Conditions for the obligatoriness of Zakat
A family has been living in Europe for more than thirty years. The family breadwinner passed away, leaving a sum of money which his wife and children use for their livelihood expenses and which is decreasing from one year to the next. The sum is almost consumed and there are no means for its investment. For how long should the family continue to pay zakat?
Zakat must continue to be paid until the sum becomes less than the nisab (minimum sum upon which zakat is due). Zakat is not obligatory if the sum owned is less than the nisab which is the equivalent of 85 grams of 21 carat gold.
Allah the Almighty knows best.