Margin Requirement for Long Calendar Spreads
Applies only to margin accounts
The BP Effect for a long calendar spread is the net cost of the spread (debit paid for the long options - credit of the short options*). *Note, the short option(s) must expire before the long option(s).
To learn how to set up a calendar spread in the tastyworks platform, please click here.
Example of a Long Calendar Spread in a Margin Account
Buy to open 4 Jun 43 Calls at $3.00
Sell to open 4 Mar 43 Calls at $1.00
The BP Effect of this position is $800 [($3.00 - $1.00) x 4 contracts x options multiplier]