From TDA
What is a day trade minimum equity call?
If your account has less than $25,000 day trading equity and is identified as a pattern day trading account, a day trading minimum equity call will be issued. Pattern day trader accounts that fall below the $25,000 minimum equity requirement should not day trade because doing so will restrict the account to closing transactions only for 90 days, or until the day trading equity is brought up to $25,000. Please be sure that any deposit made to bring the equity above $25,000 is in the account one business day prior to resuming day trading.Funds deposited in an account to satisfy a day trading minimum equity call must remain in the account for two full business days following the day of deposit before they can be withdrawn.
