षोडशभागो मानव्याजी विंशतिभागस्तुलामानं गण्यपण्यानामेकादशभागः ॥ कZ_०२.१६.१० ॥
ṣoḍaśabhāgo mānavyājī viṃśatibhāgas tulāmānaṃ gaṇyapaṇyānām ekādaśabhāgaḥ
The duty on goods measured by volume is one-sixteenth; on goods measured by weight (balance/scale) one-twentieth; and on countable goods one-eleventh.
Kauṭilya aligns taxation with administrative measurability and risk of evasion: different bases (volume/weight/count) have different verification costs and manipulation opportunities, so rates are differentiated.