"Dan arweiniad craff Kathryn, datblygodd ACC i fod y cyfrwng oedd yn caniatáu i Gymru godi trethi am y tro cyntaf mewn 800 mlynedd. Hyd yma, mae ACC wedi codi mwy na £1bn mewn refeniw treth i gefnogi gwasanaethau cyhoeddus ledled Cymru.
“Under Kathryn’s insightful leadership, the WRA became the vehicle which allowed Wales to raise taxes for the first time in 800 years. To date, the WRA has raised more than £1bn in tax revenue to support public services across Wales.