CIOT and ATT have the same charitable aims:

• To advance public education in and promote the study of the administration and practice of taxation and the principles of economic and political science in relation to taxation.
• To prevent crime; and
• To promote the sound administration of the law for the public benefit by promoting and enforcing standards of professional conduct.

Branches must ensure that their activities reflect these charitable aims by:

• welcoming everyone to their meetings, not just members and students of CIOT and ATT
• providing support to members and students
• promoting initiatives with tax charities such as the 'Bridge the Gap' campaign
• promoting good practice
• supporting Head Office functions such as member compliance and responding to technical consultations