I am saving currency in Islamic bank. The yearly profits do not exceed 1.5% which is less than Zakaat value. I have no experience to invest the money in other activity. What should I do in this case?

All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger. We ask Allaah to exalt his mention as well as that of his family and all his companions.

If the money saved in the bank reaches the minimum amount liable for Zakat by itself or with other money or tradable items added to it and a whole lunar year elapses then it becomes obligatory to pay Zakat on it and the owner of this money has to pay it out. If the questioner does not want all of his money to be consumed by Zakat and he has no experience in investing money, then he has to seek help from some one experienced in this field in order to invest his money in an Islamicly approved manner. 

Allaah knows best.