Delivery Margin
Extra collateral NSE blocks on stock F&O positions in the final expiry week to guarantee physical settlement — a mandatory feature of India's stock derivatives since 2019.
Definition
Delivery margin is the additional collateral that NSE progressively blocks on physically settled stock futures and in-the-money stock option positions during the final four trading days before monthly expiry. Unlike index derivatives (Nifty, Bank Nifty, FinNifty, MidcpNifty, Sensex, Bankex) which settle in cash, single-stock futures and stock options in India have been mandatorily physically settled since October 2019 under SEBI directive. This means that if you hold a long stock futures position to expiry you are obligated to take delivery of the underlying shares and pay the full contract value; if you are short, you must deliver the shares from your demat account. Delivery margin is the exchange's mechanism to ensure both sides have the resources to honour that obligation.
Why it matters
Delivery margin is one of the more operationally disruptive margin types for retail traders who carry stock F&O positions into expiry week without intending to take or give delivery. As expiry approaches, the broker automatically blocks an escalating percentage of the contract's notional value — on top of the regular SPAN margin — from the free balance in the trading account. If the account does not have sufficient funds or approved collateral, the broker may square off the position compulsorily. For option sellers, even out-of-the-money stock options can become ITM unexpectedly near expiry, triggering delivery margin obligations that the trader had not anticipated. It is critical to track positions from at least E-4 and decide whether to roll, close, or prepare for delivery well before the automatic square-off window.
How it works
NSE applies a stepped delivery margin schedule starting four days before expiry. The notional value blocked rises each day — from a modest initial percentage to 100% of contract value by expiry day — so that buyers accumulate the full payment capacity and sellers have shares ready in their demat for T+1 settlement. The blocked margin is in addition to the standard SPAN margin, and it applies separately to futures positions and to options that are in the money (as determined at end of each day). ITM options that expire in the money are physically settled; OTM options expire worthless and have no delivery obligation.
Example
Suppose you hold one lot of hypothetical stock XYZ futures (lot size 500 shares, current price Rs 200, notional value Rs 1,00,000). On E-4 NSE blocks roughly Rs 10,000 as delivery margin on top of your SPAN margin. By E-2, the block might rise to Rs 45,000. If your free balance cannot absorb this progressive block, your broker may partially square you off on E-2 or E-3 to recover funds. If you intend to take delivery, you need the full Rs 1,00,000 plus applicable charges available by expiry.
Track expiry risk in real time
Use TradePulse's option chain to monitor moneyness changes in stock options as expiry nears and delivery margin builds.