Close positions in your account to free up funds to meet your regulation T call. For example, if you have a regulation T call of $10,000, you could sell marginable shares in your account in the amount of $20,000. Generally, the closure of a non-marginable security will release 100% of the market value you close towards your regulation T call.
Closure of covered short option positions won't release 100% of the market value towards your regulation T call.
How do I calculate that amount?
$10,000 (call amount)/.50 (reg T requirement) = $20,000 (share value)
Violations to avoid when closing positions to meet a regulation T call
Same day substitution
Keep in mind that opening positions after you've closed them to meet a regulation T call on same day trading could "re-open" the regulation T call you came into the day with. Merrill refers to this as a same day substitution.
Monday 9:30 a.m.: You begin the day with a reg T call of $10,000 issued on Monday with a due date of Wednesday
Wednesday 10 a.m.: You sell $20,000 of ABC, which is marginable
Wednesday 10:30 a.m.: You buy $11,000 of XYZ, which is marginable
For illustration purposes only
Once you bought $11,000 of XYZ, you re-opened the call issued on Monday, you reduced your net SMA for the day to $4,500. Other firms may handle this situation differently, but at Merrill this would be a same day substitution. Simply put, Merrill determines whether or not you've met a regulation T call based on your net trading activity by day's end.
To make sure you've met the call, compare your net charge or release at the close of the day to determine if you've met the call.
Liquidation violation
Avoid closing positions to meet a regulation T call and margin maintenance call at the same time, because that would result in a liquidation violation.