Nil tds return

No TDS return if there is no TDS deducted.
No penalty or late fee.
No requirement to file NIL return

Not talking of return, that is clear. But it is said that we need to file a declaration (Not return) after logging in the TRACES website. Checking if that is mandatory?

yes it is mandatory to file declaration of Nil TDS Rreturn. Login to the TRACES WEBSITE as deductor and file the declaration statement

What is the timeline for filing declarations? Can we file it now for the quarter Oct - Dec since Jan 31st deadline has already passed?

you have to make compliance for nil return at online Traces Portal. If you have not made than department will remind you

timeline had already elapsed. you will now be required to pay penalty under 234E @ 200 per day for the days of delay subject to the amount not exceeding the amount of TDS

No penalty for compliance under 234E

Is the date mentioned in the TAN allotment letter considered to be the TAN allotment date? Or do I need to see somewhere else (for the purpose of determining the date from when the compliance needs to be started)

you login and file declaration, no late fee / Penalty, after declaring you cannot file TDS return for that particular quarter
of want to file on future then amend declaration of NIL

It is not mandatory to file nil TDS return if you have not deduct TDS for any quarter.

However you have to file a declaration for non filing of TDS Return.

The Deptt. has introduced a new functionality in the TRACES site wherein the persons who are not required to submit a return of TDS due to non applicability in any particular quarter shall have to submit a Declaration for the same on TRACES. Procedure for filing of Nil TDS return/ declaration for non filing of TDS statement is given below:

1. Login through your registered id at www.tdscpc.gov.in (TRACES site)

2. Go to “Statement/Payments TAB after login > Declaration for Non filing of TDS statement