| Albania | ALL | Source-reviewed model | Albania General Directorate of Taxes |
| Antigua and Barbuda | XCD | Source-reviewed model | Antigua and Barbuda Inland Revenue Department |
| Argentina | ARS | Source-reviewed model | Argentina Revenue and Customs Control Agency |
| Armenia | AMD | Source-reviewed model | Armenia National Services Gateway |
| Australia | AUD | Source-reviewed model | Australian Taxation Office |
| Austria | EUR | Source-reviewed model | Austria Ministry of Finance |
| Azerbaijan | AZN | Source-reviewed model | PwC Worldwide Tax Summaries - Azerbaijan |
| Bahamas | BSD | Source-reviewed model | PwC Worldwide Tax Summaries - The Bahamas |
| Bahrain | BHD | Source-reviewed model | PwC Worldwide Tax Summaries - Bahrain |
| Bangladesh | BDT | Source-reviewed model | Bangladesh National Board of Revenue |
| Barbados | BBD | Source-reviewed model | Barbados Revenue Authority |
| Belgium | EUR | Source-reviewed model | PwC Worldwide Tax Summaries - Belgium |
| Bermuda | BMD | Source-reviewed model | PwC Worldwide Tax Summaries - Bermuda |
| Bolivia | BOB | Source-reviewed model | Bolivia National Tax Service and Official Gazette |
| Bosnia and Herzegovina | BAM | Source-reviewed model | PwC Worldwide Tax Summaries - Bosnia and Herzegovina |
| Botswana | BWP | Source-reviewed model | PwC Worldwide Tax Summaries - Botswana |
| Brazil | BRL | Source-reviewed model | Brazil Federal Revenue |
| Bulgaria | EUR | Source-reviewed model | Bulgaria National Revenue Agency |
| Cambodia | KHR | Source-reviewed model | Cambodia National Social Security Fund |
| Canada | CAD | Source-reviewed model | Canada Revenue Agency |
| Cayman Islands | KYD | Source-reviewed model | Cayman Islands Department of Labour and Pensions |
| Chile | CLP | Source-reviewed model | Chile Internal Revenue Service |
| China | CNY | Source-reviewed model | State Taxation Administration of China |
| Colombia | COP | Source-reviewed model | Colombia National Tax and Customs Directorate |
| Costa Rica | CRC | Source-reviewed model | Costa Rica Ministry of Finance |
| Cote d'Ivoire | XOF | Source-reviewed model | Cote d'Ivoire Directorate General of Taxes |
| Croatia | EUR | Source-reviewed model | PwC Worldwide Tax Summaries - Croatia |
| Cyprus | EUR | Source-reviewed model | PwC Worldwide Tax Summaries - Cyprus |
| Czech Republic | CZK | Source-reviewed model | PwC Worldwide Tax Summaries - Czech Republic |
| Denmark | DKK | Source-reviewed model | Denmark Tax Agency |
| Dominica | XCD | Source-reviewed model | Dominica Inland Revenue Division |
| Dominican Republic | DOP | Source-reviewed model | PwC Worldwide Tax Summaries - Dominican Republic |
| Ecuador | USD | Source-reviewed model | PwC Worldwide Tax Summaries - Ecuador |
| Egypt | EGP | Source-reviewed model | Egyptian Tax Authority |
| El Salvador | USD | Source-reviewed model | El Salvador Ministry of Finance |
| Estonia | EUR | Source-reviewed model | PwC Worldwide Tax Summaries - Estonia |
| Ethiopia | ETB | Source-reviewed model | PwC Worldwide Tax Summaries - Ethiopia |
| Finland | EUR | Source-reviewed model | Finnish Tax Administration |
| France | EUR | Source-reviewed model | France Tax Administration |
| Georgia | GEL | Source-reviewed model | PwC Worldwide Tax Summaries - Georgia |
| Germany | EUR | Source-reviewed model | Germany Federal Ministry of Finance |
| Ghana | GHS | Source-reviewed model | Ghana Revenue Authority |
| Greece | EUR | Source-reviewed model | PwC Worldwide Tax Summaries - Greece |
| Guatemala | GTQ | Source-reviewed model | PwC Worldwide Tax Summaries - Guatemala |
| Hong Kong | HKD | Source-reviewed model | PwC Worldwide Tax Summaries - Hong Kong SAR |
| Hungary | HUF | Source-reviewed model | PwC Worldwide Tax Summaries - Hungary |
| Iceland | ISK | Source-reviewed model | Iceland Revenue and Customs |
| India | INR | Source-reviewed model | India Income Tax Department |
| Indonesia | IDR | Source-reviewed model | Directorate General of Taxes Indonesia |
| Ireland | EUR | Source-reviewed model | Irish Revenue |
| Israel | ILS | Source-reviewed model | Israel Tax Authority |
| Italy | EUR | Source-reviewed model | Italian Revenue Agency |
| Japan | JPY | Source-reviewed model | Japan National Tax Agency |
| Jordan | JOD | Source-reviewed model | Jordan Income and Sales Tax Department |
| Kazakhstan | KZT | Source-reviewed model | Kazakhstan Government - 2026 calculation indexes |
| Kenya | KES | Source-reviewed model | PwC Worldwide Tax Summaries - Kenya |
| Kuwait | KWD | Source-reviewed model | PwC Worldwide Tax Summaries - Kuwait |
| Latvia | EUR | Source-reviewed model | PwC Worldwide Tax Summaries - Latvia |
| Lithuania | EUR | Source-reviewed model | Lithuanian State Tax Inspectorate |
| Luxembourg | EUR | Source-reviewed model | Luxembourg Direct Tax Administration |
| Malaysia | MYR | Source-reviewed model | Inland Revenue Board of Malaysia |
| Malta | EUR | Source-reviewed model | PwC Worldwide Tax Summaries - Malta |
| Mauritius | MUR | Source-reviewed model | PwC Worldwide Tax Summaries - Mauritius |
| Mexico | MXN | Source-reviewed model | Mexico Tax Administration Service |
| Moldova | MDL | Source-reviewed model | PwC Worldwide Tax Summaries - Moldova |
| Monaco | EUR | Source-reviewed model | Monaco Social Funds |
| Montenegro | EUR | Source-reviewed model | Montenegro Ministry of Finance - Mandatory Social Insurance Contributions Act |
| Morocco | MAD | Source-reviewed model | PwC Worldwide Tax Summaries - Morocco |
| Netherlands | EUR | Source-reviewed model | Netherlands Tax Administration |
| New Zealand | NZD | Source-reviewed model | New Zealand Inland Revenue |
| Nigeria | NGN | Source-reviewed model | Nigeria Tax Authority |
| North Macedonia | MKD | Source-reviewed model | North Macedonia Public Revenue Office |
| Norway | NOK | Source-reviewed model | Norwegian Tax Administration |
| Oman | OMR | Source-reviewed model | PwC Worldwide Tax Summaries - Oman |
| Pakistan | PKR | Source-reviewed model | Pakistan Federal Board of Revenue |
| Panama | PAB | Source-reviewed model | PwC Worldwide Tax Summaries - Panama |
| Paraguay | PYG | Source-reviewed model | PwC Worldwide Tax Summaries - Paraguay |
| Peru | PEN | Source-reviewed model | Peru Tax Administration |
| Philippines | PHP | Source-reviewed model | Philippines Bureau of Internal Revenue |
| Poland | PLN | Source-reviewed model | Poland Tax Portal |
| Portugal | EUR | Source-reviewed model | Portugal Tax Authority |
| Qatar | QAR | Source-reviewed model | PwC Worldwide Tax Summaries - Qatar |
| Romania | RON | Source-reviewed model | Romania ANAF |
| Rwanda | RWF | Source-reviewed model | Rwanda Revenue Authority |
| Saudi Arabia | SAR | Source-reviewed model | PwC Worldwide Tax Summaries - Saudi Arabia |
| Senegal | XOF | Source-reviewed model | Senegal Directorate General of Taxes and Domains |
| Serbia | RSD | Source-reviewed model | PwC Worldwide Tax Summaries - Serbia |
| Seychelles | SCR | Source-reviewed model | Seychelles Revenue Commission |
| Singapore | SGD | Source-reviewed model | Inland Revenue Authority of Singapore |
| Slovakia | EUR | Source-reviewed model | PwC Worldwide Tax Summaries - Slovak Republic |
| Slovenia | EUR | Source-reviewed model | PwC Worldwide Tax Summaries - Slovenia |
| South Africa | ZAR | Source-reviewed model | South African Revenue Service |
| South Korea | KRW | Source-reviewed model | Korea National Tax Service |
| Spain | EUR | Source-reviewed model | Spain Tax Agency |
| Sri Lanka | LKR | Source-reviewed model | Sri Lanka Inland Revenue Department |
| St. Lucia | XCD | Source-reviewed model | PwC Worldwide Tax Summaries - Saint Lucia |
| Sweden | SEK | Source-reviewed model | Swedish Tax Agency |
| Switzerland | CHF | Source-reviewed model | Swiss Federal Tax Administration |
| Taiwan | TWD | Source-reviewed model | Taiwan Ministry of Finance eTax Portal |
| Tanzania | TZS | Source-reviewed model | PwC Worldwide Tax Summaries - Tanzania |
| Thailand | THB | Source-reviewed model | Thailand Revenue Department |
| Tunisia | TND | Source-reviewed model | PwC Worldwide Tax Summaries - Tunisia |
| Turkey | TRY | Source-reviewed model | Turkey Revenue Administration |
| Uganda | UGX | Source-reviewed model | PwC Worldwide Tax Summaries - Uganda |
| United Arab Emirates | AED | Source-reviewed model | PwC Worldwide Tax Summaries - UAE |
| United Kingdom | GBP | Source-reviewed model | United Kingdom HMRC |
| United States | USD | Source-reviewed model | United States IRS |
| Uruguay | UYU | Source-reviewed model | Uruguay General Tax Directorate |
| Uzbekistan | UZS | Source-reviewed model | Uzbekistan Tax Committee |
| Vietnam | VND | Source-reviewed model | Government of Vietnam |
| Zambia | ZMW | Source-reviewed model | Zambia Revenue Authority |
| Zimbabwe | USD | Source-reviewed model | Zimbabwe Revenue Authority |