The present membership of the Bank consists of 57 countries. The basic condition for membership is that the prospective member country should be a member of the Organization of the Islamic Cooperation (OIC). The IsDB Board of Governors has the authority to set the terms and conditions on the subscription and payment to the capital of the Bank. The cumulative capital subscription from the Initial Capital to the 6th General Capital Increase and the existing shareholding position of the IsDB member countries are as follows:
| Name | Capital subscription | Percentage total capital | |
|---|---|---|---|
| Kingdom of Saudi Arabia | 13.2bn
$ Capital Subscription |
22.5%
Percentage Total Capital |
|
| State of Libya | 5.3bn
$ Capital Subscription |
9.03%
Percentage Total Capital |
|
| Republic of Indonesia | 4.7bn
$ Capital Subscription |
7.94%
Percentage Total Capital |
|
| Islamic Republic of Iran | 4.6bn
$ Capital Subscription |
7.9%
Percentage Total Capital |
|
| Federal Republic of Nigeria | 4.3bn
$ Capital Subscription |
7.33%
Percentage Total Capital |
|
| Arab Republic of Egypt | 4.0bn
$ Capital Subscription |
6.77%
Percentage Total Capital |
|
| State of Qatar | 4.0bn
$ Capital Subscription |
6.87%
Percentage Total Capital |
|
| State of Kuwait | 3.9bn
$ Capital Subscription |
6.62%
Percentage Total Capital |
|
| United Arab Emirates | 3.8bn
$ Capital Subscription |
6.48%
Percentage Total Capital |
|
| Republic of Türkiye | 3.6bn
$ Capital Subscription |
6.17%
Percentage Total Capital |
|
| Islamic Republic of Pakistan | 1.4bn
$ Capital Subscription |
2.43%
Percentage Total Capital |
|
| People's Democratic Republic of Algeria | 1.4bn
$ Capital Subscription |
2.43%
Percentage Total Capital |
|
| Malaysia | 868m
$ Capital Subscription |
1.48%
Percentage Total Capital |
|
| People's Republic of Bangladesh | 566m
$ Capital Subscription |
0.96%
Percentage Total Capital |
|
| Kingdom of Morocco | 285m
$ Capital Subscription |
0.49%
Percentage Total Capital |
|
| Republic of Yemen | 259m
$ Capital Subscription |
0.44%
Percentage Total Capital |
|
| Republic of Sudan | 258m
$ Capital Subscription |
0.44%
Percentage Total Capital |
|
| Hashemite Kingdom of Jordan | 244m
$ Capital Subscription |
0.42%
Percentage Total Capital |
|
| Republic of Senegal | 164m
$ Capital Subscription |
0.28%
Percentage Total Capital |
|
| Sultanate of Oman | 158m
$ Capital Subscription |
0.27%
Percentage Total Capital |
|
| Republic of Iraq | 150m
$ Capital Subscription |
0.26%
Percentage Total Capital |
|
| Republic of Cameroon | 142m
$ Capital Subscription |
0.24%
Percentage Total Capital |
|
| Brunei Darussalam | 128m
$ Capital Subscription |
0.22%
Percentage Total Capital |
|
| Republic of Niger | 100m
$ Capital Subscription |
0.17%
Percentage Total Capital |
|
| Burkina Faso | 100m
$ Capital Subscription |
0.17%
Percentage Total Capital |
|
| Republic of Uganda | 98m
$ Capital Subscription |
0.17%
Percentage Total Capital |
|
| Kingdom of Bahrain | 80m
$ Capital Subscription |
0.14%
Percentage Total Capital |
|
| Republic of Tunisia | 79m
$ Capital Subscription |
0.14%
Percentage Total Capital |
|
| Republic of Benin | 65m
$ Capital Subscription |
0.11%
Percentage Total Capital |
|
| Republic of Kazakhstan | 60m
$ Capital Subscription |
0.1%
Percentage Total Capital |
|
| Republic of Mali | 56m
$ Capital Subscription |
0.1%
Percentage Total Capital |
|
| Republic of Azerbaijan | 56m
$ Capital Subscription |
0.1%
Percentage Total Capital |
|
| Republic of Gabon | 55m
$ Capital Subscription |
0.09%
Percentage Total Capital |
|
| Republic of Guinea | 51m
$ Capital Subscription |
0.09%
Percentage Total Capital |
|
| Islamic Republic of Mauritania | 36m
$ Capital Subscription |
0.06%
Percentage Total Capital |
|
| Republic of Lebanon | 36m
$ Capital Subscription |
0.06%
Percentage Total Capital |
|
| Republic of the Gambia | 29m
$ Capital Subscription |
0.05%
Percentage Total Capital |
|
| Republic of Mozambique | 29m
$ Capital Subscription |
0.05%
Percentage Total Capital |
|
| Kyrgyz Republic | 29m
$ Capital Subscription |
0.05%
Percentage Total Capital |
|
| Republic of Maldives | 26m
$ Capital Subscription |
0.05%
Percentage Total Capital |
|
| Republic of Togo | 20m
$ Capital Subscription |
0.03%
Percentage Total Capital |
|
| Republic of Tajikistan | 20m
$ Capital Subscription |
0.03%
Percentage Total Capital |
|
| State of Palestine | 20m
$ Capital Subscription |
0.03%
Percentage Total Capital |
|
| Republic of Sierra Leone | 18m
$ Capital Subscription |
0.03%
Percentage Total Capital |
|
| Syrian Arab Republic | 18m
$ Capital Subscription |
0.03%
Percentage Total Capital |
|
| Republic of Uzbekistan | 15m
$ Capital Subscription |
0.03%
Percentage Total Capital |
|
| Republic of Côte d’Ivoire | 14m
$ Capital Subscription |
0.02%
Percentage Total Capital |
|
| Union of Comoros | 14m
$ Capital Subscription |
0.02%
Percentage Total Capital |
|
| Islamic Republic of Afghanistan | 11m
$ Capital Subscription |
0.02%
Percentage Total Capital |
|
| Republic of Chad | 11m
$ Capital Subscription |
0.02%
Percentage Total Capital |
|
| Republic of Albania | 9m
$ Capital Subscription |
0.02%
Percentage Total Capital |
|
| Republic of Suriname | 9m
$ Capital Subscription |
0.02%
Percentage Total Capital |
|
| Turkmenistan | 6m
$ Capital Subscription |
0.01%
Percentage Total Capital |
|
| Republic of Djibouti | 6m
$ Capital Subscription |
0.01%
Percentage Total Capital |
|
| Federal Republic of Somalia | 6m
$ Capital Subscription |
0.01%
Percentage Total Capital |
|
| Republic of Guinea Bissau | 6m
$ Capital Subscription |
0.01%
Percentage Total Capital |
|
| Cooperative Republic of Guyana | 3m
$ Capital Subscription |
0%
Percentage Total Capital |