HTS code 1903.00.20.00 covers "Tapioca and substitutes therefor prepared from starch, in the form of flakes, grains, pearls, siftings or in similar forms › Of arrowroot, cassava or sago" under the US Harmonized Tariff Schedule. This is the official duty rate charged by US Customs when this product is imported into the United States, sourced directly from the U.S. International Trade Commission and refreshed daily.