NSDL (National Securities Depository Limited) and CDSL (Central Depository Services Limited) are India's two depositories, the institutions that hold investors' securities in electronic form, from shares and bonds to ETFs and mutual fund units. Whichever broker you use, your demat account ultimately sits with one of these two.
What does a depository actually do?
Think of a depository as a giant, regulated vault for securities. Except nothing physical sits inside it. Shares in India stopped moving around as paper certificates long ago; today they exist as electronic entries, and the depositories are the official record-keepers of who owns what.
A depository does three big jobs:
- Holds your shares, bonds, ETFs, government securities and mutual fund units as electronic balances in your demat account.
- Transfers them when you buy or sell, debiting the seller's account and crediting the buyer's during settlement.
- Records corporate benefits, when a company issues bonus shares or splits its stock, the depository updates every holder's balance.
Mutual funds are worth a special mention, because they can sit in either place. Units held in demat form are balances in your demat account like any other security; units held as a Statement of Account (SoA) sit with the fund's registrar instead, outside the depository. On Rupeezy, funds you buy are held in demat, so they appear alongside your shares. See why are my mutual funds on Rupeezy held in demat form.
You never deal with NSDL or CDSL directly for day-to-day trades. You go through a Depository Participant (DP) (typically your broker) which is the depository's access point for investors. And your demat account is only half the picture; the other half, the trading account, is explained in demat account vs trading account.
Why are there two of them?
Simply because two were licensed and both grew. NSDL was set up first, in 1996, promoted by institutions associated with the National Stock Exchange (NSE). CDSL followed in 1999, promoted by institutions associated with BSE. Today both serve investors across both exchanges, and both are regulated by the market regulator, the Securities and Exchange Board of India (SEBI).
Functionally they are interchangeable for a retail investor:
| NSDL | CDSL | |
|---|---|---|
| What it is | Depository | Depository |
| Demat account number looks like | Starts with "IN" followed by 14 digits | 16 digits, all numeric |
| Regulated by | SEBI | SEBI |
That account-number format is the easiest way to tell where your demat account lives. Vikram checks his account statement, sees a 16-digit numeric ID, and knows his account is with CDSL; his colleague's begins with "IN", so hers is with NSDL.
What role do they play when I trade?
Take a Delivery sale. When Vikram sells 100 shares of Deccan Ceramics, his DP instructs the depository to move those shares out of his demat account for pay-in to the clearing corporation. On the buyer's side, the buyer's depository credits the shares into their demat account at pay-out. If the buyer and seller are on different depositories (one on NSDL, one on CDSL) the two systems transfer between each other; you don't have to do anything special.
The depositories also send you an independent record: a consolidated account statement listing your holdings, plus SMS/email alerts when securities move out of your account. These alerts come from the depository itself, not your broker, which makes them a useful independent check.
Things to keep in mind
- You don't choose your depository separately. Your broker's DP arrangement decides whether your demat account is on NSDL or CDSL. Neither is "better" for a retail investor.
- Trades settle seamlessly across the two depositories; the buyer's and seller's depository never needs to match.
- Read the SMS/email alerts your depository sends when shares move. They're your independent record of debits from your account.
- Your shares sit with the depository, not with your broker. If you ever change brokers, your holdings can be transferred to a demat account with the new one.
Read next
What is a Depository Participant (DP)? — Your point of contact with that depository.