Almost 173,500 financial institutions from around the world have signed up to report customer information to the US Internal Revenue Service (IRS) under the Foreign Account Tax Compliance Act (FATCA).
Around 2,230 registered with the FATCA portal in the past month, according to the IRS.
At least one financial institution has joined the list from every country in the world.
The Cayman Islands tops the list with 32,496 financial firms registered, with Britain next on 24,000. In third place is Luxembourg with 8,525.
The top three account for more than a third of all registrations.
Under FATCA, firms have to report financial data held on file about any accounts controlled by US customers.
If the customers are US resident, any account balances over $50,000 are required – for expats the threshold is $200,000.
The next FATCA list is due for publication by the IRS on September 15, 2015.
| Country | Financial Insitutions |
|---|---|
| AFGHANISTAN | 13 |
| ALAND ISLANDS | 1 |
| ALBANIA | 20 |
| ALGERIA | 6 |
| ANDORRA | 36 |
| ANGOLA | 29 |
| ANGUILLA | 176 |
| ANTIGUA AND BARBUDA | 40 |
| ARGENTINA | 579 |
| ARMENIA | 37 |
| ARUBA | 22 |
| AUSTRALIA | 3456 |
| AUSTRIA | 3028 |
| AZERBAIJAN | 70 |
| BAHAMAS | 1111 |
| BAHRAIN | 245 |
| BANGLADESH | 91 |
| BARBADOS | 192 |
| BELARUS | 72 |
| BELGIUM | 369 |
| BELIZE | 313 |
| BENIN | 15 |
| BERMUDA | 2435 |
| BHUTAN | 1 |
| BOLIVIA, PLURINATIONAL STATE OF | 42 |
| BONAIRE, SINT EUSTATIUS AND SABA | 13 |
| BOSNIA AND HERZEGOVINA | 65 |
| BOTSWANA | 34 |
| BOUVET ISLAND | 3 |
| BRAZIL | 5531 |
| BRITISH INDIAN OCEAN TERRITORY | 16 |
| BRUNEI DARUSSALAM | 28 |
| BULGARIA | 189 |
| BURKINA FASO | 10 |
| BURUNDI | 9 |
| CAMBODIA | 96 |
| CAMEROON | 18 |
| CANADA | 4508 |
| CAPE VERDE | 15 |
| CAYMAN ISLANDS | 32496 |
| CENTRAL AFRICAN REPUBLIC | 5 |
| CHAD | 5 |
| CHILE | 373 |
| CHINA | 1059 |
| COLOMBIA | 257 |
| COMOROS | 5 |
| CONGO | 9 |
| CONGO, DEMOCRATIC REPUBLIC OF THE | 18 |
| COOK ISLANDS | 147 |
| COSTA RICA | 153 |
| COTE D'IVOIRE | 36 |
| CROATIA | 88 |
| CURACAO | 324 |
| CYPRUS | 917 |
| CZECH REPUBLIC | 235 |
| DENMARK | 386 |
| DJIBOUTI | 7 |
| DOMINICA | 24 |
| DOMINICAN REPUBLIC | 125 |
| ECUADOR | 39 |
| EGYPT | 258 |
| EL SALVADOR | 73 |
| EQUATORIAL GUINEA | 6 |
| ESTONIA | 45 |
| ETHIOPIA | 18 |
| FALKLAND ISLANDS (MALVINAS) | 1 |
| FIJI | 6 |
| FINLAND | 745 |
| FRANCE | 4967 |
| FRENCH POLYNESIA | 4 |
| FRENCH SOUTHERN TERRITORIES | 1 |
| GABON | 11 |
| GAMBIA | 15 |
| GEORGIA | 31 |
| GERMANY | 4303 |
| GHANA | 55 |
| GIBRALTAR | 2101 |
| GREECE | 167 |
| GREENLAND | 3 |
| GRENADA | 32 |
| GUADELOUPE | 1 |
| GUAM | 5 |
| GUATEMALA | 86 |
| GUERNSEY | 5127 |
| GUINEA | 14 |
| GUINEA-BISSAU | 1 |
| GUYANA | 13 |
| HAITI | 22 |
| HOLY SEE (VATICAN CITY STATE) | 1 |
| HONDURAS | 52 |
| HONG KONG | 3100 |
| HUNGARY | 378 |
| ICELAND | 24 |
| INDIA | 727 |
| INDONESIA | 516 |
| IRAQ | 70 |
| IRELAND | 4245 |
| ISLE OF MAN | 1044 |
| ISRAEL | 775 |
| ITALY | 1379 |
| JAMAICA | 59 |
| JAPAN | 3776 |
| JERSEY | 4686 |
| JORDAN | 88 |
| KAZAKHSTAN | 103 |
| KENYA | 83 |
| KIRIBATI | 1 |
| KOREA, REPUBLIC OF | 1309 |
| KUWAIT | 215 |
| KYRGYZSTAN | 30 |
| LAO PEOPLE'S DEMOCRATIC REPUBLIC | 25 |
| LATVIA | 61 |
| LEBANON | 163 |
| LESOTHO | 5 |
| LIBERIA | 76 |
| LIBYA | 21 |
| LIECHTENSTEIN | 1111 |
| LITHUANIA | 96 |
| LUXEMBOURG | 8525 |
| MACAO | 77 |
| MACEDONIA, THE FORMER YUGOSLAV REPUBLIC OF | 26 |
| MADAGASCAR | 9 |
| MALAWI | 14 |
| MALAYSIA | 562 |
| MALDIVES | 7 |
| MALI | 12 |
| MALTA | 951 |
| MARSHALL ISLANDS | 123 |
| MARTINIQUE | 1 |
| MAURITANIA | 16 |
| MAURITIUS | 2663 |
| MEXICO | 609 |
| MICRONESIA, FEDERATED STATES OF | 1 |
| MOLDOVA, REPUBLIC OF | 30 |
| MONACO | 150 |
| MONGOLIA | 24 |
| MONTENEGRO | 15 |
| MONTSERRAT | 12 |
| MOROCCO | 149 |
| MOZAMBIQUE | 22 |
| MYANMAR | 29 |
| NAMIBIA | 47 |
| NEPAL | 37 |
| NETHERLANDS | 3541 |
| NEW CALEDONIA | 5 |
| NEW ZEALAND | 1381 |
| NICARAGUA | 23 |
| NIGER | 8 |
| NIGERIA | 106 |
| NORTHERN MARIANA ISLANDS | 1 |
| NORWAY | 543 |
| OMAN | 37 |
| OTHER | 936 |
| PAKISTAN | 160 |
| PALAU | 1 |
| PANAMA | 962 |
| PAPUA NEW GUINEA | 8 |
| PARAGUAY | 42 |
| PERU | 239 |
| PHILIPPINES | 233 |
| POLAND | 436 |
| PORTUGAL | 352 |
| PUERTO RICO | 4 |
| QATAR | 73 |
| REUNION | 1 |
| ROMANIA | 138 |
| RUSSIAN FEDERATION | 1241 |
| RWANDA | 18 |
| SAINT KITTS AND NEVIS | 226 |
| SAINT LUCIA | 98 |
| SAINT MARTIN (FRENCH PART) | 3 |
| SAINT PIERRE AND MIQUELON | 2 |
| SAINT VINCENT AND THE GRENADINES | 367 |
| SAMOA | 67 |
| SAN MARINO | 17 |
| SAO TOME AND PRINCIPE | 7 |
| SAUDI ARABIA | 262 |
| SENEGAL | 24 |
| SERBIA | 49 |
| SEYCHELLES | 213 |
| SIERRA LEONE | 10 |
| SINGAPORE | 2167 |
| SINT MAARTEN (DUTCH PART) | 19 |
| SLOVAKIA | 88 |
| SLOVENIA | 60 |
| SOLOMON ISLANDS | 4 |
| SOMALIA | 1 |
| SOUTH AFRICA | 807 |
| SOUTH SUDAN | 8 |
| SPAIN | 1205 |
| SRI LANKA | 71 |
| SUDAN | 9 |
| SURINAME | 11 |
| SWAZILAND | 16 |
| SWEDEN | 705 |
| SWITZERLAND | 4994 |
| SYRIAN ARAB REPUBLIC | 1 |
| TAIWAN | 882 |
| TAJIKISTAN | 33 |
| TANZANIA, UNITED REPUBLIC OF | 36 |
| THAILAND | 1658 |
| TIMOR-LESTE | 4 |
| TOGO | 12 |
| TONGA | 3 |
| TRINIDAD AND TOBAGO | 84 |
| TUNISIA | 90 |
| TURKEY | 264 |
| TURKMENISTAN | 12 |
| TURKS AND CAICOS ISLANDS | 70 |
| UGANDA | 32 |
| UKRAINE | 247 |
| UNITED ARAB EMIRATES | 441 |
| UNITED KINGDOM | 24007 |
| UNITED STATES | 911 |
| URUGUAY | 186 |
| UZBEKISTAN | 17 |
| VANUATU | 13 |
| VENEZUELA, BOLIVARIAN REPUBLIC OF | 85 |
| VIET NAM | 157 |
| VIRGIN ISLANDS (BRITISH) | 5918 |
| VIRGIN ISLANDS (U.S.) | 2 |
| WALLIS AND FUTUNA | 1 |
| WEST BANK AND GAZA | 36 |
| YEMEN | 20 |
| ZAMBIA | 24 |
| ZIMBABWE | 18 |
| Total: | 173346 |
