内うち税ぜいうちぜいMeanings1noun, noun which may take the genitive case particle 'no'tax-inclusive; tax includedRefers to a price that already includes consumption tax. Often contrasted with 外税 (tax-exclusive pricing). Used as a noun or with の to modify a following noun.See also: 外税この値ね段だんは内うち税ぜいです。This price includes tax.