KSeF mandatory from April 1, 2026 — get prepared before it's too late
Mandatory from April 1, 2026

Master KSeF before it's too late

Practical online course led by an expert. Learn to issue e-invoices, manage permissions, and prepare your company for Poland's mandatory National e-Invoice System.

31video lessons
7modules
6h+of content
PDFdownloads
100%VAT penalty for KSeF errors
Apr 1mandatory deadline 2026
FA(3)new XML schema
24/7course access
Curriculum

Curriculum

7 modules, 30+ video lessons, downloadable materials

01Free preview

KSeF Fundamentals

What KSeF is, why it exists, implementation deadlines, penalties from 2027.

02

Setting Up Access

Registering in KSeF, permissions, authorization tokens, trusted profile and e-ID.

03

FA(3) Schema — XML Structure

Required and optional fields, validation, attachments, common errors.

04

Issuing & Receiving Invoices

Using the Taxpayer Application, popular accounting software, KSeF number in transfers.

05

Emergency Mode & Edge Cases

Offline/offline24 mode, corrections, self-billing, foreign invoices, B2C.

06

Organizing Your KSeF Workflow

Archiving, reconciliation with accounting systems, VAT reporting.

07

Industry-Specific Guidance

KSeF in construction, e-commerce, public sector, transport and logistics.

Who is this course for?

Accountants & bookkeepers

You handle invoices for multiple clients and need to implement KSeF across all of them.

Business owners

You run a company in Poland and need to understand your obligations without legal jargon.

Foreign companies in Poland

You operate in the Polish market and need to understand KSeF as a foreign entity.

Pricing

Pricing

One-time payment, lifetime access

Individual

349
PLNone-time
  • All 7 modules
  • 30+ video lessons
  • Downloadable PDF materials
  • Course updates included
Buy course

Premium

1,499
PLNone-time
  • Everything in Team
  • Monthly live Q&A sessions
  • Email support from expert
  • Priority access to new content
Buy Premium

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