Buying property in Spain is not only a legal and financial transaction. It is also subject to anti-money-laundering checks.
For international buyers, this usually means one thing: before the purchase can complete, the buyer must prove who they are, where their money comes from and why the transaction makes sense.
This process is commonly called AML/KYC.
AML means Anti-Money Laundering.
KYC means Know Your Customer.
Last reviewed: 3 July 2026
Jurisdiction: Spain
Important: this article is general information only. It is not legal, tax or financial advice. Buyers should confirm their exact requirements with their lawyer, bank and developer or seller-side professional.
Quick Summary
- AML/KYC checks are normal in Spanish property purchases, especially for international buyers.
- Spanish banks, developers, real estate professionals, lawyers and notaries may all request documents.
- The most important part is usually source of funds: proving where the purchase money came from.
- New-build purchases can involve an extra compliance layer because the developer must also approve the buyer.
- Missing, inconsistent or untranslated documents can delay the reservation, private contract or completion.
- Buyers should prepare documents before transferring large sums to Spain.
Quick comparison
| Check | What it means | Who may ask for it |
|---|---|---|
| Identity check | Proving who the buyer is | Bank, lawyer, developer, notary |
| KYC form | Buyer profile, tax residence, occupation, purpose of purchase | Developer, bank, lawyer |
| Source of funds | Evidence showing how the buyer obtained the money | Bank, developer, lawyer |
| Source of wealth | Wider explanation of the buyer’s accumulated wealth | Bank or compliance team, especially for larger purchases |
| UBO check | Identifying the real owner behind a company | Bank, developer, lawyer |
| PEP / sanctions screening | Checking political exposure or sanctions risk | Bank, developer, compliance team |
| Enhanced due diligence | Extra checks for higher-risk cases | Bank, developer, lawyer |
Why AML/KYC matters in Spanish property purchases
Spanish property transactions involve large sums, international transfers and sometimes buyers from several jurisdictions.
For this reason, professionals involved in the transaction may be legally required to check:
- buyer identity;
- tax residence;
- occupation or business activity;
- source of funds;
- source of wealth;
- purpose of the purchase;
- whether the buyer is acting for someone else;
- whether a company buyer has an identifiable ultimate beneficial owner;
- whether the buyer is politically exposed or subject to sanctions.
These checks are not optional customer service. They are part of the compliance framework used to prevent money laundering and terrorist financing.
Who checks the buyer?
Several parties may ask for similar documents.
1. The Spanish bank
The bank checks the buyer when opening an account, receiving funds, processing transfers or approving a mortgage.
The bank may ask for:
- passport or national ID;
- NIE;
- proof of address;
- tax residence;
- employment or business details;
- bank statements;
- tax returns;
- documents proving source of funds;
- explanation of large transfers.
If the bank cannot verify the origin of funds, it may delay, block or refuse the transaction.
2. The developer
In a new-build purchase, the developer is often directly involved in AML/KYC checks.
This matters because the buyer may need developer compliance approval before signing the private purchase contract or making stage payments.
The developer may ask for:
- buyer identity documents;
- KYC form;
- proof of address;
- source-of-funds documents;
- company documents, if buying through a company;
- proof that transfers come from the buyer’s own account.
3. The lawyer
The buyer’s lawyer may also ask for AML/KYC documents before accepting the client or handling funds.
This is normal.
A lawyer may need to verify the buyer and understand the origin of the money before assisting with the transaction.
4. The notary
The notary is involved at completion and checks the formal transaction documents.
The notary may verify identity, payment method and documentation connected to the transaction.
New-build vs resale: what changes?
AML/KYC applies to both resale and new-build purchases.
The difference is practical.
Resale purchase
In a resale purchase, the buyer is usually checked by:
- bank;
- lawyer;
- notary;
- sometimes the real estate agency or intermediary.
New-build purchase
In a new-build purchase, the buyer may also be checked directly by the developer.
This can create a dual process:
- the bank checks the money flow;
- the developer checks the buyer and source of funds before accepting the purchase.
This is why new-build buyers should prepare AML/KYC documents early.
The most important issue: source of funds
The most common delay is not proving identity. It is proving where the money came from.
A buyer must be able to show a clear paper trail from the original source to the funds used for the purchase.
In practice, the compliance team wants to understand:
- how the buyer earned or received the money;
- where the money was held;
- whether the money matches the buyer’s declared income or wealth;
- whether the transfer comes from the buyer’s own account;
- whether third parties are involved.
A simple statement such as “personal savings” is usually not enough if the amount is large.
Documents by source of funds
| Source of funds | Typical documents |
|---|---|
| Salary savings | Recent payslips, employment contract, tax return, bank statements showing savings accumulation |
| Self-employment income | Tax returns, business accounts, quarterly tax filings, business bank statements |
| Company dividends | Company accounts, corporate tax return, dividend certificate, bank statement showing receipt |
| Sale of property | Sale deed, completion statement, bank statement showing proceeds, tax proof if relevant |
| Sale of shares or investments | Broker statement, sale confirmation, bank statement showing proceeds |
| Inheritance | Will or inheritance deed, probate / adjudication documents, bank statement showing receipt, tax proof if relevant |
| Gift / donation | Gift deed or declaration, donor identity, proof of transfer, donor source of funds, tax proof if relevant |
| Bank loan | Loan agreement, bank approval, transfer evidence |
| Private loan | Signed loan agreement, lender identity, lender source-of-funds evidence, transfer proof |
| Crypto converted to euros | Exchange records, wallet history, acquisition evidence, tax reporting where relevant |
| Company purchase | Incorporation documents, company registry certificate, UBO declaration, company accounts, tax returns, board approval if needed |
Requirements vary by bank, developer and buyer profile. The safest approach is to prepare more evidence than the minimum requested.
What is source of wealth?
Source of funds explains where the specific purchase money came from.
Source of wealth explains how the buyer built their overall wealth.
For example:
- source of funds: money from selling a property in London;
- source of wealth: long-term employment income, business ownership and prior property gains.
For larger purchases or complex profiles, the bank or developer may ask for both.
What is UBO?
UBO means Ultimate Beneficial Owner.
If a company buys the property, the compliance team needs to know who ultimately owns or controls that company.
A company buyer may need to provide:
- incorporation deed;
- company registry extract;
- company tax number;
- articles of association;
- shareholder structure;
- UBO declaration;
- director identification;
- company accounts;
- proof of company funds.
Buying through a company can be legitimate, but it usually increases documentation requirements.
What is a PEP?
PEP means Politically Exposed Person.
This can include people who hold, or have held, important public functions, as well as some family members or close associates.
Being a PEP does not automatically prevent a purchase.
It usually means the bank or developer will apply enhanced due diligence and ask for more evidence.
When enhanced due diligence may apply
Extra checks may be required if:
- the buyer is a PEP;
- funds come from a high-risk jurisdiction;
- the buyer uses a complex company structure;
- funds come from several countries;
- there are third-party payments;
- documents are inconsistent;
- the purchase price is high compared with declared income;
- the buyer cannot clearly explain the origin of funds;
- crypto assets are involved;
- the buyer is not physically present and remote onboarding is used.
Enhanced due diligence usually means more questions, more documents and a longer timeline.
Common problems that delay purchases
The most common AML/KYC problems are:
- funds sent from someone else’s account;
- unclear source of savings;
- missing tax returns;
- large cash deposits in bank statements;
- documents in the wrong language;
- no sworn translation where required;
- company ownership not clearly explained;
- gift or private loan without formal documentation;
- crypto gains without acquisition records;
- buyer waits too long before gathering documents;
- documents do not match the KYC form.
Most delays can be avoided by preparing early.
Translation and certification
Documents not in Spanish may need translation.
In some cases, the bank, developer or lawyer may request:
- sworn translation into Spanish;
- notarised copies;
- apostille;
- certified bank documents;
- official company registry documents.
Buyers should not assume that a PDF screenshot is enough. Compliance teams often need formal, verifiable documents.
When to start AML/KYC preparation
Start before reservation if possible.
At minimum, start before transferring significant funds to Spain.
The best time to prepare is when the buyer is still defining the budget and purchase structure.
For a smooth process, prepare:
- passport or ID;
- NIE, if already obtained;
- proof of address;
- latest tax return;
- recent bank statements;
- proof of income;
- source-of-funds documents;
- company documents, if applicable;
- gift or loan documents, if money comes from family;
- translations where needed.
How long does AML/KYC take?
There is no fixed timeline.
A simple salaried buyer with clean savings and complete documents may pass quickly.
A buyer with company income, asset sales, private loans, inheritance, crypto or several jurisdictions may take longer.
In practice, buyers should allow several weeks for document review, especially in new-build purchases where both the developer and bank may run checks.
The timeline depends mainly on:
- completeness of documents;
- complexity of source of funds;
- bank response time;
- developer compliance process;
- need for translations;
- whether enhanced due diligence applies.
Can AML/KYC stop the purchase?
Yes.
If the bank, developer or other obligated professional cannot verify the buyer or source of funds, the transaction can be delayed or stopped.
Possible consequences include:
- bank refuses incoming funds;
- bank asks for more documentation;
- developer does not issue compliance approval;
- private purchase contract is delayed;
- completion cannot proceed;
- suspicious activity may be reported to SEPBLAC.
This is why buyers should treat AML/KYC as a core part of the purchase process, not as late-stage paperwork.
Practical checklist for buyers
Before reserving or transferring funds, buyers should be able to answer:
- Who is buying: individual, couple or company?
- Where is the buyer tax resident?
- Where will the purchase money come from?
- Is the money already in the buyer’s own account?
- Can the buyer prove the original source?
- Are any family gifts or private loans involved?
- Are any companies or trusts involved?
- Are any funds coming from outside the EU/EEA?
- Are any documents not in Spanish or English?
- Is a mortgage being used?
- Does the developer require its own KYC approval?
- Has the bank confirmed what it needs before receiving funds?
What Directimo buyers should do
For international buyers, the safest approach is:
- Decide the purchase structure early.
- Use the buyer’s own bank account where possible.
- Avoid unexplained third-party payments.
- Prepare source-of-funds evidence before reservation.
- Ask the Spanish bank what documents it needs before sending funds.
- Ask whether the developer has its own KYC process.
- Use an independent lawyer to coordinate documents.
- Keep all transfer records and tax documents.
A well-prepared buyer is less likely to face delays between reservation, private contract and completion.
Bottom line
AML/KYC is a normal part of buying property in Spain.
For international buyers, the key requirement is not only proving identity. It is proving where the money came from.
The earlier the buyer prepares source-of-funds documents, the smoother the purchase is likely to be.
Before committing to a property, buyers should know:
- who will run AML/KYC checks;
- what documents are needed;
- whether the developer must approve the buyer;
- whether the bank will accept the funds;
- whether translations or company documents are required.
This is especially important for new-build purchases, high-value purchases, company buyers and buyers whose funds come from several sources.
