Zakah is due on all the money invested

I live and work away from my home country. I am trying to save money to go back with my family to my country. I am paying Zakah now since I am working. When I go back to my country, I do not expect to make enough money to make a good living. Say, I saved $100,000 and I would like to invest it and live from its proceeds. Am I obligated to pay Zakah on the $100,000 or only on the proceeds?

Praise be to Allah, the Lord of the Worlds; and may His blessings and peace be upon our Prophet Muhammad and upon all his Family and Companions. Zakah is due on the capital and its profit if the capital is invested in a business. If one invests his capital in real property, factory or the like in this case Zakah is due only on the rent of the real estate and the profit of the factory if they reach Nisaab and one lunar year passes after owning them. However, if you live in a non-Muslim country, you have to make good efforts to keep your family and children from going astray. Try your best to migrate to a Muslim country as soon as possible. You should not live in a non-Muslim country except for the extent of the necessity that first pushed you to live there. Allah knows best.