The government has also imposed a two per cent levy on the custom value of imports of legumes and pulses.
Traders that fail to pay the levy face an interest rate of 25 per cent on the outstanding amount for the first month of default.
Kenya has slapped a two per cent levy on cereal imports in what could see an increase in the prices of maize, rice and wheat.
In a notice by the Agriculture and Food Authority (AFA), the government has also imposed a two per cent levy on the custom value of imports of legumes and pulses, including beans, lentils, soybeans and peanuts, and a one per cent levy on imported roots and tubers, including potatoes, cassava, sweet potatoes and yams.