Today's Nisab Value
Nisab refers to the current price/rate of 86 grams of gold. The Nisab value informs Muslim of whether they are eligible to fulfil Zakat or not. This is because Nisab is the minimum amount that one should have before they are required to fulfil Zakat.
Upon meeting the Nisab value, one should maintain this amount for 1 Hijri year (or 355 days) before their Zakat is due.