Is zakat due on invested money or only on saved money?

Money invested in trade is subject to Zakat, and it is more deserving of Zakat than saved money, provided that it reaches the nisab (minimum threshold) along with its profit, or what is combined with it from cash or trade goods owned by the proprietor, and a full hawl (lunar year) passes after it reaches the nisab. The nisab for banknotes is approximately equivalent to eighty-five grams of gold, and the amount due is 2.5%.