Is Zakat obligatory on a sum of 60,0 Saudi Riyals from variable monthly savings?

The aforementioned amount has reached the prescribed legal threshold (nisab), so you are obliged to pay zakat on it when a full year (hawl) has passed since it first reached the nisab. Its amount is a quarter of a tenth (2.5%). Determine the date on which the amount first reached the nisab, and if a year has passed since then, pay the zakat. Your spending from it does not harm, unless it falls below the nisab due to spending, in which case the hawl is interrupted, and you start a new hawl when the money reaches the nisab again. If you delayed paying zakat, pay it now, as zakat is not forfeited by the passage of time. The nisab is equivalent to 85 grams of gold or 595 grams of silver.