| ADB | Asian Development Bank |
| AEAT | Agencia Estatal de Administración Tributaria (Spain) |
| AEOI | Automatic Exchange of Information |
| AFIP | Administración Federal de Ingresos Públicos (Argentina) |
| AI | Artificial Intelligence |
| AIS | Annual Information Statement |
| APA | Advance Pricing Agreement |
| API | Application Programming Interface |
| AT | Autoridade Tributária e Aduaneira (Portugal) |
| ATO | Australian Taxation Office |
| ATR | Additional Tax Revenue |
| AUD | Australian Dollar |
| BAS | Business Activity Statement |
| BC | British Columbia |
| BEPS | Base Erosion and Profit Shifting |
| BMF | Bundesministerium für Finanzen (Austria) |
| BNRA | Bulgarian National Revenue Agency |
| BRL | Brazilian Reals |
| CAD | Canadian Dollar |
| CIAT | Inter-American Center of Tax Administrations |
| CIT | Corporate Income Tax |
| COP | Colombian Peso |
| COTS | Commercial-Off-The-Shelf |
| CRA | Canada Revenue Agency |
| CRS | Common Reporting Standard |
| CSP | Credential Service Provider |
| CTC | Child Tax Credit |
| DFA | Digital Financial Asset |
| DGFiP | Direction Générale des Finances Publiques (France) |
| DGT | Directorate General of Taxes (Indonesia) |
| DIAN | Dirección de Impuestos y Aduanas Nacionales (Colombia) |
| DSP | Digital Service Provider |
| ED | Department of Education (United States) |
| eIDAS | Electronic Identification Authentication and Trust Services |
| ETCB | Estonian Tax and Customs Board |
| EU | European Union |
| EUR | Euro |
| FATCA | Foreign Account Tax Compliance Act |
| FEDR | Fixed Expenses Deduction Ratio |
| FTA | Forum on Tax Administration |
| FTE | Full Time Equivalent |
| FY | Fiscal Year |
| GBP | Great Britain Pound |
| GDP | Gross Domestic Product |
| GRS | Georgia Revenue Service |
| GST/HST | Goods and Services Tax / Harmonized Sales Tax |
| HMRC | Her Majesty’s Revenue and Customs (United Kingdom) |
| HNWI | High Net Wealth Individual |
| ICAP | International Compliance Assurance Programme |
| ICT | Information and Communication Technology |
| IEC | Integrated E-Filing and Centralized Processing Centre |
| IGN | Institut national de l'information géographique et forestière (France) |
| IMF | International Monetary Fund |
| IOTA | Intra-European Organisation of Tax Administrations |
| IRA | Italian Revenue Agency |
| IRS | Internal Revenue Service (United States) |
| IRAS | Inland Revenue Authority of Singapore |
| IRBM | Inland Revenue Board of Malaysia |
| ISORA | International Survey on Revenue Administration |
| IT | Information Technology |
| ITA | Israel Tax Authority |
| ITTI | Inventory of Tax Technology Initiatives |
| KRA | Kenya Revenue Authority |
| LB&I | Large Business and International |
| LTO/P | Large Taxpayer Office/Programme |
| MAP | Mutual Agreement Procedure |
| MBR | Modernising Business Registers |
| MFA | Multi-factor Authentication |
| MNE | Multinational Enterprise |
| MTD | Making Tax Digital |
| MVP | Minimum Viable Products |
| NAFA | National Agency for Fiscal Administration (Romania) |
| NFS | No-Filing Service |
| NRC | Número de Referencia completo (Full Reference Number) |
| NTA | National Tax Agency (Japan) |
| NTA | Norwegian Tax Administration |
| NTA | Netherlands Tax Administration |
| NTCA | National Tax and Customs Administration (Hungary) |
| NZD | New Zealand Dollar |
| ODSS | Optimising Disputes through Self-Service |
| OECD | Organisation for Economic Co-operation and Development |
| PAYE | Pay-As-You-Earn |
| PCG | Passcode Grid |
| PIT | Personal Income Tax |
| RA-FIT | Revenue Administration Fiscal Information Tool |
| RFB | Receita Federal do Brasil |
| RPA | Robotic Process Automation |
| SA | Self Assessment |
| SADI | Secure Access Digital Identity |
| SEK | Swedish krona |
| SII | Servicio de Impuestos Internos (Chile) |
| SMS | Short Message Service |
| SSC | Social Security Contribution |
| SPID | Sistema Pubblico di Identità Digitale (Public Digital Identity System) |
| SSI | Self Sovereign Identity |
| STA | State Taxation Administration (People’s Republic of China) |
| STA | Swedish Tax Administration |
| STI | State Tax Inspectorate (Lithuania) |
| SUNAT | Superintendencia Nacional de Aduanas y de Administración Tributaria (Peru) |
| TAS | Tax Administration Series |
| UK | United Kingdom |
| US | United States |
| USD | United States Dollar |
| VAT | Value Added Tax |
| VICA | Virtual Intelligent Chat Assistant |
| WHT | Withholding Tax |
Tax Administration 2022
Comparative Information on OECD and other Advanced and Emerging Economies