Deffered payment enables you to buy securities without cash coverage at the moment of placing the order.
Opting for Deffered payment gives you an increase in the net asset value, i.e. the coverage for purchase orders, depending on your choice of 30% or 50% of the value of securities in your portfolio.
Let's assume your assets consist of PLN 100 cash and a portfolio valued at PLN 1000. In case of 50% DP you are allowed to place a buy order with the value of PLN 600 (PLN 100 cash + 50% of PLN 1000).
In case you purchase securities, available cash will cover the order, but when your cash is fully used to cover the buy but insufficient to cover the order fully, then Deffered Payment ("DP") is activated.
In case you conclude a buy trade with DP, you are obliged to settle the trade on the value date at the latest. For shares it is usually T+3, (on German markets T+2).
You can settle the trade by selling securities - on the value date of the buy trade at the latest. In this case the DP service will be blocked until the value date of the sell trade and the default interest will be charged.
In case you don't settle the buy trade by 16.30 on the value date, KBCSP is entitled to sell your securities to settle the trade.
You can obtain the forms here. There are no other costs related to Deffered payment.