If someone receives a sum of money from their parents as a gift, is that money subject to maaser?
If yes is there a certain time span in which the maaser needs to be given?
Married children who are not somech on my shulchan, if i give them money from maaser for their support, do they need to give maaser on that money?
Gifts of money are subject to the laws of maaser kesafim.
Somebody who is dependent on charity is not obligated to give maaser, but some authorities write that it remains recommended for him to do so. If he wishes to give maaser, he would have to give even from contributions that he receives.
For details and sources, please see here.