10 January 2017
For TCS i.e 27EQ return last date for Q3 of FY 2016-17 is 15-Jan-2017 and for Q4 FY 2016-17 15-May-2017. Due dates for TDS returns only set at the last date of the next month of the Quarter, say for Q1 31-Jul-2016, Q2 31-Oct-2016, Q3 31-Jan-2017 and for Q4 31-May-2017.
10 January 2017
According to my knowledge is same as given above information and for more information you can see given link https://blog.cleartax.in/revised-due-dates-form-26eq-tcs-changes/
11 January 2017
Dear Mithun, please see the link.http://blog.saginfotech.com/due-dates-of-e-filing-of-tds-or-tcs-return. Further, we received mails from NSDL about TCS return last date as above only. As per my view there is no change in this. So please once clarify and inform us if any changes made meanwhile in the due dates for TCS return.