We can also use this information to measure the proportion of tax returns that are believed to be low risk or correct by identifying those that are not flagged by one of our risk profiles.
Gallwn hefyd ddefnyddio’r wybodaeth hon i fesur cyfran y ffurflenni treth rydym yn credu sy’n risg isel neu’n gywir drwy nodi’r rheini sydd ddim wedi cael eu hamlygu gan un o’n proffiliau risg.