KSeF 2026: new regulations and ERP support

ERP and accounting vendors are expanding KSeF support. Verify your system’s capabilities in advance and plan the migration of invoicing processes.

Solution requirements

• Support for the KSeF API and regular updates for format changes.
• Data validation before submission and clear error messages.
• Bulk processing, queues and status control.
• Archiving, search, audit logs and exports to adjacent systems.
• Signature mechanisms and access control.

Questions to ask your ERP vendor

• Current KSeF support level and update roadmap.
• Compatibility with your version and required modules.
• Test environment availability, integration examples and SLA.
• Migration tools for master data and settings.

Migration plan

1. Inventory invoicing scenarios and user roles.
2. Configure VAT mappings, numbering and description templates.
3. Pilot with selected units or customer groups.
4. Check load and resilience: queues, timeouts, retries.
5. Scale up to the whole organisation.

Test scenarios

• Base e-invoice, advance payments, partial payments.
• Corrections, cancellations, returns.
• Different VAT rates and currencies.
• Error handling and resubmission.

Operations

• Status monitoring and alerts for owners.
• Regular master-data updates and consistency checks.
• Audit logs and archive for internal and external control.

Early preparation simplifies the transition and reduces risks during mandatory adoption.