The KSeF is not simply another system update. It represents a fundamental overhaul of the entire logic of transaction documentation – one that shifts the burden of responsibility onto new tracks and opens up entirely new categories of tax risk.
Companies that approach the KSeF as yet another IT implementation may be in for a rude awakening. This is, first and foremost, a legal and tax issue – and this usually only becomes apparent only when correcting the matter is already very costly.
To help with this, we have designed a webinar that works a little differently from most.
Instead of safely reviewing legislation, we analyse real cases. Instead of general guidance, we give specific answers. And to this end, we’ve selected 20 questions that most frequently arise from entrepreneurs. We answer each one directly – in terms of what to do, what to avoid, and what risks to factor in.
What kind of questions? Questions such as:
- What should you do with an invoice submitted to KSeF one day after the deadline?
- Does an invoice received outside the system give any right to deduct VAT at all?
- Which cross-border transactions fall within the system, and which remain outside it?
Each of these scenarios is the day-to-day reality of many companies and an issue that is already requiring clarification today.
The webinar’s subject matter has been structured around six thematic blocks. Each takes a close look at a specific factual scenario, identifies the risks, and supplies a solution.
Because with the KSeF, the details really do matter. The difference between the date of issuance and the date on which the KSeF number is assigned, a single field in the invoice structure, one missing tax identification number (NIP) – all these small details can determine whether a company enters into a dispute with the tax authorities and how that dispute ends.
Participants leave the webinar with concrete takeaways and ready-to-use tools – not only with answers to the questions they are already asking today, but also to those that are yet to arise.
AGENDA
BLOCK 1 – VAT and dates: where mistakes are easiest to make
- An invoice dated 31 March submitted to the KSeF on 1 April – VAT for March or April?
- I received an invoice in March by email, but it appears in the KSeF in April – when should I deduct the VAT?
- Does the date on which the the KSeF number is assigned determine the moment of VAT deduction?
- Can I lose my right to deduct VAT because of a delay by the seller in submitting to the KSeF?
- Which date is the relevant one: the date of sale, the date of issuance, or the date of appearance in the KSeF?
BLOCK 2 – Does this Invoice fall within the KSeF at all?
- Must an invoice issued to a natural person (B2C) be submitted to the KSeF?
- I am renting out my private flat to a company – should I issue the invoice via the KSeF?
- Are VAT-exempt invoices subject to the KSeF?
- Must a till receipt bearing a NIP for amounts up to PLN 450 be reported in the KSeF?
BLOCK 3 – Invoices outside the KSeF: what can be settled?
- I received a PDF invoice with no KSeF number – can I book it and deduct the VAT?
- What should you do if a seller was obliged to use the KSeF but issued an invoice outside the system?
- Do I need to wait to post the invoice until it appears in the KSeF?
BLOCK 4 – Corrections: the most common mistakes in practice
- There is an error on an invoice – should I issue a zero-value corrective invoice or a standard correction?
- Can a correction be made to the data only (without changing the amounts)?
- A correction to an invoice predating the KSeF – should it already be issued via the KSeF?
BLOCK 5 – Cross-border transactions: where does the KSeF end?
- Do I submit an invoice issued to an EU counterparty under the reverse charge mechanism to the KSeF?
- Is the export of services outside the EU subject to the KSeF?
- How do I issue an invoice to a foreign counterparty with no VAT number / NIP?
BLOCK 6 – Data and risks: Minor errors, major consequences
- What should you do if a counterparty has no NIP – can the invoice go through the KSeF?
- Can I send a client a PDF invoice and only enter it into KSeF afterwards?
Speakers
Aleksandra Pizon-Jaworska, Attorney-at-Law, Senior Associate, Tax Law
Sławomir Wnuczek, Advocate, Associate, Tax Law
Who is this event for?
We invite entrepreneurs, CFOs, chief accountants and tax specialists who need to prepare their organisations for the implementation of the new regulations.
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Participation in the event is free of charge, subject to registration and application acceptance. The organiser reserves the right to select applications and also to cancel the event.
A link to the online broadcast will be sent to participants the day before the event.

