From 1 April 2018, LTT replaced Stamp Duty Land Tax (SDLT) on residential and non-residential property and land interests purchased in Wales.
O 1 Ebrill 2018, fe wnaeth y Dreth Trafodiadau Tir ddisodli Treth Tir y Dreth Stamp ar eiddo preswyl ac amhreswyl a buddiannau tir a brynwyd yng Nghymru.