The last date to file income tax return (ITR) varies for different categories of taxpayers. For the financial year (FY) 2018-19, the government has extended the deadline by a month to August 31, 2019.
Hindu Undivided Families (HUF) and taxpayers whose accounts are not required to be audited, the last date of filing ITR is usually, July 31 (Unless extended by the government). For the financial year (FY) 2018-19, the government has extended the deadline by a month to August 31, 2019.