SAMCO;-
http://blog.samco.in/samco-margin-policies-and-limits/
Clearly mentioned,
Long options i.e. Option Purchased
100% premium paid required as margin for both NRML and MIS.
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SAS:-
According to their site there is no leverage for option buying.
https://sasonline.in/faq/intraday-leverage-will-get-trading/
Mentioned there,
What is the intraday leverage provided for trading?
Options (Only Selling).
Another link:-
https://sasonline.in/faq/what-are-the-margins/
100% premium amount for buying
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ZEROdha:-
https://zerodha.com/z-connect/tradezerodha/margin-requirements/zerodha-margin-policies
According to their site there is no leverage for option buying. See following quote:-
"When you buy options, either equity or currency there is no additional leverage we provide. So if you are buying calls or puts of any contract, the premium required to buy them has to be present in your trading account. You can trade options either with product type as NRML or MIS, but since there is no additional leverage provided if you use product type as MIS, it is advisable not to use MIS while buying options since all MIS positions would get squared off before the close of markets."
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Zerodha even blocks BO-CO for Bank Nifty Weekly Options frequently during volatile times. Zerodha also blocks many OTM strikes in Bank Nifty Options which is accessible from other brokers. Trading Bank Nifty Options with Zerodha is a big risk.
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WISDOM:-
According to their site there is no leverage for option buying (Leverage is onLY 1X means no leverage for option buying). Although they provide high leverage for Intraday Option Selling.
Their offers is probably best for intraday option selling currently.
https://wisdomcapital.in/brokerage-plan/
Use drop down (Plan comparison) from above page.
Intraday Exposure NO Leverage for option buying.
1X Buy &
6X Sell for pro(Rs 9 pr trade). 1X Buy &
UPTO 10X sell for ultimate(Rs 15/lot).
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FINVASIA:-
They provide no leverage for Option Buying you need 100% capital for option buying.
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If you find any solid and confirmed info about leverage in option buying from any broker share it here in future.
Happy Trading.