Govt extends last date for filing I.T. returns to 5th August The last date for filing income-tax returns has been extended to 5 August. Tax returns for 2015-16 (assessment year 2016-17) were originally to be filed by 31 July. But in view of the day-long strike at public sector banks, the deadline has been extended to 5 August. For assessees across India liable to file I-T returns by 31 July, the deadline is extended up to 5 August, “For assessees in Jammu & Kashmir, this date has been extended to 31 August,”