The duties of the Provincial Islamic Committee are as follows:

1. Advisory duties

1. To advise the provincial governor on matters related to Islamic affairs in the area.
2. To coordinate and advise the Central Islamic Council of Thailand on related matters.

2. Internal administrative duties

1. To oversee and inspect financial documents and asset accounts of mosques.
2. To consider and resolve to remove members of the mosque's Islamic committee from their positions if they are found to have misconducted themselves, neglected their duties, or acted against Islamic principles.
3. To appoint a provincial Islamic committee to prepare the registry of congregation members for a mosque that lacks a committee or whose registry has been lost.
4. To consider and rule on objections in cases where a congregation member has been removed from the registry.

3. Certification and promotional duties

1. To act as the body responsible for inspecting, certifying, and issuing "Halal" certificates for products or services of entrepreneurs in the province.
2. To promote education and organize activities that do not violate Islamic religious principles.
3. To look after the welfare of orphans and underprivileged individuals.

4. Religious duties

1. To report the results of moon sighting to the Central Islamic Council of Thailand to determine important religious dates, such as the beginning of Ramadan (the fasting month) and Eid.