Obligatory functions: 

Obligatory functions are those that the state has to implement at any cost at all times. State cannot abstain from its obligatory functions. If obligatory functions are not performed, the life and property of people cannot be protected. Some of the obligatory functions of the state are maintenance of internal peace, protection of rights, protection of boundary, etc.

Discretionary functions: 

Discretionary functions of the state are those which have to be implemented as per the economic condition of the country. Some of the discretionary functions of the state.are to provide health care, education, transport facilities and to implement welfare schemes. The implementation of these functions will provide better living conditions to people.

In a welfare state, it is the duty of the state to undertake these progressive measures. It is not possible to fix a limit to the discretionaiy functions of the state. The growth of technology and the increase in human needs broaden the discretionary functions.