The annual membership fee is due on August 31st of each year. It can be paid via bank transfer to the account of the Society in the Bank of Piraeus IBAN: GR42 017 2039 0005 0390 3372 2178 SWIFT/BIC: PIRBGRAA or using a credit card [The steps involved are shown in this PDF] You may download the invoice as a PDF file, or as a MS Word file, to review the payment options in more detail. After a payment please inform the Treasurer of the Society (treasurer@helas.gr).