commutation of taxesglossary / COMMUTATION OF TAXES commutation of taxes. A tax exemption resulting from a taxpayer’s paying either a lump sum or a specific sum in lieu of an ad valorem tax. [Cases: Taxation 200. C.J.S. Taxation § 273.] 词条贡献者 资深译员Lester,毕业于美国一流的高级翻译学院,专注翻译各种与复杂国际仲裁有关的法律文件。