From 1 January 2008 Associate members earning over £17,000 a year will pay a flat rate of £172.
Moving to a flat fee was originally agreed by the membership in a postal ballot three years ago with the aim of introducing an equal rate for equal service.
A range of lower rates still apply to those earning less than £17,000 a year, student, unwaged, retired and overseas members.
Further details about 2008 rates
Updated: 29 November 2007