If the tenancy document is not stamped by the specified period, the Collector of Stamp Revenue may stamp the document upon receipt of the stamp duty and penalty. The fines levied will depend on the length of the overdue period.
If the overdue is within 1 month, the penalty is 2 times the amount of stamp duty; if it is over 1 month but not later than 2 months, the amount of stamp duty is 4 times; and if it is more than 2 months, You will be fined 10 times the amount of stamp duty.