imputation of paymentglossary / IMPUTATION OF PAYMENT imputation of payment. Civil law. The act of applying or directing payment to principal or interest. La. Civ. Code arts. 1864, 1866. 词条贡献者 法律翻译徐玲,知名法学院保险法专业,专注翻译各类与保险追偿有关的法律文件。