An Assessee is a person who is liable to pay tax or any other sum of money under the Act. It includes:

☛ Every person in respect of whom any proceeding under this Act has been taken for the assessment of his income or of the income of any other person in respect of whom he is assessable, or of the loss sustained by him or by such other person or of the amount of refund due to him or to such other person.

☛ Every person who is deemed to be an assessee under any provision of this Act.

☛ Every person who is deemed to be an assessee in default under any provision of this Act.