Payment instruction

Conference fee has to be paid by bank transfer in Euro (EUR) or Polish zloty (PLN).

The amount of the conference fee depends on the choices made during registration. Full information on the conference fee, possible discounts and additional fees can be found here.

IMPORTANT NOTE
Starting from 1 April 2026, the Silesian University of Technology will issue sales invoices through the National e‑Invoicing System (KSeF). Please review the following rules to avoid unnecessary invoice corrections.
Domestic Entities (Poland)
All invoices will be issued exclusively in KSeF, where they can be downloaded directly by the company. If your organisation requires specific information to be included on the invoice (e.g., details of a third party (P3)), such data must be provided in advance. Missing or late information may result in the need for invoice corrections.
Foreign Entities (Outside Poland)
Invoices will be issued in KSeF.
Companies will receive only a visualisation of the invoice generated from KSeF.
Please note: the visualisation is not an official invoice. It contains a verification code that allows the company to check the invoice’s authenticity in KSeF.
Private Individuals
Invoices for private persons will be issued outside of KSeF.
Any invoice correction will require confirmation from the individual (e.g., signed receipt or acknowledgement).
Required Tax Identification
To issue an invoice, the following information is required:

• NIP – for Polish entities
• VAT UE Number – for EU entities***
• ID Number / Tax Identification Number – for non‑EU entities

***Note: Invoices for EU members can be issued correctly, only if they fulfill the following rules.
The data for issuing the invoice provided by you in the conference system should match the data authorized by VIES VAT number validation website: https://ec.europa.eu/taxation_customs/vies/#/vat-validation. If the data on VIES VAT number validation website does not reflect the correct data of your university/company ask your administrative office to correct the data in the European VAT system. Please note, that the following information should be the same in both systems:

• VAT number
• Company name
• Full company address

Additionally, we inform you that:

1. At the top of the invoice in the field "customer" we cannot mention the first and last name of the participant unless the person is the owner of the company. The first and last name may be mention in the name of the item/service, e.g., Conference fee CPOTE 2026, 23-25.09.2026, "First and last name of the participant."
2. If the department's/faculty's/branch's name of your company is necessary and it must be included in the invoice as the "customer", please let us know. The branch name will be added below the main address (which complies with VIES website).

If one of the above additional information is needed on your invoice please write it in the field "Additional information concerning invoice" in Data for invoice panel.