Other powers are available to the WRA for carrying out more detailed investigations on a person’s tax position, such as powers of enquiry, information notices, and inspection.
Mae pwerau eraill ar gael i ACC er mwyn cynnal ymchwiliadau fwy manwl i sefyllfa dreth unigolyn, er enghraifft, pwerau ymchwilio, hysbysiadau gwybodaeth ac archwiliadau.