Mae'r cynllun corfforaethol, a gymeradwywyd gan y Gweinidog Cyllid a Llywodraeth Leol, yn nodi datganiad o ddiben, amcanion strategol a mesurau perfformiad. Mae hefyd yn ymdrin â dull dwy-ffordd ACC o reoli treth, sydd wedi’i chynllunio er mwyn helpu i gasglu’r dreth iawn ar yr adeg iawn.
The corporate plan, approved by the Minister for Finance and Local Government, sets out a purpose statement, strategic objectives and performance measures. It also covers the WRA’s two-way approach to managing tax, which is designed to help collect the right tax at the right time.