O dan adran 23 o'r Ddeddf, mae'n ofynnol i Weinidogion Cymru ac Ysgrifennydd Gwladol Cymru adrodd bob blwyddyn ar y cynnydd a wnaed o ran cyflawni a gweithredu'r darpariaethau o dan Ran 2 o'r Ddeddf, hyd at flwyddyn ar ôl i'r darpariaethau terfynol gael eu rhoi ar waith. Ysgrifennwyd yr adroddiad hwn i nodi blwyddyn ers diwedd y flwyddyn ariannol pan gyflwynwyd yr olaf o'r darpariaethau, ac felly dyma'r adroddiad terfynol sy'n ofynnol o dan y Ddeddf.
Under section 23 of the Act, Welsh Ministers and the Secretary of State for Wales are required to report every year about the implementation and operation of the provisions under Part 2 of the Act until the first anniversary after the final provisions have been implemented. This report has been written to mark one year since the end of the financial year during which the last of the provisions was introduced, and is therefore the final report required under the Act.