Paying Zakaat before its due date

Yes, it is permissible to pay zakaat before its due date, because the Prophet (peace and blessings of Allaah be upon him) accepted two years’ zakaat in advance from al-‘Abbaas ibn ‘Abd al-Muttalib. But we should remember here that the annual payment of zakaat is worked out according to the Hijri (Islamic) calendar, and not the Gregorian (western) calendar – the difference between them is well known.