help you understand exactly what is needed and in what form.
- We prepare a structured cover letter to accompany your document package.
- We draft a formal written complaint to the bank's SAC with specific legal grounds.
- If needed, we prepare a complaint to Banco de España.
FAQ
1. Am I required to respond to the bank's document request?
Yes. Ley 10/2010 requires banks to carry out KYC/AML checks. If the customer does not provide the information needed to apply those measures, the bank may restrict or close the account.
2. What documents does a bank in Spain usually request?
NIE/passport, municipal registration certificate (empadronamiento), payslips or tax return, and for large transactions — origin of funds documents. The specific list depends on the request.
3. The bank blocked my account due to KYC — what should I do?
First, respond in writing with the full document package. If the block is not lifted, file a complaint with the bank's SAC. If SAC does not respond — escalate to Banco de España.
4. Can the bank close my account because of a KYC/AML review?
Yes, if the documents never arrive. But the two situations differ. For an ordinary document request the bank should give a reasonable deadline and warn what happens if it goes unanswered. A measure under the money-laundering rules may come without any prior warning — but you are still owed, straight away or beforehand, at least a general reason citing Ley 10/2010, unless genuine confidentiality applies. A closure with no reason given at all is grounds for a complaint.
5. What is a titular real and why does the bank ask about it?
A titular real (beneficial owner) is the natural person who ultimately controls an asset. Under Ley 10/2010 (art. 4), banks must identify the beneficial owner. Relevant for corporate accounts and transactions handled by intermediaries.
Bank not accepting your documents, blocked your account, or not responding?
RightNOW reviews the request, prepares your document package, and drafts a formal complaint to the bank's SAC.
Submit a complaint to the bank →For informational purposes only. Every situation is individual — a proper assessment requires reviewing the specific documents and circumstances. Current as of June 2026.
Prefer to handle it yourself?
You can also use the official channels directly, often at no cost: Banco de España for bank complaints, DGSFP for insurance, OMIC or consumer services for consumer claims and Defensor del Pueblo for problems with public administration. Or go through the claim with RightNOW: we prepare the text, evidence and action path, then accompany the case through to the result.
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Checked by the RightNOW team · Change history
- Language review: wording and terms checked, corrections applied. Versions: RU, EN · Антон Белянский, QA review
- Real case reworked as a lesson: what was not obvious, how it ended, link to the decision.
- Page published.
This guide is general information about Spanish law, not a legal opinion on your case. Rules change and outcomes depend on your own facts and documents — check your situation before you act on it.