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NISM-Series-VI: Depository Operations · Special Services - Debt Instruments and Government Securities

SGL, CSGL and Holding G-Secs in Demat

Updated 11 October 2026 · Fact-checked

An SGL (Subsidiary General Ledger) account is held with the RBI and records government securities for eligible entities. A CSGL (Constituent SGL) account lets an SGL holder keep its clients' securities. Retail investors hold G-Secs in demat; the securities sit in an SGL holder's CSGL account with the RBI, and the depository records your holding.

Understand SGL, CSGL and Holding of G-Secs in Demat

Government securities (G-Secs) are issued by the Central and State Governments. The RBI conducts the issuance as their agent and debt manager. They are held in electronic form. The RBI's Public Debt Office (PDO) keeps the master record of who owns them.

A Subsidiary General Ledger (SGL) account is an account with the RBI that records a holder's G-Sec balance. Only eligible entities can open one, such as banks and primary dealers. It is not meant for ordinary retail investors.

A Constituent SGL (CSGL) account solves this. An SGL account holder, such as a bank or a primary dealer, opens CSGL accounts for its clients. The client's securities are recorded in the CSGL account, while the SGL holder's own books show each client's holding separately. The SGL holder holds those securities on behalf of its clients.

For retail investors, the route works through the depository. Your G-Secs are held in a CSGL account of an SGL holder (an eligible institution that can maintain one) with the RBI. The depository records your beneficial holding in your demat account with a depository participant (DP). The DP is the intermediary that links your demat account to the depository's records. You are the beneficial owner.

Think of it in three layers. The RBI keeps the top-level record. The SGL or CSGL holder keeps the second layer. Your demat account is the third layer, showing what you own. Exam questions test which layer an entity sits in and who is allowed to hold what.

Key formulas to remember

SGL account
SGL = account with RBI (Public Debt Office) for eligible entities
Holds the entity's own securities and can also hold clients' securities only through a CSGL arrangement. Not for retail investors directly.
CSGL account
CSGL = Constituent SGL account maintained by an SGL holder for its clients
Client holdings are recorded separately from the SGL holder's own holdings.
Retail holding chain
Retail investor demat account → DP → Depository (beneficial record) | underlying securities: CSGL account of an SGL holder with RBI
The investor is the beneficial owner. The securities are held in a CSGL account of an SGL holder with the RBI, and the depository records your holding.
Where the record sits
Master record: RBI PDO | Holding record: SGL/CSGL holder | Beneficial record: depository, shown in your demat account
Use this to decide which entity answers a given question.

How to solve SGL, CSGL and Holding of G-Secs in Demat questions

Use this method for any question on SGL, CSGL or G-Secs in demat. It helps you place each entity in the right layer.

  1. 1Read the question and identify who holds the security: the RBI, an SGL holder, a depository, a DP or an investor.
  2. 2Ask if the holder is an eligible entity such as a bank or primary dealer. If yes, an SGL account is possible. If the holder is a retail investor, think demat.
  3. 3If the question talks about holding clients' securities, think CSGL. A CSGL is always linked to an SGL holder.
  4. 4If the question asks how a retail investor holds a G-Sec, answer with a demat account through a DP, with the underlying securities held in a CSGL account of an SGL holder with the RBI.
  5. 5Check the wording on ownership. The investor is the beneficial owner. The SGL holder holds the securities for its clients, and the depository records the beneficial holding.
  6. 6Eliminate options that make retail investors open SGL accounts with the RBI directly, or that mix up SGL and CSGL.
  7. 7Pick the option that matches the layered structure.

Quickest way: Three-layer shortcut

When to use it: Use it when you have under a minute and the options look similar.

  1. SGL means RBI account for eligible entities.
  2. CSGL means client sub-account under an SGL holder.
  3. Demat means the retail investor's view, through a DP.
  4. Match the question's holder to one layer and reject options from the wrong layer.

Common mistakes in SGL, CSGL and Holding of G-Secs in Demat

  • Thinking retail investors can open an SGL account directly with the RBI

    The word account suggests anyone can open one.

    Fix: Remember SGL is for eligible entities. Retail investors use a demat account or a CSGL arrangement through an intermediary.

  • Treating SGL and CSGL as the same thing

    Both names look alike and both hold G-Secs.

    Fix: SGL is the account with the RBI. CSGL is the sub-account the SGL holder keeps for its clients.

  • Believing the DP holds G-Secs in its own name with the RBI

    Students confuse DP with depository.

    Fix: The DP is only an intermediary that links your demat account to the depository's records. The securities are held in a CSGL account of an SGL holder with the RBI, and the depository records your beneficial holding.

  • Saying the investor is not the owner because securities are in a CSGL

    The legal holder and the beneficial owner are mixed up.

    Fix: The investor is the beneficial owner. The CSGL records client holdings separately from the holder's own securities.

  • Assuming G-Secs in demat are physical certificates

    Older shares were held as paper certificates.

    Fix: G-Secs are held in electronic form in the books of the RBI, SGL holders or the depository.

Worked examples

Example 1

Which of the following best describes a Constituent SGL (CSGL) account?
A. An account opened by a retail investor directly with the RBI
B. An account maintained by an SGL holder to record securities of its clients
C. An account used only for corporate bonds
D. An account with a stock exchange for settling trades

Show the solution
  1. Identify the term: CSGL means Constituent SGL.
  2. A CSGL is linked to an SGL holder, which is an eligible entity with the RBI.
  3. Option A is wrong because retail investors do not open accounts directly with the RBI under this structure.
  4. Option C is wrong because SGL and CSGL relate to government securities.
  5. Option D is wrong because a stock exchange does not maintain CSGL accounts for this purpose.
  6. Option B matches the definition.

Answer: B

Example 2

A retail investor wants to hold a government security in electronic form. Which route is correct?
A. Open an SGL account with the RBI in the investor's own name
B. Hold it in a demat account with a DP, with the underlying securities held in a CSGL account of an SGL holder with the RBI
C. Ask the issuer for a physical certificate
D. Hold it only through a stock broker's own account

Show the solution
  1. Check who can hold SGL accounts: eligible entities, not retail investors.
  2. Rule out A.
  3. Rule out C because G-Secs are held electronically.
  4. Rule out D because the investor needs a beneficial ownership record, not a broker's proprietary holding.
  5. Option B follows the chain: investor demat account, DP and depository record, CSGL account of an SGL holder with the RBI.

Answer: B

Exam tips

  • Learn the three layers: RBI SGL, CSGL for clients, demat for retail investors.
  • Watch for options that give retail investors direct SGL accounts. These are usually wrong.
  • Remember the investor is the beneficial owner, even though the securities are held through the depository.
  • Expect definition-style questions on SGL versus CSGL. Read the question stem for who holds the account.
  • NISM Series VI uses negative marking of 25% of the marks assigned to a question, so avoid guessing between two similar options without a reason.

Practice questions from Special Services - Debt Instruments and Government Securities

SGL, CSGL and Holding of G-Secs in Demat: frequently asked questions

What is an SGL account?

An SGL account is a Subsidiary General Ledger account with the RBI's Public Debt Office. It records government securities held by eligible entities such as banks and primary dealers.

What is the difference between SGL and CSGL?

An SGL account is the account an eligible entity holds with the RBI. A CSGL account is a sub-account that an SGL holder keeps for its clients. The CSGL keeps client holdings separate from the holder's own securities.

How can a retail investor hold G-Secs in demat?

You hold them in a demat account opened with a depository participant. The G-Secs are held in electronic form in a CSGL account of an SGL holder with the RBI, and the depository records your holding, which your demat statement shows.

Is a retail investor the owner of G-Secs held in a CSGL?

Yes. The investor is the beneficial owner. The CSGL is only a record-keeping arrangement that separates client holdings from the SGL holder's own securities.