Foreign language einvoices in Poland’s KSeF - how to prepare for 2026
Starting in 2026, most VAT taxpayers in Poland will be required to issue structured invoices exclusively through the National e-Invoicing System (KSeF). This change will impact nearly every business, from local companies to global exporters. With these new rules, one question arises: can an invoice in KSeF be issued in a foreign language? The answer is more complex than it seems.