Unveiling the Hidden Rules: How Payment Compliance Secures Modern Finance

1. Entity Admission and Ongoing Management

Compliance starts with ensuring the payment institution itself is legally authorized. Companies must obtain a payment business licence or complete specific business filings with regulators such as the central bank, depending on the service type (online payments, card acquiring, prepaid cards, etc.).

Beyond the licence, a robust internal control system is required: internal policies, dedicated compliance and anti‑money‑laundering departments, regular audits, risk assessments, and staff training. These foundations enable all subsequent compliance actions.

Key checks include:

Verification of the main shareholders and ultimate beneficial owners to prevent illicit control of the licence.

Cross‑border business approvals and reporting requirements for foreign exchange and overseas payments.

2. User and Merchant Lifecycle Management

The core execution layer covers the entire user‑merchant journey, often summarized as the four pillars: KYC, KYB, KYT, and continuous monitoring.

2.1 KYC – Know Your Customer

Identity verification for individual users: collect and validate ID documents, biometrics, contact information, and assign a risk rating. Low‑risk users may only need basic real‑name verification, while high‑risk users (large or frequent transactions, suspicious IP changes) must provide income proof and transaction purpose.

2.2 KYB – Know Your Business

Deep due‑diligence on merchants: confirm legal entity status, business licence, corporate bank account, operating model, product legality, and website/app content. The goal is to block illegal activities such as gambling, pornography, or fraud.

Is the business licence genuine?

Is the corporate account owned by the merchant?

What does the website/app sell?

Is the business model legitimate?

2.3 KYT – Know Your Transaction

Even if identities are clean, transaction streams are monitored in real‑time or near‑real‑time. Rules flag abnormal patterns such as high‑frequency large‑amount trades, night‑time spikes, split transactions, or characteristics of fraud/gambling, triggering alerts for manual review.

2.4 KYA – Know Your Address (Blockchain)

In the on‑chain world, an address is the user’s identity. KYA analyses address behavior—transaction graphs, timing patterns, gas usage, and application preferences—to infer the real‑world controller. Tagged addresses (e.g., exchange hot wallets, known hacker groups) instantly affect the risk rating of interacting parties.

Example address tagging: 0x123...: Exchange A hot wallet 0x456...: Notorious hacker group 0x789...: Russian miner address

3. Core Risk Controls

3.1 Anti‑Money Laundering (AML)

Prevent and detect attempts to disguise illicit proceeds. Common tactics include:

Structuring (splitting large sums into many small transfers).

Fictitious transactions (self‑selling goods to launder money).

Cross‑border layering (using regulatory gaps between countries).

3.2 Counter‑Terrorist Financing (CTF)

Similar to AML but targets funds for terrorist activities. Institutions must match counterparties against global sanction lists and report any hits immediately.

3.3 Fraud Prevention

Protect users and merchants from direct financial loss. Typical fraud types:

Card theft and unauthorized use.

Telecom scams that lure users to transfer money to “safe accounts”.

Merchant fraud where sellers disappear after payment.

3.4 Sanctions Screening

Real‑time comparison of users, merchants, and counterparties with UN, OFAC, and Chinese sanction lists. Failure to screen results in immediate blocking and mandatory reporting.

4. Transaction and Fund Security Management

4.1 Payment API Security

APIs must be protected against abuse, tampering, and attacks through strict merchant onboarding, rate‑limiting, quota controls, and encrypted data transmission.

4.2 Reserve Fund Management

Historically, reserve funds were held in commercial banks (custody, collection, settlement accounts). Modern regulation mandates 100 % centralised custody in designated depository banks, prohibiting any misuse of the funds.

4.3 Settlement Compliance

Settlement processes must be transparent and direct: funds flow from user to merchant without intermediate capture (“second clearing”). Violations can lead to severe penalties.

4.4 Chain‑Level Data Protection

All sensitive payment data—card numbers, CVV, passwords, biometrics—must be protected in accordance with the Personal Information Protection Law and industry data‑security standards.

5. Data, Reporting, and Collaboration

5.1 Large‑Transaction and Suspicious‑Activity Reporting

Regulators require mandatory reporting of transactions exceeding thresholds (e.g., individuals > ¥50,000 per day, enterprises > ¥2 million) or any of 87 defined suspicious patterns, regardless of amount.

Key principle: better to over‑report than miss a report.

5.2 Record Retention

All user identity data and transaction logs must be stored for at least five years (longer if involved in legal investigations) to support anti‑money‑laundering and fraud investigations.

5.3 Compliance Technology (RegTech)

Specialised vendors provide encrypted storage, fast retrieval, and automated reporting tools to handle massive data volumes that would be impossible to search manually.

5.4 Regulatory Reporting & Disclosure

Periodic (monthly, quarterly, annual) submissions to the central bank, foreign‑exchange authority, and other regulators include business data, financial statements, and material events.

5.5 Risk Information Sharing

Industry‑wide platforms enable sharing of black‑listed merchants, emerging fraud patterns, and coordinated responses with clearing houses and law‑enforcement, turning competitors into allies against illicit actors.

6. Emerging and Extended Compliance Areas

6.1 Cross‑Border Data Flow

Providing services to overseas users or using foreign servers triggers data‑export security assessments and personal‑information protection certifications. Conflicts between GDPR and China’s Cybersecurity Law must be reconciled.

6.2 Crypto and Virtual‑Asset Services

Domestic payment institutions are prohibited from offering settlement or clearing for virtual‑currency transactions. Ongoing monitoring of global regulatory trends is essential.

6.3 Advertising and Marketing Compliance

Payment product promotions must avoid false or exaggerated claims, must not promise guaranteed returns, and must clearly disclose risks and responsible parties.

6.4 Consumer Rights Protection

Transparent fee disclosure, fair dispute‑resolution mechanisms, accessible complaint channels, and strict privacy safeguards are required to protect end‑users and build trust.

The overarching challenge is the classic “impossible triangle” of security, efficiency, and user experience: higher security demands more verification and slower processing, while speed and seamless UX require sophisticated backend techniques to keep risk in check.

In the long run, robust compliance is not merely a cost but a competitive advantage, granting broader licences, better banking partnerships, and greater market confidence.