Zakat

Zakat is one of the five pillars of Islam. As such, it is compulsory on Muslims, provided they meet certain conditions and criteria. Any Muslim who possesses the required nisaab (the minimum amount of wealth that one must have before zakat is payable) for one whole year is bound to pay Zakat on that wealth.
Final Zakat Amount:
If the Final Zakat Amount is 0, then no Zakat is due.
This only happens when the "Total amount subject to Zakat" is calculated to be less than the current NISAB value.