Invoice mistakenly submitted to the National System of e-Invoices (KSeF) in Poland – must it be corrected to zero?
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Date21 Aug 2026
An invoice mistakenly submitted to the National System of e-Invoices (KSeF) in Poland after it had already been correctly issued and delivered to the buyer outside the system does not...
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Do invoices for services supplied abroad have to be issued through Poland’s KSeF?
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Date05 Aug 2026
In many cases, Polish businesses must report invoices for services supplied abroad through the National e-Invoicing System (KSeF), even when the services are taxable in another country. The obligation depends...
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E-invoicing in Poland and the UK: comparing KSeF with UK rules
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Date21 Jul 2026
E-invoicing in Poland and the UK follows two different regulatory timelines. Poland introduced the mandatory National e-Invoicing System (KSeF) in stages from 1 February and 1 April 2026. In the...
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Split payment mechanism and KSeF invoices in Poland – what changes for businesses?
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Date07 Jul 2026
The split payment mechanism and KSeF invoices in Poland are becoming an increasingly important practical issue for businesses, accounting departments and finance teams responsible for VAT settlements. Although the split...
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National e-Invoicing System (KSeF) in Poland and VAT deduction – invoices in the system, outside the system and obligations of VAT-exempt taxpayers
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Date19 Jun 2026
The National e-Invoicing System (KSeF) in Poland and VAT deductionis a topic that requires companies to distinguish between several practical scenarios: an invoice issued and received through KSeF, an invoice...
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KSeF and Italian SdI system: comparing mandatory e-Invoicing models in Poland and Italy
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Date11 Jun 2026
KSeF and Italian SdI system comparison is one of the most important reference points for businesses seeking to understand the direction of mandatory e-invoicing in Europe. Poland is implementing the...
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Invoice visualization in the National e-Invoicing System (KSeF) in Poland – when can a PDF create VAT risk?
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Date08 Jun 2026
Invoice visualization in the National e-Invoicing System (KSeF) in Poland is primarily intended to make the data stored in an XML file easier to read. It is not a separate...
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National e-Invoicing System (KSeF) in Poland vs. e-Invoicing in Germany: key differences and challenges for companies
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Date18 May 2026
KSeF vs e-invoicing in Germany is an important topic for companies operating across borders, corporate groups, subsidiaries and businesses working with contractors in both Poland and Germany. Both countries are...
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Corrective invoices in the National e-Invoicing System (KSeF) in Poland – what will change in VAT corrections?
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Date13 May 2026
Corrective invoices in the National e-Invoicing System (KSeF) in Poland will change the way businesses issue, deliver and account for VAT corrections. Once a taxpayer becomes subject to mandatory structured...
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National e-Invoicing System in Poland (KSeF) and scam invoices: why document control is essential
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Date17 Apr 2026
National e-Invoicing System in Poland (KSeF) is changing how invoices are issued, received and circulated within a company, but it does not remove the need to verify them on the...
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