Ladies and Gentlemen,

We would like to inform you that due to the large number of inquiries related to the availability of the C/C++ library, we have decided to prepare it and make it available to you. All the most important functions available in the nip24.pl API have been implemented in the library:

  • checking the taxpayer's status in the VAT register (getVATStatus)
  • checking a foreign contractor in the VIES system (getVIESData)
  • searching and downloading data necessary to issue an invoice (getInvoiceData)
  • searching and downloading detailed data of entities (getAllData)
  • checking the company's business status (isActive)
  • downloading current user account information (getAccountStatus)
  • verification of the correctness of the NIP, REGON and KRS numbers

The library with the complete source code can be downloaded from: Download.

The method of using the library along with a description of the available functions is available on the website: Documentation.

If you have any questions or technical problems, please contact Customer Service Office.

en_GBEnglish (UK)