Starting in 2027, companies in Slovakia will face a major shift in electronic invoicing. Invoices will transition from PDF documents to structured data formats and will be delivered via the Peppol network and certified digital mail providers. The presentation will explore the practical implications of e-invoicing for legal entities, ERP systems, accounting, and internal business processes. It will focus on business readiness, new regulatory requirements, the automation of invoice processing, and the role of Digital Postmen in Slovakia’s emerging digital infrastructure.