Available Capital for NSE-Equity Segment Front End Exposure (A):

If

L          =          Ledger Balance

M         =          Security Deposit

C         =          Collaterals after applying haircut @ Scrip Var Margin Rates

M ( Margin ) = Security Deposit + Account ( Cr) - Account ( Dr)

C = Collateral

 IIF( M> 0 , ((M*10)+C)*100% , (M+C) * 100%). 

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  M                   C                     Total

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  0                     100                  100

  100                 100                  1100

  10                   150                  250

 -100                 150                  50

M ( Margin ) = Security Deposit + Account ( Cr) - Account ( Dr)

C = Collateral  

  M > C   = ( M + C ) * 80 %  = Margin

 ( M <= C ) = ( M * 2 ) * 80% = Margin

Example :

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  M                   C                     Total

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  0                     100                  0

  100                 100                  200

  150                 100                  250

  100                 150                  200

 -100                 150                  0

  10                  100                  20

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( M ) * 90 %  = Margin