What is the zakat threshold for an amount of 2250 Euros upon which a year has passed, and how is zakat calculated: Is it based on the price of gold in Euros or in Egypt, and with which purity (21 or 24 carat), and at the current Euro exchange rate or at the rate at the time the year passed, and is it disbursed in Euros or in Egyptian Pounds?

The criterion for the zakat threshold of local currencies is their value in gold or silver. If the value of the currency reaches the equivalent of 85 grams of 24-karat gold or 595 grams of silver, and a full year (hawl) has passed, then one-quarter of one-tenth (2.5%) must be given as zakat. If you do not know the exact time of the hawl, try to ascertain it, and if it is not clear, then act according to the more cautious approach. Zakat must be paid for past years if it was not paid then, and it should be paid at the currency's value at the time zakat became due, upon the completion of the hawl, while accounting for increases and decreases in the amount present at the time of the hawl, unless the wealth falls below the threshold. The standard karat used to determine the threshold is 24-karat because it is pure gold.