law: The Income-Tax Act, 1961
  1[211. Instalments of advance tax and due dates.-
  2[(1) Advance tax on the current income calculated in the manner laid down in section 209 shall be payable by-
  (a) all the assessees, other than the assessee referred to in clause (b), who are liable to pay the same, in four instalments during each financial year and the due date of each instalment and theamount of such instalment shall be as specified in the Table below:
  Table
  Due date of instalment
  Amount payable
  (b) 3[an assessee who declares profits and gains in accordance with the provisions of sub-section (1) of section 44AD or sub-section (1) of section 44ADA, as the case may be], to the extent of the whole amount of such advance tax during each financial year on or before the 15th March:
  Provided that any amount paid by way of advance tax on or before the 31st day of March shall also be treated as advance tax paid during the financial year ending on that day for all the purposes of this Act.]
  (2) If the notice of demand issued under section 156 in pursuance of an order of the Assessing Officer under sub-section (3) or sub-section (4) of section 210 is served after any of the due dates specified in sub-section (1), the appropriate part or, as the case may be, the whole of the amount of the advance tax specified in such notice shall be payable on or before each of such of those dates as fall after the date of service of the notice of demand.]
  1. Subs. by Act 4 of 1988, s. 80, for section 211 (w.e.f. 1-4-1988).
  2. Subs. by Act 28 of 2016, s. 89, for sub-section (1) (w.e.f. 1-6-2016).
  3. Subs. by Act 7 of 2017, s. 74, for "an eligible assessee in respect of an eligible business referred to in section 44AD" (w.e.f. 1-4-2017).