Know Your Customer (KYC): Key Definitions and Regulatory Insights

Financial crime remains a global problem. The United Nations Office on Drugs and Crime estimates that money laundering may account for 2% to 5% of global GDP each year (roughly $800 billion to $2 trillion), although the true total is inherently difficult to measure. Separately, the Global Anti-Scam Alliance estimates that scams cost victims about $442 billion worldwide in 2025.

So, what are businesses and financial institutions doing about it? Know Your Customer, or KYC, is one of the core tools used to verify customers, assess risk, and help prevent fraud, money laundering, and terrorist financing. It has long been embedded in anti-money-laundering rules in many countries, but the process is changing quickly as businesses adopt electronic identity verification, biometrics, reusable digital IDs, and digital-wallet-based credentials.

In this guide, I explain what KYC is and how it works, along with the main types of checks, who needs to carry them out, and the laws that shape KYC requirements. I also cover eKYC, digital IDs, and the EU Digital Identity Wallet (EUDI Wallet), including how the updated eIDAS framework could change identity verification and customer onboarding across Europe.

What is KYC?

KYC is an acronym for Know Your Customer. Financial institutions and businesses often use the KYC process to lower the risk of financial loss, prevent criminal activity, and stay compliant with local laws.

The KYC process starts with collecting personal information, including name, email, date of birth, ID, and other details to verify your identity. Money laundering, terrorism funding, and fraud efforts have all been caught and prevented at some point, thanks to proper KYC procedures.

Governments often regulate and enforce KYC because of its effectiveness. The UK, USA, Australia, Canada, the EU, and many others have made KYC a legal requirement.

There is also Know Your Business (KYB), or Corporate KYC, and Know Your Gamer (KYG) – the same idea for business and gaming clients, rather than a general consumer. However, these companies may occasionally have to follow unique laws in certain countries.

KYC, eKYC, and digital IDs

Traditional KYC typically involves uploading an ID document and completing a selfie or liveness check. eKYC digitizes and automates that process through document verification, biometrics, database checks, and risk screening.

Digital IDs provide another option: customers can verify their identity using a government- or bank-issued eID instead of repeatedly uploading physical documents. While they can speed up onboarding, they don’t replace broader KYC duties, such as sanctions screening, risk assessment, beneficial ownership checks, and transaction monitoring. The EU Digital Identity Wallet (EUDI Wallet) is expected to extend this model across the EU by enabling people to share verified identity data or selected attributes, such as proof of age, with greater control over what data is disclosed.

Understanding KYC in Business

Businesses need to know who you are for security and compliance purposes. In a KYC check, a business might:

• Check if your delivery address matches your billing details as part of fraud prevention
• Request ID documents with a photograph, usually a passport or driver's license
• Analyze your account activity and transactions to identify unusual or potentially suspicious behavior
• See if your IP address is linked to any unusual activity as part of wider fraud and account-security checks
• Screen customers against sanctions lists and politically exposed person (PEP) lists
• Ask about the purpose and expected use of an account or business relationship

In many countries, KYC isn’t an option for regulated businesses – it’s a legal requirement to deter fraud, money laundering, and terrorist financing. KYC regulations differ depending on the country you’re in and the type of company you own. But it’s not uncommon for a business to use KYC or other fraud-prevention checks when you:

• Do online shopping (although retailers may use fraud checks rather than formal KYC)
• Open a bank account
• Buy, sell, or use cryptocurrency through a regulated platform
• Apply for insurance
• Take out a loan
• Purchase real estate
• Apply for a loan or credit card
• Make a large money transfer
• Buy an insurance policy
• Purchase real estate

KYC for Companies

When you integrate advanced KYC procedures into your company, you can:

• Improve compliance. eKYC technology can help businesses adapt their verification processes to regulatory changes
• Lower onboarding time. Automated checks, such as facial recognition, can reduce the time needed to verify identity without lowering security standards
• Increase fraud detection. Advanced analytics can help identify potential fraud attempts and reduce the need for manual review

KYC platforms such as iDenfy can help businesses automate parts of the process through document verification, selfie and liveness checks, facial matching, and AML screening. These tools can reduce manual work and support remote onboarding, while businesses remain responsible for meeting their own regulatory obligations.

KYC for Clients

KYC also affects customers. It:

• Builds trust. When customers know businesses are following regulations and protecting their accounts and personal data, there’s an immediate trust built
• Speeds up onboarding. Quicker transactions aren’t just beneficial for companies, clients value their time too
• Improves customer experience. Naturally, when you increase security, speed up transactions, and build trust, you get more satisfied customers
• May give customers greater control over shared data when a digital ID or digital wallet supports selective disclosure

KYC Requirements for Banks

Banks use KYC to protect against criminal activity, damages, and non-compliance fines. In a KYC process, banks often:

• Look for a photo ID to verify your identity
• Compare your name and other customer details to sanctions, politically exposed person (PEP), and other relevant risk lists
• Verify your listed address is valid and you’re able to collect mail where proof of address is required
• Use transaction monitoring to identify unusual or potentially suspicious activity
• Monitor your IP addresses to prevent unauthorized access attempts as part of wider fraud and account-security measures
• Ask for information about the purpose of the account, expected activity, or source of funds, depending on the customer’s risk level
• Identify and verify beneficial owners when a business or other legal entity opens an account

For most countries, like businesses, banks are legally required to implement KYC processes to prevent illegal activities such as money laundering and fraud. You might get asked for additional info or to follow extra verification steps when you:

• Open a new bank account
• Apply for loans or credit cards
• Make a big money transfer

Banks have different KYC procedures for different situations. Customer Identification Program (CIP) and Customer Due Diligence (CDD) are common choices.

Customer Identification Program (CIP)

The CIP is the process US banks and certain other financial institutions use to get to know you. You provide your name, address, date of birth, and government ID, such as a passport or driving license. It’s also not uncommon for you to need a utility bill to prove your address.

Once the bank verifies your identity, it may carry out further fraud, credit, or risk checks, depending on the account or service you are applying for. What’s your credit score? Is there any record of legal issues in the past? A bank can gauge the risk associated with you in many ways and decide whether doing business with you is the right decision.

Luckily, compared to other KYC procedures, CIP regulations are flexible. It’s unlikely that banks are analyzing your entire background when you open a savings account, as there’s generally minimal risk. However, the banks' KYC processes become much more comprehensive if you handle large transactions or are seen as high risk.

Customer Due Diligence (CDD)

CDD is another critical KYC check banks use. There are three levels, with stricter checks for higher-risk individuals:

• Simplified Due Diligence (SDD). For low-risk customers, banks may apply fewer or less intensive checks where permitted by local law. They still need enough information to identify and verify the customer, such as your name, email, address, and photo ID (passport or driver's license).
• Standard Customer Due Diligence (CDD). Most bank clients go through the CDD process, where banks identify and verify the customer, assess the purpose of the relationship, and may review source-of-funds information and expected account activity.
• Enhanced Due Diligence (EDD). High-risk customers are subject to EDD with detailed background checks, advanced account monitoring, and comprehensive fund analysis.

Innovative Approaches to KYC

In the past, KYC was time-consuming and expensive – everything was paper-based and human-reviewed. Now, the whole process has been streamlined thanks to electronic Know Your Customer (eKYC).

Electronic KYC (eKYC) Overview

eKYC is known to improve:

• Speed. It connects with the identity verification software and data sources to reduce processing times, sometimes from days to minutes.
• Accuracy. Automated systems reduce manual data-entry errors and help companies collect more consistent information.
• Cost. Less reliance on physical storage, manual processing, or paperwork requirements can lower processing costs.
• Adaptability. The best eKYC systems are built for quick, easy updates, making regulatory changes easier to implement.
• Integration. eKYC systems can integrate with anti-money laundering (AML) databases and government verification services, which can support early detection and prevention.
• Reporting. Advanced eKYC can support customer tracking, auditing, and reporting, reducing the risk of compliance gaps and related penalties.
• Customer experience. The improved efficiency of eKYC with faster verification and lower costs can improve the customer journey.

eKYC is commonly used for heavily regulated industries, including banking, cryptocurrency, and online gaming. However, eKYC technology supports KYC compliance. It doesn’t replace a business’s responsibility to apply appropriate customer due diligence, risk assessment, and ongoing monitoring.

Digital IDs and the EUDI Wallet

Digital IDs offer another way to complete identity verification. Instead of uploading photos of physical documents each time, customers can verify their identity using a government- or bank-issued electronic ID, such as a national eID or BankID.

The EU Digital Identity Wallet (EUDI Wallet) is expected to expand this approach across Europe. It will allow people to store and share verified identity information and other credentials from a mobile wallet. For example, a customer could share proof that they are over 18 without necessarily disclosing their full date of birth or a complete identity document.

EU Member States are expected to make at least one EUDI Wallet available by the end of 2026. For KYC, this could make remote onboarding faster and reduce repeated document uploads, since a business supporting the wallet can meet its verification needs with the shared credential. However, it doesn’t replace broader KYC requirements, such as sanctions screening, risk assessment, beneficial owner checks, or ongoing transaction monitoring.

Mobile Verification Methods

Most people have phones with cameras, fingerprint scanners, and GPS. Our phones are designed to make sharing this information easy. So, it only makes sense that many businesses are opting to use mobile KYC to simplify verification processes and easily collect vital info such as:

• Geo-location. Your phone number, IP address, and GPS data can help estimate your real location.
• Device Information. Your phone model, IMEI number, usage patterns, and operating system can be used as device and fraud-risk signals, where permitted.
• Documentation. Mobile apps allow customers an easy way to send photos of verification documents.
• Biometrics. Facial recognition and fingerprinting technologies are becoming more common in modern smartphones, enabling businesses to perform more advanced checks, such as biometric authentication or selfie-to-ID comparisons.

Businesses should collect only the data needed for the specific verification or fraud-prevention purpose, and handle location, device, and biometric data in accordance with applicable privacy and data protection laws.

You can learn more about advancements in mobile verification technology in our comprehensive iDenfy review.

Facial Recognition Technology in KYC

Thanks to machine learning, modern-day eKYC verification is often faster and more automated. Facial recognition technology has played a big part in this, allowing businesses to:

• Improve security. With appropriate testing and safeguards, AI systems can compare a live selfie with an identity-document photo and help detect some impersonation attempts.
• Speed up onboarding. Automated facial recognition can reduce reliance on manual verification processes, which can enable faster onboarding.
• Enhance user experience. User-friendly apps and automated technology allow customers to verify their identity in just a few steps.
• Reduce costs. Reducing manual review in suitable cases typically means lower overheads.

However, facial recognition should not be treated as infallible. Performance can vary by provider, image quality, demographic group, and testing conditions, so businesses should use liveness detection, fraud controls, human review, and accessible alternatives where appropriate.

KYC Laws and Regulations Around the World

I compiled the AML/CTF legal frameworks that include KYC obligations, regulatory bodies, and examples of covered sectors across various countries using government resources and other trusted sources. Below is a table of what I found.

It’s important to note that the possible consequences below are not fixed penalties for every KYC failure. The outcome can vary based on the country, business type, severity, and duration of the breach, whether it was deliberate, and the rules that apply to the specific activity. Failure to meet KYC, customer due diligence, or wider AML/CTF obligations can result in regulatory warnings, remediation requirements, administrative or civil fines, license restrictions, and, in serious cases, criminal prosecution.

Also, this is a simplification of a very complex subject with lots of potential factors at play. To ensure you’re fully compliant with KYC regulations, it’s best to consult regulatory compliance experts or an accredited legal advisor for personalized advice.

Country	Key Legal Framework	Regulatory Body	Examples of sectors subject to AML/KYC rules	Possible consequences of non-compliance
Australia	Anti-Money Laundering and Counter-Terrorism Financing Act (AML/CTF Act)	AUSTRAC	Banks and financial institutions, casinos and gambling services, cryptocurrency exchanges, bullion dealers, legal and accounting firms, real-estate-related services, and trust and company service providers	Regulatory action, enforceable undertakings, infringement notices, civil penalties, and criminal penalties for serious offenses
Brazil	Law No. 9,613/1998 (Money Laundering Prevention)	COAF	Financial institutions, insurance companies, payment and credit card administrators, property distributors, leasing, and factoring companies	Administrative sanctions and fines, possible restrictions on operations, and criminal penalties for money-laundering-related offenses
Canada	Proceeds of Crime (Money Laundering) and Terrorist Financing Act (PCMLTFA)	FINTRAC	Money services businesses, real estate brokers and developers, insurance companies, professional services such as law firms and accounting firms, casinos and gaming establishments	Administrative monetary penalties, criminal charges, fines, and imprisonment for specified offenses. FINTRAC identifies failure to verify client identity and keep required records among potential criminal non-compliance offenses
European Union	National AML laws implementing the EU AML framework, Regulation (EU) 2024/1624, the Anti-Money Laundering Regulation (AMLR), applies from 10 July 2027, Directive (EU) 2024/1640 (AMLD6)	National competent authorities and financial intelligence units; the European Banking Authority (EBA) has a transitional AML/CFT role, while the Anti-Money Laundering Authority (AMLA) is part of the new framework	Banks and other financial entities, asset managers, legal professionals in specified transactions, real-estate professionals, crypto-asset service providers, gambling services, and trust and company service providers	Administrative fines, remediation orders, business restrictions, professional sanctions, and criminal penalties under applicable Member State law
India	Prevention of Money Laundering Act (PMLA)	Financial Intelligence Unit–India (FIU-IND), with sectoral regulators including the Reserve Bank of India (RBI)	Banks and other financial institutions, payment-system participants, intermediaries, and other reporting entities covered by the PMLA	Regulatory action, fines, restrictions, and criminal penalties for applicable AML or money-laundering offenses
Mexico	Federal Law for the Prevention of Illicit Operations with Resources of Illicit Origin	Financial Intelligence Unit (UIF)	Vulnerable activities, including certain real-estate, gambling, precious-metals, vehicle, and professional-service transactions	Administrative fines, business restrictions, and criminal penalties are imposed for conduct that breaches AML rules or involves illicit operations
New Zealand	Anti-Money Laundering and Countering Financing of Terrorism Act (AML/CFT Act)	Department of Internal Affairs, Financial Markets Authority, and Reserve Bank of New Zealand, depending on the reporting entity	Financial organizations, virtual-asset service providers, casinos, accountants, lawyers, and high-value dealers	Warnings, enforceable undertakings, civil penalties, regulatory action, and criminal penalties for serious non-compliance
South Africa	Financial Intelligence Center Act (FICA)	Financial Intelligence Center (FIC)	Financial institutions, cryptocurrency businesses, legal professionals, brokers, casinos, dealers in precious stones and metals, real-estate agents, and other accountable institutions	Administrative sanctions and fines, directives or remedial measures, and criminal penalties for specified offenses
United Kingdom	Money Laundering, Terrorist Financing and Transfer of Funds Regulations 2017 (as amended)	Multiple supervisory authorities, including the FCA for relevant financial firms, HMRC for some supervised businesses, and professional-body supervisors	Legal and professional services, real estate, gaming and casinos, crypto-asset businesses, payment processors, e-money providers, digital-wallet providers, and financial organizations	Regulatory enforcement, fines, restrictions on conducting business, professional sanctions, and criminal penalties, depending on the breached law and conduct
United States	Bank Secrecy Act (BSA) and USA PATRIOT Act	FinCEN and federal functional regulators, including the OCC, Federal Reserve, FDIC, NCUA, SEC, and CFTC, where relevant	Financial institutions, money services businesses, certain crypto businesses, casinos, insurance companies, and other covered financial institutions	Civil monetary penalties, consent orders, remedial requirements, regulatory action, and criminal penalties for willful or other specified BSA/AML violations. FinCEN has imposed nine-figure civil penalties for willful BSA violations
Rest of the World	Various national laws	Various financial regulators and financial intelligence units	Various organizations	Fines, remediation orders, business restrictions, license consequences, and possible criminal penalties, depending on local law

EU digital identity update: The European Digital Identity Framework, established by Regulation (EU) 2024/1183, is separate from the EU’s AML rules. It requires EU Member States to make at least one EU Digital Identity Wallet available by the end of 2026. The wallet may help a business verify a customer’s identity or selected attributes, but it does not replace AML/KYC obligations, such as customer due diligence, beneficial-owner checks, sanctions screening, or ongoing monitoring.

The Role of KYC in Emerging Industries

KYC procedures are crucial in emerging industries like cryptocurrency and online gaming. These sorts of businesses can be more vulnerable to fraud, money laundering, and identity-related abuse, and KYC offers a vital layer of protection.

KYC in cryptocurrency markets

Cryptocurrency exchanges use KYC to verify customer identities. The process may involve collecting government-issued IDs, proof of address, and even biometric data or, in some cases, liveness checks. KYC is essential to prevent the use of cryptocurrency for money laundering and terrorist financing, support compliance with AML rules, and help regulated platforms identify suspicious activity.

KYC requirements in cryptocurrency vary from country to country:

• In the United States, cryptocurrency exchanges that qualify as money transmitters generally must register with FinCEN as money services businesses and comply with Bank Secrecy Act obligations. These can include maintaining an AML program, keeping records, monitoring activity, and filing Suspicious Activity Reports (SARs) when required.
• In the European Union, crypto-asset service providers (CASPs) must comply with AML/CFT requirements. The EU’s Transfer of Funds Regulation also extends “travel rule” requirements to crypto-asset transfers, requiring relevant originator and beneficiary information to accompany transfers. The EU’s newer AML framework will further harmonize obligations when the AMLR begins applying in July 2027.

Cryptocurrency KYC processes have proven useful in helping regulated exchanges identify suspicious activity, investigate potential fraud, and respond to lawful requests from authorities. However, KYC alone does not prevent all crypto-related crime, particularly where criminals use unregulated services, stolen identities, or self-hosted wallets.

KYC in the online gaming industry

In online gaming, KYC is key to ensuring platform security. It involves verifying user identity, age, location, and source of funds where required by the product, jurisdiction, and customer-risk profile. These checks help prevent fraud and money laundering, block minors from age-restricted gambling services, block users in certain regions, and comply with anti-money laundering laws (AML).

Like in the crypto industry, KYC requirements in online gaming depend on local laws:

• In the United Kingdom, the UK Gambling Commission (UKGC) ensures licensed gambling operators follow customer identity and age-verification requirements under the Gambling Act 2005 and the Commission’s License Conditions and Codes of Practice. Operators must verify a customer’s identity before allowing them to gamble; the information includes, but is not limited to, the customer’s name, address, and date of birth.
• In the United States, state-specific laws regulate gaming KYC procedures. For example, gaming platforms may need to verify identity, age, and location in states where online gambling is legal. The exact requirements vary by state and type of gambling service.

KYC can help crypto and online-gaming businesses make it harder for people to open accounts using stolen or fabricated identities, detect accounts linked to suspicious behavior, meet age and location requirements, and investigate unusual transactions. However, businesses usually combine KYC with other controls, including transaction monitoring, sanctions screening, device and IP-risk analysis, geolocation tools, account-security measures, and manual review.

Future Trends of KYC

As AI, blockchain, biometrics, and natural language processing (NLP) continue to improve, so does our ability to verify and evaluate information automatically. With automation supporting some manual checks, KYC costs may be reduced, and regulators can hold companies to higher standards.

This means the future of KYC is likely to involve faster, more automated, and more privacy-conscious verification. Advancements in facial recognition, image processing, liveness detection, document-authenticity checks, and digital IDs could help customers complete onboarding faster, companies improve detection, and government agencies identify and investigate more financial crime.

Digital IDs are likely to play a bigger role, too. Instead of repeatedly uploading photos of physical documents, customers may be able to share verified credentials from government- or bank-issued digital IDs. In the EU, the EUDI Wallet is expected to let people share selected verified information, such as proof of age, without disclosing unnecessary personal data.

However, technology works for criminals, too. AI can be used to create fake documents, synthetic identities, and deepfake images or videos designed to bypass remote KYC checks. Businesses will need layered protections (including document-authenticity checks, liveness detection, digital credentials, transaction monitoring, and human review for higher-risk cases) to keep up.

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