How should zakaah
    be paid on investment accounts that contain both donated money and private funds?
Question

                Islamic centers in the west often have investments (halal), mainly profits from joint partnerships and other non-share investments. Is zakah due on the profits of these investments and any other donations to the Islamic Center?  Jazak Allah.
Praise be to Allah.This question was answered for us by Shaykh ‘Abd-Allaah ibn
    Qa’ood as follows:
The shareholders must pay zakaah on their own behalf, but no zakaah is
    due on the profits stemming from donations.