Country Representative Members (CRMs): Membership fees are calculated on an individual basis, using the society's score on the United Nations Scale of Assessment which covers every recognised country. There is a lower limit of 840 euros and a maximum fee of 13,440 euros.
International Members at Large (IMALs): The fee for an International Member at Large is the CRM fee level that applies to the country of the headquarters of the IMAL or its legal seat if no headquarters exists.
National Members at Large (NMALs): The fee for a National Member at Large is a proportion of the fee for the CRM of that country and depends on the number of NMALs there are for the country at the beginning of the year in accordance with the following table
|Number of NMALs||Proportion of the CRM rate payable by each NMAL|
|3 or more||0.2|
There is a 10% discount on all membership fees for payment by March 31st each year.
As part of our celebrations for our 60th anniversary in 2020, we are offering a three-year membership for 2018-2020 at three times the 2018 rate less 15% if paid by March 31st 2018.