Contracts
Section 35 of the Indian Stamp Act makes an unstamped contract admissible in court only after the stamp duty shortfall and a penalty of up to ten times that shortfall are paid, meaning the cost of curing the defect can be far higher than stamping at execution.
Check your DPDP readiness — free More on the blogSection 35 states that any instrument chargeable with stamp duty cannot be admitted as evidence, acted upon, registered or authenticated unless it bears the proper stamp. The provision does not render the instrument void; the underlying contract remains legally valid. However, without the stamp, a court will refuse to consider the document until the duty and any applicable penalty are satisfied. The Supreme Court clarified in December 2023 that non‑stamping is a curable defect. The instrument is not void or unenforceable; it is simply inadmissible. This distinction matters because the parties can still enforce their rights once the stamp duty shortfall is paid along with the penalty, which may be as high as ten times the amount of duty that was omitted.
When an agreement is found unstamped, the court requires payment of the deficient stamp duty plus a penalty. The penalty may extend to ten times the shortfall, meaning that if the duty owed is modest, the total cost of curing the defect can quickly become substantial. This makes stamping at the time of execution a far cheaper and safer option for most businesses.
Many entrepreneurs assume that an unstamped agreement is void and therefore of no use. In reality the contract is valid but cannot be proved in court until the stamp duty and penalty are paid. Another frequent error is applying another state’s stamp rate, which can lead to under‑payment and higher penalties. Finally, attempting to cure the defect at the last minute often fails because the impounding and penalty process takes time. Keeping only a photocopy of the agreement does not help either. Section 35’s admissibility requirement applies to the original instrument. If the original remains unstamped, the court will reject the copy as well, forcing the parties to obtain a freshly stamped original, which adds further delay and expense. For arbitration agreements, the same rule applies. The Supreme Court’s decision confirmed that non‑stamping does not make an arbitration clause void; it merely renders the agreement inadmissible until the stamp duty shortfall and penalty are settled. This means arbitration proceedings can continue once the defect is cured, avoiding the need to draft a new agreement.
The agreement remains a valid contract, but Section 35 prevents a court from admitting it as evidence or acting on it until the stamp duty shortfall and any penalty are paid. Until then it is unenforceable in litigation.
The penalty can be up to ten times the amount of stamp duty that was omitted. This is in addition to the shortfall itself, making post‑execution curing potentially very costly.
Yes. The proviso to Section 35 allows the instrument to be admitted once the deficient duty and the applicable penalty are paid. However, stamping before execution is considerably cheaper and avoids delays.
Yes. Stamp duty is a state subject, so each state sets its own rates for different instruments. Applying another state’s rate can result in under‑payment and higher penalties under Section 35.
Founder & CEO at VidhiSar. I have watched four companies pay for the same mistake, and it was never the mistake anyone expected. VidhiSar is software, not a law firm: every answer names the section it relies on so you can check it, and anything turning on your specific facts is worth putting to a professional. More about who builds this