Zerodha clearing corporation flows
Overview
Every securities transaction executed through Zerodha’s Kite platform passes through a clearing corporation before settlement is completed. The clearing corporation sits between the buyer and seller in every trade, guaranteeing completion of the transaction irrespective of whether either counterparty defaults. For NSE trades, the clearing corporation is NSE Clearing Limited (NSCCL, formerly the National Securities Clearing Corporation Limited). For BSE trades, it is the Indian Clearing Corporation Limited (ICCL). Zerodha, as a broker, holds clearing membership (or uses a clearing member) to participate in these clearing and settlement flows.
Understanding the clearing corporation’s role helps Zerodha clients understand why margins are required, how their funds and securities are protected if Zerodha were to face financial difficulties, and why settlement timelines are what they are.
What a clearing corporation does
A clearing corporation interpositions itself as the central counterparty (CCP) in every matched trade. When buyer A and seller B complete a trade on NSE, the clearing corporation becomes the seller to A and the buyer from B. From this moment, A and B no longer have any direct obligation to each other: A settles with NSCCL, and B settles with NSCCL. If B defaults (fails to deliver shares), NSCCL fulfils A’s purchase using its guarantee mechanisms, without A suffering a loss.
This novation – the substitution of the clearing corporation as counterparty – is the core function of a clearing house and is why it is considered systemically important infrastructure. The failure of a clearing corporation would be a severe systemic event, analogous to the failure of a major payment system.
Zerodha’s clearing membership structure
Zerodha holds its own clearing membership with NSCCL (for NSE) and uses the ICCL clearing structure for BSE. As a clearing member, Zerodha is responsible for:
- Collecting margin from its clients and depositing a corresponding amount with the clearing corporation.
- Ensuring that the securities required for delivery on settlement day are available and transferred to the clearing corporation.
- Receiving the funds and securities settled by the clearing corporation and crediting them to client accounts.
Because Zerodha is directly a clearing member (rather than a trading member using a third-party clearing member), it has a direct settlement relationship with the clearing corporation, which gives it more control over the clearing process and settlement timing.
Margin flows
Client to Zerodha
When a Zerodha client takes an F&O position or purchases equity on a delivery basis, the required margin or purchase consideration is blocked in the client’s trading account. For F&O, this is margin (SPAN + exposure margin or SEBI-prescribed margin). For delivery equity, it is the full purchase consideration.
Zerodha aggregates the margin requirements across all its clients for each position category and maintains a corresponding margin balance with the clearing corporation.
Zerodha to clearing corporation
Zerodha deposits margin with the clearing corporation at the prescribed clearing corporation accounts – cash, government securities, or eligible collateral as specified by the clearing corporation’s margining framework. The clearing corporation marks Zerodha’s margin account to market daily, requiring additional top-up if the net position of Zerodha’s clients moves adversely.
The clearing corporation’s total margin pool from all clearing members constitutes its Settlement Guarantee Fund (SGF), which is the primary resource for handling defaults. NSCCL and ICCL maintain the SGF at levels prescribed by SEBI.
Mark-to-market for F&O
For futures positions, the clearing corporation calculates mark-to-market (MTM) profit and loss at end of each trading day. MTM losses are debited from the clearing member’s account and credited to the clearing member of the winning side. Zerodha debits MTM losses from the relevant client accounts and credits MTM gains, maintaining the clearing corporation settlement on a daily basis.
Settlement of equity trades
T+1 settlement cycle
Under the T+1 settlement cycle (applicable to all Indian equities since January 2023):
On trade day (T): Zerodha receives the order from the client through Kite, routes it to the exchange (NSE or BSE), and the trade is executed and matched.
By end of T: NSCCL or ICCL calculates the net settlement obligation for each clearing member, netting buy and sell transactions in the same security to arrive at a net delivery obligation (securities to be delivered or received) and a net funds obligation.
On T+1: Securities due for delivery are transferred from the delivering clearing member’s pool account to NSCCL, and then from NSCCL to the receiving clearing member’s pool account, and ultimately to the client’s demat account. Funds are transferred from the buying clearing member’s settlement account to the selling clearing member’s settlement account through the clearing bank.
Zerodha credits the sold shares proceeds to the client’s trading account and reflects delivered shares in the client’s demat account by end of T+1.
Auction settlement for short deliveries
If a seller fails to deliver shares by the settlement deadline (which can happen in cases of short selling or delivery failures), the clearing corporation conducts an auction. In an auction, the clearing corporation sources the required shares from other market participants and charges the defaulting clearing member the auction price (typically at a penalty over the market price). The resulting cost is passed on to the client responsible for the short delivery.
Settlement of F&O trades
F&O positions are not settled by physical delivery of securities (except for stock futures and options in expiry month, which may go to physical delivery under SEBI’s physical settlement mandate for stock derivatives).
Daily MTM settlement
Every day the F&O markets are open, the clearing corporation calculates MTM profits and losses and transfers them between clearing members. The clearing member settles these with its clients on the same day.
Final settlement at expiry
At the expiry of an options or futures contract:
- Index futures and index options: Final settlement is in cash, based on the closing value of the index on expiry day.
- Stock futures and options (for in-the-money options that are not closed): Final settlement is by physical delivery of the underlying shares. The buyer receives shares, and the seller must deliver shares. This physical settlement obligation requires that the relevant clients have shares available for delivery (for sellers) or funds available for purchase (for buyers).
Zerodha handles the physical settlement obligations by debiting or crediting client demat accounts and trading accounts as required, working within the clearing corporation’s settlement framework.
Client fund and securities protection
A question frequently asked by clients is what happens to their funds and securities if Zerodha fails. The clearing corporation framework provides the following protections:
- Client funds: SEBI’s client fund segregation rules require Zerodha to maintain client funds in a separate account (designated client bank account) distinct from Zerodha’s own funds. The clearing corporation’s claims on Zerodha relate to Zerodha’s net settlement obligations, not to client funds directly.
- Client securities: Under the margin pledge framework, pledged securities remain in the client’s demat account. Unpledged securities are always in the client’s demat account (not Zerodha’s). Only securities in transit for settlement (sold shares moving through the clearing process) are temporarily in the clearing pipeline.
- Demat account independence: The CDSL or NSDL demat account is owned by the client, not by Zerodha. A Zerodha insolvency does not affect the client’s demat holdings. The client can transfer their demat account to another broker.
Role of settlement banks
NSCCL and ICCL maintain accounts with designated settlement banks (large scheduled commercial banks). All funds movements in the settlement process pass through these settlement banks. Clearing members like Zerodha maintain accounts at the settlement banks, through which they pay and receive settlement funds. The Reserve Bank of India oversees the settlement bank framework as part of its mandate over systemically important payment infrastructure.
References
- SEBI Circular, “Clearing Corporation Settlement Guarantee Fund framework,” latest edition.
- NSCCL, “Settlement mechanics and clearing member obligations,” operational circular.
- ICCL, “Clearing and settlement guidelines for BSE members,” latest edition.
- Zerodha Z-Connect Blog, “How trade settlement works at Zerodha,” Zerodha.com.
- SEBI, “Master Circular on Clearing Corporations,” latest edition.
- NSE Circular, “Physical settlement of stock derivatives,” 2019.