Online payment

Payments for the registration fees for CEST2023 are processed through the eCommerce service provided by Alpha Bank Greece. Through Alpha Bank eCommerce we are accepting Credit card payments and bank transfers. Payment confirmation is sent by e-mail to the emails address provided by the Customer soon after acceptance of the payment (by credit card) has been processed by the bank. A receipt or invoice will be issued after your payment and will be delivered to the e-mail address provided during the payment within a week.

Please keep in mind that online registration is mandatory in order for your payment to be confirmed and valid. An administrative fee of 15 euros is applied in case of payment through a bank transfer

In case you require an “on - Credit invoice” you should click on “Invoice” while filling out the billing information. CEST does not have access or withholds any credit card information given during the payment. The system used is a secure system handled entirely by Alpha Bank Greece. 

To complete the registration and payment you must take the following steps: 

  1. After logging in to your account at, you select “Fee payment” from the menu on the top of the page
  2. Select your registration option and the quantity of the tickets (one for each participant), you press the “Add to cart” button and you are redirected to the page where your cart is displayed 
  3. You can check the amount and click “Checkout” for completing the payment 
  4. In the page “Registration Information” you should fill the field with the paper(s) id and click on “Continue to next step” 
  5. In the “Checkout” tab you are required to fill the billing information. Click on “Invoice” if you wish an invoice to be issued for your payment or if you wish an on-credit invoice to be delivered (by email) 
  6. Select the method of payment (credit card or bank transfer) and click on “Continue to next step” 
  7. For payments with credit card, please follow the instructions on the screen provided by Alpha Bank, Greece. All credit cards are accepted. 
  8. In case you select bank transfer as a payment method, you are going to receive all the payment information in your email account. Please ensure that transfer fees are paid by you as the “sender”; do not select “shared” fees or fees paid by the “beneficiary” or “recipient” in order that COSMOS S.A. receives the full invoiced amount. Payments are accepted in Euros (EUR). Please indicate INVOICE /RECEIPT NUMBER & CEST2021 while proceeding with the bank transfer. 


Bank details are as follows: 


Wire Transfer in Euros (EUR) 

IBAN: GR6801401570157002320001283 

SWIFT Code / BIC (Wire Transfer Address): CRBAGRAA 

Beneficiary's Name: COSMOS SA. 

Beneficiary's Address: Aigaiou 10, Marousi 15122, Greece 

Bank Account Number (EUR, Euros Account for COSMOS SA): 157-00-2320-001283 

Bank Name: Alpha Bank Greece 

Bank Address: SPYROU LOYH (157) BRANCH, Ermou 27, Marousi 15124 


Information on VAT 

In EU, it is allowed to perform VAT-less transactions in many B2B and some B2C cases. 

Unfortunatelly, as a conference, we are not eligible to provide you with these kinds of exemptions as part of the other side of these regulations. 


Where is it written? 

According to the European Commission's Taxation rules, B2B services in respect of admission to cultural, artistic, sporting, scientific, educational, entertainment and similar events will be taxed at the place where those events actually take place [Article 53 of the VAT Directive]. 

If you search for "Example 35" in the above source, you will also read specifically: 

For a conference organised in Stockholm for participants paying a fee to attend, Swedish VAT is charged. 

For more specific information, you can refer directly to the VAT Directive of the European Commission (offered in multiple languages). The article in reference is Article 52. 

So, what can I do now? 

For EU companies: 

Even if we are applying VAT charges according to EU regulations, you are still able to recover the VAT from your own country. The process varies among countries of the EU and for more information, it is always better to ask your local Tax Administration or your accountant. They will certainly provide you with the latest details. However, some information can be found online as well. The main idea is that you will have to refer to your Tax Administration which will request the VAT refunded from the Greek state and then return it to you.

More information on the requirements, dates and contact points for the Greek Tax Administration can be found at and additional general information about VAT refund can be found at


For non-EU companies: 

For companies outside the EU, currently, the VAT refund is also possible. However, different countries have to sign an explicit reciprocity agreement with the EU country in question in order to make that possible. Due to the amount of information and agreements as well as legislation constantly changing, the best way to get the latest updates is to refer to the Tax Administration of your country. 


On the EU side, information about non-EU companies can be found at as well.