Calculators
F&O Margin Calculator
Multi-leg basket — combined Span, exposure, spread benefit & premium (illustrative model)
NSE/BSE symbol list and lot size load from your published Google Sheet (same source as the brokerage calculators). NRML vs MIS only scales the illustrative total below.
Add contract to basket
| Exch. | Contract | Product | Strike | Qty | Initial (Span) | Exposure | Total |
|---|
Combined margin requirements
Span
0
Exposure margin
0
Spread benefit
0
Premium payable ?
0
Premium receivable ?
0
Total margin
0
NRML — overnight margin (illustrative)
Note: Buying options requires premium (shown as payable); short options & futures use simplified Span + exposure on notional. Adding long options can reduce combined margin vs naked shorts via spread benefit in this model. Figures are not official exchange SPAN — compare with your broker’s calculator (e.g. Zerodha SPAN).
Model: short options & futures — Span 15% + exposure 5% on (underlying × lot size × lots); long options — premium × qty; spread benefit = paired opposite same-type strikes; MIS applies 45% to post-benefit total.