Is Zakaah better in Ramadan, even though it is one of the pillars of Islaam?

Sheikh ‘Uthaimeen (رحمه الله) replied: 

Zakaah, like other good deeds, is better when done at a time of virtue, but when zakaah becomes obligatory and the year has passed, it becomes obligatory for a person to pay it, and he should not delay it until Ramadan. If the year is completed in Rajab, then he should not delay it until Ramadan, rather he should pay it in Rajab. If the year is completed in Muharram then he should pay it in Muharram, and not delay it until Ramadan. But if the year is completed in Ramadan, then he should pay it in Ramadan.  

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Fataawa Islamiyyah, 2/164