You can find your rateable value by using the Valuation Office Agency​​​​​​​​​​​​​​ ​​ ​​​​​​​​Link opens in a new window ​ ​ website.
Gallwch ddod o hyd i’ch gwerth ardrethol drwy ddefnyddio gwefan Asiantaeth y Swyddfa Brisio.