You pay standard demat charges for early exit, with no STT on G-sec investments:
- If you exit G-secs before maturity on Kite, you pay the same charges as exiting any other security held in your demat account. To know the charges, see the List of all fees, charges, and taxes on trading and investing - Zerodha.
- Securities Transaction Tax (STT) is not applicable when you invest in SGB, G-Sec, T-Bill and SGrB.