Art. 15 Federal Act of October 13, 1965, on Withholding Tax (WTA)
Art. 15 LIA
Jointly liable with the taxpayer are: a. for the withholding tax owed by a legal entity, a commercial partnership without legal personality, or a collective investment scheme in liquidation: the individuals responsible for the liquidation, up to the amount of the liquidation proceeds; b. for the withholding tax owed by a legal entity or a collective investment scheme transferring its domicile abroad: the bodies of this entity or, in the case of a limited partnership for collective investments, the custodian bank, up to the net assets of the legal entity and the collective investment.
Persons designated in para. 1 are only liable for tax claims, interest, and costs that arise, are asserted by the authority, or fall due during their administration; their liability is extinguished if they prove that they have done everything that could reasonably be expected of them to ascertain and fulfill the tax claim.
The person jointly liable has, in the procedure, the same rights and duties as the taxpayer.