Knowing your customer is an essential asset in any business relationship, and it is even more crucial in the digital realm. In the financial sector, there are more and more procedures to ensure the verification and operations of customers. One of these processes is KYC.
What does KYC mean?
The acronym KYC stands for “Know Your Customer”.
Know Your Customer is a policy widely adopted by financial institutions to verify the identity of customers and thus comply with the different regulations that regulate these activities. The aim is for the customer to prove their identity and apply a series of controls to prevent illegal activities such as corruption or money laundering.
The financial institution must ensure that the identity of the customer is real, understand the nature of the transactions it is going to carry out and, in addition, share this information with the authorities.
Therefore, KYC is an increasingly important process and is constantly evolving, especially in today’s digital context. Although it is applied in different sectors, in banking it is a very rigorous and reliable process, as it is strictly regulated.
Why does a bank need KYC?
Know Your Customer (KYC) processes are essential for banks as they allow customers’ personal information to be obtained, verified and then classified according to its level of risk. This practice is important for several reasons:
- It offers security in the use of convenient, practical and secure digital services for both the customer and the bank.
- Strict compliance with KYC regulations. It avoids reputational damage and even huge financial penalties associated with money laundering scandals.
In addition, as it is a digitised process:
- It is capable of analysing thousands of documents in different languages. Something that exceeds the capacity of any human team.
- It allows you to expand your operational reach in a cost-effective and secure way through
AI-powered solutions, such as e-signatures.
Know Your Customer Process: How is the customer identified?
In the banking sector, where this procedure has been mandatory for years, most of its customers have carried out KYC verification in person. Therefore, the data and documents presented are compared personally by a representative of the institution. However, in recent years, the option to perform KYC identity verification online has also been enabled.
For example, identification can be carried out via a video call in which the user shows their identity documents and verifies their authenticity with a facial verification. Technological advances also make it possible to incorporate other biometric tests, such as identification through fingerprints or facial recognition tests.
Currently, with digitalisation, any industry can benefit from and support its protocols with the user verifications already carried out by the financial institution, which provides added value compared to other identification systems where the information is not cross-checked. For this purpose, there are tools or banking APIs for KYC that take care of streamlining this process.
Each time a customer opens an account or is registered, the KYC process is applied. APIs such as Auto Loans or Accounts
Main advantages of KYC in the banking sector
These are the main benefits that financial institutions obtain when using KYC:
- Operational efficiency: Automating KYC processes increases operational efficiency, reducing the time and resources needed for customer verification, allowing companies to focus on other critical areas of their operation.
- Improved security: It provides an additional layer of security in interactions, ensuring the protection of personal and financial data.
- Suspicious behaviour detection: KYC allows you to identify fraudulent activity and take action before it occurs. The customer’s activities are also continuously monitored to detect any suspicious behaviour or significant changes in their risk profile.
- Increased customer confidence: KYC improves the company’s relationship with the customer by establishing an environment of mutual trust. In addition, it ensures that only verified customers are incorporated, allowing businesses to build a more reliable and secure database.
The importance of KYC in customer relations and open banking

Know Your Customer is not a static process. Although it is essential to prove identity at the beginning of the business relationship, it is also necessary to maintain a continuous process that causes the least inconvenience. On the other hand, open banking uses KYC to ensure the identification and verification of users by sharing their financial data in a secure and controlled manner
Banks have to comply with legal requirements and for this they can ask the end customer to provide documentation at any time. This usually occurs when we have not submitted a document or if unusual activity is detected in the accounts, especially a transaction for a large amount.
In addition to checking the source of documents provided by customers, banks also check information against external sources such as numerous external blacklists and public databases, as well as collecting and integrating the necessary external data with internal systems.
Another aspect is that customer due diligence (CDD) is also crucial, as it comprises regular checks and constant monitoring of the information collected.
Finally, it is important to comply with the rules and that their implementation causes as little inconvenience as possible. Although KYC requirements are strict and create many challenges for a financial institution, the consequences of failing to comply with these rules can be severe.
What is the KYC regulation in 2025?
The KYC process is critical to establishing secure and reliable relationships between banks and customers, and it is also crucial to compliance with current regulations and laws designed to prevent fraud, money laundering and terrorist financing. These regulations vary according to the jurisdiction of each country, but they share the common goal of ensuring transparent and secure financial transactions.
In Spain, the Bank of Spain establishes that banks and financial institutions are obliged to implement KYC practices that allow them to collect the necessary information from their customers and to adopt the necessary measures to verify the veracity of this information.
KYC and AML (Anti-Money Laundering)
KYC and AML (Anti-Money Laundering) are intrinsically linked when it comes to identifying fraud and preventing risks associated with money laundering and terrorist financing. These regulations require rigorous verification of the customer’s identity and continuous evaluation of their activities.
This integration is one of the European Union’s AML measures
Know Your Customer regulations in Europe
- GDPR: The General Data Protection Regulation (GDPR) has the mission of ensuring the protection of personal data and the privacy of citizens of the European Union (EU) in all banking transactions.
- 5AMLD: the EU Anti-Money Laundering Directive (5AMLD) imposes strict requirements for financial transparency and transaction tracking, such as the obligation to carry out more detailed verifications.
- eIDAS: the eIDAS regulation sets out rules for electronic identification and trust services. It allows for mutual recognition of electronic identification between EU member states.