Datganiad Ysgrifenedig: Adroddiad Blynyddol Cyllid a Thollau Ei Mawrhydi (CThEM) ar Gyfraddau Treth Incwm Cymru (CTIC) 2023
Written Statement: His Majesty’s Revenue & Customs (HMRC) Annual report on Welsh Rates of Income Tax (WRIT) 2023