What is the amount of zakat that must be paid on annual profit, and is the zakat of Ramadan the same as the annual capital zakat?

If a Muslim possesses wealth that reaches the nisab (the equivalent of 85 grams of gold or 595 grams of silver) and a hawl (a full lunar year) passes over it, then he is obligated to pay 2.5% as zakat. Zakat includes the principal amount and its profit, and it becomes obligatory if the wealth, along with its profit, reaches the nisab and a hawl passes over it. It is not permissible to delay zakat beyond its due time except for a minor benefit, and delaying it until Ramadan if it became due before then is not considered a benefit. Zakat al-Fitr is different from Zakat al-Mal and is to be given out at the end of Ramadan as a sa' of the staple food of the people.