On 18 October last year, the Welsh Government officially established the WRA as the body responsible for managing and collecting Land Transaction Tax and Landfill Disposals Tax.
Dechreuodd ACC, a sefydlwyd gan Lywodraeth Cymru, gasglu a rheoli refeniw o ddwy dreth ddatganoledig yng Nghymru, y Dreth Trafodiadau Tir a'r Dreth Tirlenwi, ym mis Ebrill 2018.