April 1: Start of the new financial year for tax purposes.
July 31: Deadline for filing individual income tax returns.
September 30: Due date for filing tax audit reports for businesses.
November 30: Last date for filing revised or belated tax returns.
December 15: Deadline for paying the third installment of advance tax.
March 15: Deadline for the final installment of advance tax payment.
June 15: Due date for the first installment of advance tax.