My TCS was deducted in AY 2011-12, 2012-13, 2013-14 and forgot to claim it that year can I claim that TCS in AY 2020-21? And what procedure is to be followed if i can claim that unclaimed TCS?
See your compliance section is there and notice or write a letter to your assessment officer giving the reason why not filing and before that makes sure you have no taxable income that time
No, You cannot claim TCS in present year. If You have not filed itr then you can file a delay condonation request u/s 119 with the CIT. though I think there is a time limit for that. If you have filed itr you can file application u/s154 before assessing officer.