From 1 April 2018, LTT replaced Stamp Duty Land Tax (SDLT) on residential and non-residential property and land interests purchased in Wales.
Daeth y dreth trafodiadau tir, gan gynnwys rheolau ad-dalu ac eithrio’r cyfraddau preswyl uwch, i rym yng Nghymru ar 1 Ebrill 2018.