Free eBook | KSeF 2026 – How to Safely Prepare Your Organization

A Practical Guide for Management Boards, Finance and Compliance Departments

The National e-Invoicing System (KSeF) will become mandatory for most businesses starting in 2026. This change affects not only the way invoices are issued, but also the entirety of financial and tax processes as well as internal procedures within an organization.

We have prepared an expert guide that explains how to safely and consciously prepare your company for the implementation of KSeF—from a legal, organizational, and process perspective.

Why does KSeF require legal preparation, not just a technical one?

• document workflows and responsibility for their correctness are changing,

• new tax and operational risks are emerging,

• implementation errors may result in sanctions and disruption of business operations.

For these reasons, KSeF should be treated as a compliance project, not merely a system implementation.

What will you find in the guide?

• an overview of key implementation challenges,

• identification of legal and tax risks,

• proposed internal procedures and policies,

• a practical roadmap for organizational readiness,

• a KSeF readiness checklist,

• case studies from digital transformation projects.