When a bill is introduced in the Parliament, Parliament can pass the bill and before the bill becomes an act, it has to be presented to the Indian President for his approval. It is up to the President of India to reject the bill, return the bill or withhold his/her assent to the bill. The choice of the President over the bill is called the veto power.

The veto power enjoyed by the executive in modern states can be classified into the following four types:

• Absolute veto, which is, withholding of assent to the bill passed by the legislature.
• Qualified veto, which can be overridden by the legislature with a higher majority.
• Suspensive veto, which can be overridden by the legislature with an ordinary majority.
• Pocket veto, which is, taking no action on the bill passed by the legislature. Of the above four, the President of India is vested with three– absolute veto, suspensive veto and pocket veto. There is no qualified veto in the case of Indian President; it is possessed by the American President.

Source: Laxmikanth