Section-3 : Definition of tax year

1. Section-3 as per act

1. For the purposes of this Act, “tax year” means the twelve months period of the financial year commencing on the 1st April.
2. In the case of a business or profession newly set up, or a source of income newly coming into existence in any financial year, the tax year shall be the period beginning with—
   
   
   1. the date of setting up of such business or profession; or
   2. the date on which such source of income newly comes into existence, and, ending with the said financial year.

2. Help and useful links for Section-3

1. Income Tax Help Center
2. Income Tax Act 2025 Home