What a depository is
A depository is the company that keeps the central ledger of who owns every share in India. There are exactly two: NSDL, started in 1996 as India’s first depository, and CDSL, started in 1999. Both are licensed and supervised by SEBI, and every broker in the country is a Depository Participant of one of them.
You do not open an account “with NSDL” or “with CDSL” directly. Your broker opens it on your behalf with whichever depository it is registered with. The choice is made for you, and it almost never matters.
What is the same
| Aspect | NSDL | CDSL |
|---|---|---|
| Regulator | SEBI | SEBI |
| Job | Central record of securities ownership | Central record of securities ownership |
| Your shares | Same legal protection | Same legal protection |
| Settlement speed | T+1 | T+1 |
| Account safety | Dematerialized, PIN and OTP protected | Dematerialized, PIN and OTP protected |
For an investor, the depositories are interchangeable in the same way two nationalized banks are: different companies, same rules, same protection.
What is actually different
| Aspect | NSDL | CDSL |
|---|---|---|
| Founded | 1996 | 1999 |
| Promoters | Banks and institutions (IDBI, NSE era) | BSE and banks |
| Market share (approx.) | Larger share of assets | Larger share of accounts |
| DP ID format | IN + 6 digits (e.g. IN300378) | 8 numeric digits (e.g. 12081800) |
| BO ID look | IN300378-12345678 | 12081800-12345678 |
Market share is a historical footnote, not a quality signal. NSDL came first, so older institutions started there. CDSL grew with retail brokers. Neither is safer, cheaper to you directly, or faster.
How to tell which one holds you
Look at your Demat account number. If it starts with IN, your depository is NSDL. If it is all digits, it is CDSL. You can also find the depository name on any holding statement, in your broker app under profile details, or by checking the CAS (Consolidated Account Statement) you receive from the depositories every month.
What people usually get wrong
NSDL is safer than CDSL (or the reverse)
Both are SEBI-regulated central records with the same protections. Safety does not differ.
You should pick a broker by its depository
The depository is invisible to your daily use. Pick a broker for fees, app and support.
You cannot move shares between depositories
Shares transfer freely between NSDL and CDSL accounts through a delivery instruction slip.