TPIN preauthorisation on Zerodha

Wed, 20 May 2026 00:00:00 +0000

TPIN preauthorisation is a one-time consent mechanism (similar to DDPI) that allows a Zerodha client to authorise the broker in advance for sells, eliminating the per-trade T-PIN entry. Historically this was an alternative to the per-trade T-PIN + OTP eDIS flow ; now largely superseded by DDPI and the CDSL block mechanism .

What preauthorisation provided

Pre-2024: Without preauthorisation, every sell of a CDSL-held share required the user to enter T-PIN + OTP. For active traders this was significant friction.

Preauthorisation on WebNotes

TPIN preauthorisation on Zerodha

What preauthorisation provided