Navigating the Acronyms of Payments and Fintech
The payments and fintech industries use hundreds of acronyms to describe technologies, compliance frameworks, payment rails, and financial operations.
Terms like ACH, KYC, PFaaS, RTP, and ISO 20022 appear across payment platforms, regulatory guidance, developer documentation, and financial reporting. For professionals working in fintech, marketplaces, SaaS platforms, or payment infrastructure, understanding this terminology is essential.
This glossary includes 200 common payment and fintech acronyms and their meanings, providing a quick reference for navigating the language of modern financial technology.
200 Payment & Fintech Acronyms and Their Meanings
| Acronym | Meaning |
| 1099 | Independent Contractor Tax Form (U.S.) |
| 3DS | 3-D Secure (Three-Domain Secure authentication) |
| A2A | Account-to-Account (transfer between accounts you own) |
| ABA | American Bankers Association (ABA routing number) |
| ACH | Automated Clearing House |
| ACS | Access Control Server (issuer’s 3DS authentication server) |
| ADP | Automatic Data Processing (payroll company) |
| AI | Artificial Intelligence |
| AML | Anti-Money Laundering |
| AML5 | 5th Anti-Money Laundering Directive (EU) |
| API | Application Programming Interface |
| AP | Accounts Payable |
| APR | Annual Percentage Rate |
| APY | Annual Percentage Yield |
| AR | Accounts Receivable |
| ARR | Annual Recurring Revenue |
| ATM | Automated Teller Machine |
| ATO | Account Takeover (fraudulent account access) |
| AVS | Address Verification Service |
| B2B | Business-to-Business |
| B2C | Business-to-Consumer |
| B2C2 (B2B2C) | Business-to-Business-to-Consumer (indirect model) |
| BaaS | Banking as a Service |
| BACS | Bankers’ Automated Clearing System (UK) |
| BAU | Business As Usual |
| BPM | Business Process Management |
| BIN | Bank Identification Number |
| BIC | Bank Identifier Code (SWIFT code) |
| BTC | Bitcoin (cryptocurrency) |
| CAGR | Compound Annual Growth Rate |
| CAC | Customer Acquisition Cost |
| CAPEX | Capital Expenditure |
| CBDC | Central Bank Digital Currency |
| CCPA | California Consumer Privacy Act |
| CEX | Centralized Exchange (crypto) |
| CeFi | Centralized Finance (centralized crypto services) |
| CFO | Chief Financial Officer |
| CIO | Chief Information Officer |
| CLS | Continuous Linked Settlement (FX settlement system) |
| CLV | Customer Lifetime Value |
| CMO | Chief Marketing Officer |
| CNP | Card-Not-Present (transaction) |
| COO | Chief Operating Officer |
| CP | Card-Present (transaction) |
| CRO | Conversion Rate Optimization |
| CSR | Corporate Social Responsibility (or Customer Service Rep) |
| CTO | Chief Technology Officer |
| CTR | Currency Transaction Report |
| DAO | Decentralized Autonomous Organization |
| DCC | Dynamic Currency Conversion |
| DeFi | Decentralized Finance |
| DEX | Decentralized Exchange |
| DR | Disaster Recovery |
| DPA | Data Processing Agreement |
| DSO | Days Sales Outstanding |
| EDD | Enhanced Due Diligence (extra KYC for high-risk) |
| EFT | Electronic Funds Transfer |
| EFTPOS | Electronic Funds Transfer at Point Of Sale |
| EMV | Europay, Mastercard, Visa (chip card standard) |
| ERP | Enterprise Resource Planning (software) |
| ETH | Ethereum (cryptocurrency) |
| EWA | Earned Wage Access |
| FBO | For Benefit Of (account designation) |
| FCA | Financial Conduct Authority (UK) |
| FDIC | Federal Deposit Insurance Corporation (US) |
| Fedwire | Federal Reserve Wire Network (U.S. RTGS) |
| FFIEC | Federal Financial Institutions Examination Council |
| FI | Financial Institution |
| FIDO | Fast ID Online (authentication standard) |
| FinCEN | Financial Crimes Enforcement Network |
| FINRA | Financial Industry Regulatory Authority (US) |
| FPS | Faster Payments Service (UK instant payments) |
| FSA | Flexible Spending Account (pre-tax health account) |
| FT (FinTech) | Financial Technology (industry itself) |
| FUD | Fear, Uncertainty, and Doubt (slang for negative sentiment) |
| GDPR | General Data Protection Regulation (EU) |
| GMV | Gross Merchandise Volume (total sales volume) |
| GTM | Go-To-Market (strategy) |
| HODL | “Hold On for Dear Life” (crypto slang for holding assets) |
| HSA | Health Savings Account (pre-tax health account) |
| HSM | Hardware Security Module |
| IBAN | International Bank Account Number |
| ICO | Initial Coin Offering |
| IEO | Initial Exchange Offering |
| IFSC | Indian Financial System Code (bank branch code) |
| IMPS | Immediate Payment Service (India instant pay) |
| IoT | Internet of Things (network of connected devices) |
| ISO | Independent Sales Organization (payments) |
| ISO 20022 | ISO 20022 (International payment messaging standard) |
| ISV | Independent Software Vendor |
| KBA | Knowledge-Based Authentication |
| KYB | Know Your Business (business customer due diligence) |
| KYC | Know Your Customer |
| KYT | Know Your Transaction |
| LIBOR | London Interbank Offered Rate (benchmark interest rate) |
| LTV | Lifetime Value (of a customer) |
| MCC | Merchant Category Code |
| MFA | Multi-Factor Authentication |
| MICR | Magnetic Ink Character Recognition (printed check tech) |
| MID | Merchant Identification Number |
| ML | Machine Learning |
| MLRO | Money Laundering Reporting Officer |
| MoM | Month-over-Month (comparison) |
| MOTO | Mail Order / Telephone Order (card transaction) |
| MPL | Merchant Processing Line (payment processor term) |
| MQL | Marketing Qualified Lead |
| MRR | Monthly Recurring Revenue |
| MSB | Money Services Business |
| MTLS (mTLS) | Mutual TLS (mutual authentication TLS) |
| MTD | Month-To-Date |
| NACHA | National Automated Clearing House Association |
| NEFT | National Electronic Funds Transfer (India) |
| NFC | Near Field Communication |
| NFT | Non-Fungible Token |
| NSF | Non-Sufficient Funds (insufficient funds fee) |
| OCC | Office of the Comptroller of the Currency (US) |
| OCR | Optical Character Recognition |
| ODFI | Originating Depository Financial Institution |
| OFAC | Office of Foreign Assets Control (US sanctions) |
| OPEX | Operating Expense |
| OTP | One-Time Password |
| P2P | Person-to-Person (peer-to-peer payments) |
| P2M | Person-to-Merchant (consumer-to-business digital payment) |
| PAN | Primary Account Number (card number) |
| PCI DSS | Payment Card Industry Data Security Standard |
| PFaaS | PayFac as a Service |
| PII | Personally Identifiable Information |
| PIN | Personal Identification Number (card PIN) |
| PoS (crypto) | Proof of Stake (consensus mechanism) |
| POS (payments) | Point of Sale |
| PoW | Proof of Work (consensus mechanism) |
| PPP | Paycheck Protection Program (US loan program) |
| PR | Public Relations |
| PSD2 | Payment Services Directive 2 (EU) |
| PSP | Payment Service Provider |
| QA | Quality Assurance |
| QoQ | Quarter-over-Quarter (comparison) |
| RFP | Request for Proposal |
| RDFI | Receiving Depository Financial Institution |
| ROI | Return on Investment |
| RTGS | Real-Time Gross Settlement |
| RTP | Real-Time Payments (TCH real-time payment network) |
| SAR | Suspicious Activity Report |
| SCA | Strong Customer Authentication |
| SDK | Software Development Kit |
| SEC | Securities and Exchange Commission (US) |
| SEPA | Single Euro Payments Area |
| SLA | Service Level Agreement |
| SME | Small and Medium-Sized Enterprise |
| SOC | System and Organization Controls (audit reports) |
| SSN | Social Security Number (US) |
| SSO | Single Sign-On |
| STO | Security Token Offering |
| STP | Straight-Through Processing |
| SWIFT | Society for Worldwide Interbank Financial Telecom |
| TCO | Total Cost of Ownership |
| TID | Terminal ID |
| TIN | Taxpayer Identification Number |
| TPV | Total Payment Volume (Total Processing Volume) |
| TPS | Transactions Per Second |
| UAT | User Acceptance Testing |
| UPI | Unified Payments Interface (India) |
| UI | User Interface |
| UX | User Experience |
| VAR | Value-Added Reseller |
| VCI (VC) | Venture Capital (investment in startups) |
| VPA | Virtual Payment Address |
| W2 | Wage & Tax Statement (U.S. employee tax form) |
| XBRL | eXtensible Business Reporting Language |
| YTD | Year-To-Date |