Is it permissible to pay Zakat before its due date (Hawl), and how is it calculated at the end of the year if a portion of it has been paid in advance?

It is permissible to advance Zakat if the wealth reaches the nisab. If the hawl (one lunar year) for the wealth is in Dhul-Hijjah and the Zakat was advanced in Rajab, then the additional amount (140,000) has two scenarios:

- If it is a growth of the original wealth (like trade profit), its hawl is that of the original wealth, and Zakat is paid for it when the hawl is completed in Dhul-Hijjah.

- If it is newly acquired wealth (like a gift or inheritance), the Zakat payer has the choice either to pay its Zakat along with the first wealth or to set a separate hawl for it starting from the day of its possession.

- If the additional wealth comes successively (like savings from a salary), it is easier to pay its Zakat along with the first wealth in Dhul-Hijjah.