Questione giuridica chiave
Whether the amounts paid to Z.________ SA were constructive benefits subject to withholding tax.
Decisione estratta
The lower court could treat two-thirds of the payments as constructive benefits because the transfers were not reflected in the Romanian company's accounts and the company could not explain their cause.
Motivazione estratta
The appellant's private expertise and alternative explanations did not make the finding arbitrary; it failed to prove that the disputed payments had a commercial basis.