Comarch EDI KSeF hits 15 million documents processed for 100+ Polish market leaders
Comarch EDI KSeF has processed over 15 million documents since February 2026 for more than 100 large Polish enterprises across retail, logistics, manufacturing, energy, and banking.
Comarch EDI KSeF has processed over 15 million documents since February 2026 for more than 100 large Polish enterprises. The platform bridges internal data formats into Poland’s mandatory National e-Invoice System (KSeF) schema, eliminating costly ERP changes and ensuring 24/7 operational continuity.
Comarch EDI KSeF has processed over 15 million documents since February 1, 2026, serving an elite group of over 100 market leaders from critical Polish economic sectors. The clients span large-scale retail (FMCG), global logistics, heavy manufacturing, energy, and banking.
The milestone reflects Comarch’s position as a stable partner for Poland’s mandatory e-invoicing transition. High-volume enterprises require seamless, high-performance integration with the National e-Invoice System (KSeF) to maintain business continuity without downtime or latency.
How Comarch EDI KSeF works
The platform acts as an intelligent translator between internal client systems and the government portal. It supports a wide array of formats including IDoc, EDIFACT, XML, JSON, and CSV. It automatically maps these proprietary data structures into the official KSeF schema, eliminating the need for costly and time-consuming ERP modifications.
Key technical capabilities include:
- Semantic Pre-validation: Automated checks flag errors such as missing purchase order numbers, incorrect VAT rates, or logical inconsistencies before the invoice reaches the Ministry of Finance gateway. This prevents document rejection and mitigates fiscal penalties.
- Legacy Data and Attachment Management: Because the standard KSeF schema does not support traditional attachments, the solution distributes rich business context (PDFs, technical specifications, delivery notes) through embedded links or parallel data streams.
- Whitelisting and Counterparty Verification: Integrated automation verifies the taxpayer’s status in the “White List” (Wykaz Podatników VAT) in real-time during invoice issuance, securing tax settlements and financial flow.
Operational stability and compliance
The platform demonstrates proven stability under peak operational loads without failure. It securely manages transactions for over 100 onboarded large-scale organizations. Automation significantly mitigates operational risk by eliminating human error in tax reporting and ensuring 100% compliance with the latest government mandates.
Implementation and early adoption were guided by interdisciplinary teams of IT engineers, tax consultants, and business analysts. This allowed companies to test and exchange real-time data with KSeF well ahead of mandatory deadlines.
“Reaching the milestone of 15 million documents exchanged with KSeF for over 100 clients is the ultimate proof of our platform’s maturity. In the era of digital tax revolution, we don’t just promise stability. we deliver it, backed by hard operational data.”
Mateusz Czarnecki, Product Management Director at Comarch
As Polish enterprises navigate mandatory electronic invoicing, maintaining stable, proven infrastructure remains a top priority. The rapid adoption and massive data volumes handled by Comarch EDI KSeF reflect this critical market need.