KSeF Integration
Invoice.app integrates with Poland's National e-Invoicing System (Krajowy System e-Faktur), enabling you to submit, receive, and manage structured electronic invoices in full compliance with Polish regulations.
Invoice Submission
Send invoices directly to the KSeF platform with automatic XML generation and encryption. Your invoices are validated, assigned an official KSeF reference number, and you receive a UPO (Official Confirmation of Receipt) once accepted.
Multiple Invoice TypesComing Soon
Submit VAT invoices and corrective invoices through KSeF in the structured XML format. Support for advance payment invoices and settlement invoices is coming soon.
Bi-directional Sync
Automatically download invoices received through KSeF. Keep your local records perfectly synchronized with the national system.
Status Tracking
Monitor the real-time status of every submitted invoice — from pending validation to accepted, rejected, or requiring correction.
Correction Management
Create and submit corrective invoices linked to the original KSeF documents. Maintain a complete audit trail of all corrections.
QR Code Generation
Generate QR codes for your KSeF invoices that link directly to the official document in the national system.
Offline ModeComing Soon
Create invoices in offline mode and queue them for submission by the next business day. Full support for KSeF system downtime and emergency modes included.
Security & Authentication
Authenticate with KSeF using encrypted authorization tokens and secure all communications with enterprise-grade encryption.
Ready to get started with KSeF?
Download Invoice.app and start submitting e-invoices to Poland's National e-Invoicing System today.