15/09/2015 (Reuters) - Malaysia, the world's second-largest palm grower after Indonesia, will keep its crude palm oil export tax for October at zero percent, extending duty-free exports that began in May, a government circular showed.

The Southeast Asian nation calculated a reference price of 1,982.09 ringgit ($459.35) per tonne for October. A price above 2,250 ringgit per tonne incurs a tax, which starts from 4.5 percent and can reach a maximum 8.5 percent. ($1 = 4.3150 ringgit)