Zakat is obligatory charity.
Nisab means the minimum amount of wealth, such that if a person owns less than that then Zakat is not obligatory on them.
The Nisab for
Gold is 85 grams1 (20 Dinar = 20 Mithqal)
عليك شىء - يعني في الذهب - حتى يكون لك عشرون دينارا فاذا كان لك عشرون
دينارا وحال عليها الحول ففيها نصف دينار
Nothing is incumbent on you, ...
Not only the salary that will be counted. Your property(Includes all the property you have Details Here) has to be reached the amount of a Nisaab and stay with you for 1 lunar year. As soon as this criteria is fulfilled pick a date and calculate all the property you have and give Zakat.
Remember, only the Nisaab amount need to be stay with you for one year. ...
I agree that you should ask the expert in calculating your zakat. However, I'll just add a bit of information around this matter.
The 600.000 that you lent out might be eligible for zakat. I've read a few opinion regarding this matter. One of them states that if the person who borrows the money can easily pay you back, you should pay zakat for it since it's ...