GT::Brokers - A module for calculating broker's fee & commissions
Brokers rules are used to calculate commissions for each buy/sell order, as well as annual account charge.
$broker->calculate_order_commission($order)
Return the amount of money ask by the broker for the given order.
$broker->calculate_annual_account_charge($portfolio, $year)
Return the amount of money ask by the broker for the given year according to the given portfolio.