According to the Internal Regulations the basic annual membership fee for Member Organizations is based on the World Bank classification of economies and amounts to:
- 118 EURO for low-income economies,
- 236 EURO for lower middle-income economies,
- 354 EURO for upper middle-income economies and
- 472 EURO for high-income economies.
In addition, each Member Organization pays 118 EURO for every 10 researchers listed on the application form. Thus, the minimum fee for any Member Organization is 236 EURO.
The annual fee for Associate Members is 48 Euro for low-income and lower middle-income economies, and 96 Euro for upper middle-income and high-income economies.