The time limit for stamping is different, depending on the type of the instruments. It varies from 2 to 30 days. Besides, for residential property transactions, you can request deferral of payment and the maximum period of deferral is 3 years after the date of the earliest agreement. Learn more about these in this article.
A penalty will be payable for late stamping. However, under some circumstances, the penalty may be remitted. You can write to request for remission of the penalty.
No instruments chargeable with stamp duty shall be received in evidence in any proceedings unless they are duly stamped. Get more information on unstamped documents and inadequate consideration here.