Con carácter general, ¿cuál es la base para calcular la retención?
Con carácter general, constituirá la base para el cálculo de la retención la contraprestación íntegra exigible o satisfecha.
Cuando no pudiera probarse la contraprestación íntegra exigible o satisfecha, la Administración tributaria podrá computar como tal una cantidad de la que, restada la retención procedente, arroje la efectivamente percibida.
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