Through the database of job announcements
http://www.euro-math-soc.eu/jobs
it helps young mathematicians to find a job.
Provides extensive information on scientific activities: conferences, workshops, schools, etc.
http://www.euro-math-soc.eu/events
Organizes and sponsors scientific activities: the ECMs, EMS Lectures, Summer Schools, etc.
http://www.euro-math-soc.eu/ems-scientific-activities
http://www.euro-math-soc.eu/ems-congresses-0
Awards prestigious prizes: the EMS Prizes, the Felix Klein Prize, the Otto Neugebauer Prize
http://www.euro-math-soc.eu/prizes.html
Publishes mathematical journals and books at fair prices, and its members benefit from discounts
http://www.ems-ph.org/
Is one of the partners of Zentralblatt MATH
https://zbmath.org/
Is the editor of The Encyclopedia of Mathematics wiki
http://www.encyclopediaofmath.org/index.php/Main_Page
Is a partner of EuDML, the European digital mathematics library
https://eudml.org/
Is one of the promoters of the network EU-MATHS-IN of Mathematics for Industry and Innovation
http://www.eu-maths-in.eu/
And it is lobbying for mathematics at the EU!
The concrete benefits for individual members are

· 20 % discount on books published by the European Mathematical Society;
· discount on subscriptions to journals published by the EMS Publishing House;
· access to the online Journal of the European Mathematical Society;
· EMS Newsletter, published 4 times a year for no extra charge;
· reduced registration fees for the European Congresses;
· reduced registration fee for some EMS co-sponsored meetings;
· free access to Zentralblatt MATH;
· reciprocity memberships available at the American, Australian, and Canadian Mathematical
Societies.