Early pay in
Also written EPI
Delivering securities to the clearing corporation's early pay-in account ahead of the pay-in deadline, mainly to earn margin exemption; now usually done by blocking shares in the client's own demat account.
In plain language
When a client sells shares, the exchange's clearing corporation needs those shares by the pay-in deadline. Until then, the sale is a risk, and margin is charged on it.
Early pay-in removes that risk before the deadline. The shares are made available to the clearing corporation early - and because the delivery obligation is already covered, the seller can get margin exemption. Buy-back and tender offer transfers also go only through the early pay-in route.
Originally early pay-in meant physically moving shares into a separate early pay-in account. Since 1 August 2021 the usual method is the block mechanism: the shares stay in the client's account but are blocked in favour of the clearing corporation.
How it works
From Chapter 8 (section 8.3) and Chapter 9:
Three pay-in options exist in both NSDL and CDSL: early pay-in, normal pay-in and auto pay-in.
Early pay-in.
- Used to avail margin exemptions and other benefits, including buy-back and tender offer transfers.
- The clearing corporation maintains separate early pay-in accounts for each CM.
- For margin exemption, the CM/BO can give early pay-in instructions from one day prior to the trading day up to the pay-in day (or as exchanges specify).
- Executes only if adequate balance is available.
- For buy-back and tender offers, transfers from a BO account are permitted only to the CM's early pay-in account through early pay-in.
Block mechanism (SEBI circular of July 16, 2021; from 1 August 2021). The seller BO can deliver directly to the CC: shares are blocked in the client's demat account in favour of the clearing corporation. If the sale is not executed, they stay in the account and are unblocked at the end of T day, avoiding movement out and back.
Pledged shares being sold. Where a client sells shares pledged to the TM/CM (margin pledge, funded stock or CUSPA pledge), a single "pledge release for early pay-in" instruction releases the pledge and sets up the early pay-in block, subject to pay-in validation up to the client's delivery obligation - with no DIS, electronic instruction or DDPI/POA.
Invoked margin pledges are also blocked for early pay-in in the client's account (SEBI circular of June 3, 2025).
Not available: early pay-in does not apply to settlement of mutual fund units on exchange platforms.
A worked example
Illustrative figures; the rules are the workbook's.
Neha holds 500 shares in her CDSL account and sells all of them on Monday at Rs 900 - a sale worth 500 x Rs 900 = Rs 4,50,000.
Option 1 - early pay-in by block. On Monday she (or her broker via the online facility) blocks the 500 shares in favour of the clearing corporation. Her delivery obligation is covered at once, so margin exemption can be given. The shares stay in her account until pay-in.
Option 2 - she changed her mind and the order never executed. The block is released at end of Monday (T day); the shares never left her account.
Option 3 - normal pay-in. She gives a normal pay-in instruction any time from T day till pay-in time. Margin is charged until delivery.
Option 4 - shares were margin-pledged. 300 of the 500 shares were pledged to her broker for margin. The broker gives one "pledge release for early pay-in" instruction; the pledge on 300 shares is released and the early pay-in block is set up for them automatically, up to her delivery obligation.
Buy-back. If instead she tenders 500 shares in a company's buy-back, the transfer can go only through early pay-in.
Why NISM asks about it
Chapter 8 (Functions of DP - Trading and Settlement, 13% weightage) sets out early, normal and auto pay-in and the block mechanism; Chapter 9 (Pledge and Hypothecation, 10%) and the margin pledge annexure cover pledge release for early pay-in and invocation; Chapter 10 covers tender offers; Chapter 5 lists early pay-in among easiest functions. Questions test why early pay-in is used (margin exemption), the permitted window, the block mechanism's start date and end-of-T-day release, and exclusive use for buy-back and tender offers.
Common exam traps
- Purpose: margin exemption (and buy-back/tender offer transfers).
- Window: from one day before the trading day up to pay-in day.
- Block mechanism from 1 August 2021; unexecuted sale → unblocked at end of T day, not next day.
- Buy-back and tender offer transfers go only through early pay-in.
- Not applicable to mutual fund units settled on exchange platforms.
- Pledge release for early pay-in needs no DIS, electronic instruction or DDPI/POA.
- Early pay-in executes only with adequate balance, whereas a normal pay-in instruction can be entered even with no balance.
Where this is taught
Free preparation for NISM Series VIRelated terms
- Block mechanismBlocking of shares in a selling client's own demat account in favour of the clearing corporation, instead of moving them out, to give early pay-in benefit; mandatory for early pay-in since 14 November 2022.
- Margin pledgeThe only permitted way for a client to give securities as margin — a special pledge created in the depository system that leaves the shares in the client's own demat account instead of transferring them to the broker.
- Auto pay-inA facility letting authorised BSE and NSE clearing members skip manual pay-in instructions, with securities in their settlement account considered for pay-in by the Clearing Corporation automatically.
- Clearing member accountThe special demat account a broker or custodian opens to settle exchange trades, through which clients' sold shares go to the clearing corporation and bought shares arrive; also called the pool account.
- Normal pay-inA pay-in instruction, available to BSE clearing members and seller BOs, that can be given any time from the trade day up to the pay-in deadline even with no balance yet in the account, unlike early pay-in.
- Pledge release for early pay-inA single-instruction functionality that releases a client's margin-pledged or CUSPA-pledged securities and sets up early pay-in for them immediately, when the client sells shares already pledged as margin.
- easiestCDSL's internet facility (Electronic Access to Securities Information and Execution of Secured Transaction) through which BOs and CMs submit debits, credits, freezes, pledges and confiscations.
- Client Unpaid Securities Pledgee AccountA separate account a TM/CM opens, in whose favour an auto-pledge marked "unpaid" is created when pay-out securities go to a client who has not paid for them.
- Auto Delivery-outNSDL delivery-out instructions the Clearing Corporation generates automatically for authorised clearing members, based on net delivery obligations, so the member need not submit a manual DO form for pay-in.
- DvP agentThe agent an interoperable Clearing Corporation appoints to receive pay-out securities and transfer them onward to the settlement account of another interoperable Clearing Corporation, completing cross-CC settlement.
- Client Securities Margin Pledge AccountA dedicated demat account a Trading or Clearing Member opens to accept client securities as margin by way of pledge, the only route permitted since 1 August 2020, replacing title-transfer collateral arrangements.
- Pay-inThe leg of settlement in which clearing members hand over what they owe: funds into the clearing corporation through the clearing bank, and securities into its pool account through the depository.
- Clearing bankA bank empanelled by the clearing corporation, where every clearing member keeps a dedicated clearing account through which all funds pay-in, pay-out, margin and collateral movements are made.
- Demat Debit and Pledge InstructionA limited, optional authorisation letting the broker (or broker-DP) debit a client's demat account only for settlement delivery, margin pledges, exchange MF orders and open-offer tenders - in place of a PoA.