KSeF — Preparation and Implementation
Complete preparation for the mandatory Polish National e-Invoicing System (KSeF): choosing an integration model (Taxpayer App, API, ERP), rollout timeline, permission management, and procedures for system outages and offline mode.
A mandate that affects every business in Poland
KSeF is not an optional upgrade — it is a legal obligation covering VAT invoicing for every company operating in Poland, taking effect in stages from February 2026. Companies that postpone the rollout to the last minute risk running out of time for integration testing and team training before go-live. This training focuses on the organizational side of the rollout — not code, but decisions, timelines, and the people who need to be ready on day one.
From choosing an integration model to production readiness
Participants walk through the full decision path: choosing an integration model that fits invoice volume and the existing accounting system, configuring permissions in KSeF, and testing in the demo environment before moving to production. We also cover the differences between the Taxpayer App, API integration, and built-in ERP solutions — and how to pick the right model without overpaying for functionality the company doesn’t need.
Fallback procedures and exception handling
Offline mode and KSeF system outages are scenarios your company needs to prepare for in advance, not improvise on the day something breaks. In the workshop we build a fallback procedure checklist, cover handling corrective invoices in the new system, and review the most common rollout mistakes seen in earlier phases of the KSeF pilot.
Benefits
- Plan a KSeF rollout timeline that meets the mandatory deadlines
- Map company invoicing processes to the structured invoice logical schema
- Choose the right integration model (API, Taxpayer App, accounting software)
- Prepare the organization to handle exceptions, outages, and offline mode
Who is this training for?
Prerequisites
- Basic understanding of the company's invoicing process
- Familiarity with the accounting/IT department structure (helpful, not required)
Training program
The KSeF mandate — scope, deadlines, consequences
- Rollout timeline for the mandatory KSeF obligation in 2026
- Who the mandate applies to and which invoices it covers
- Penalties and consequences of non-compliance
- How KSeF relates to existing paper and PDF invoicing
Invoice logical structure and integration models
- Structured invoice logical schema and required fields
- Integration models: Taxpayer App, API, accounting/ERP software
- Choosing the integration model that fits company size and industry
- KSeF number, UPO confirmation, and the invoice lifecycle in the system
Step-by-step organizational rollout
- Project timeline and team roles for the rollout
- Granting permissions and managing access in KSeF
- Testing the integration in the demo environment before go-live
- Training the accounting and sales teams on the new process
Handling exceptions and fallback procedures
- Offline mode and procedures for KSeF system outages
- Corrective invoices and correction notes in KSeF
- Common rollout mistakes and how to avoid them
- Coordinating with business partners and JPK reporting integration
Delivery Methods
Online
- Convenience of participating from anywhere
- Interactive live sessions with trainer
- Materials available for 30 days
- No travel costs
On-site
- Direct contact with trainer and group
- Intensive hands-on workshops
- Networking with other participants
- Full focus on learning
Frequently asked questions
From when is the KSeF mandate binding for my company?
The KSeF mandate takes effect in stages starting February 2026 and will eventually cover every business issuing VAT invoices in Poland. In the training we clarify the timeline by company size and help you build a realistic rollout plan with time for integration testing.
How is this different from KSeF API — Deep Technical Workshop for Developers and Architects in our catalog?
That course teaches API integration from a developer's perspective — authorization, XML submission, error handling in code. This training walks through the organizational rollout: choosing an integration model, project timeline, permission management, team training, and fallback procedures — aimed at decision-makers and rollout coordinators, not developers.
Which integration model should I choose — Taxpayer App, API, or accounting software?
It depends on your invoice volume and existing ERP/accounting system. Companies with a small number of invoices can use the free Taxpayer App, while medium and large companies typically integrate KSeF directly with their accounting system via API. In the training we help you match the model to your specific situation.
What happens if the KSeF system goes down?
The Ministry of Finance provides an offline mode and fallback procedures with defined rules for issuing invoices outside the system and submitting them retroactively. In the training we walk through these procedures step by step, so your company has a ready fallback plan before going live.
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