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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Tax audits in Poland: how KSeF and JPK_CIT are changing tax supervision
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Date05 May 2026
Tax audits in Poland are entering a new stage of digitalisation. For companies, this means a change that goes much deeper than the implementation of the National e-Invoicing System (KSeF)...
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Self-billing in the National e-Invoicing System in Poland (KSeF) and VAT deduction
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Date24 Apr 2026
Self-billing in the National e-Invoicing System in Poland (KSeF) remains permissible, but after the individual tax ruling issued by the Director of the National Revenue Information (KIS) on 27 February...
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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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How to log in to the National e-Invoicing System (KSeF) in Poland and avoid access issues? A guide for entrepreneurs
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Date17 Mar 2026
In 2026, the National e-Invoicing System (KSeF) in Poland became an important part of day-to-day business operations. However, obtaining access to the system is only the first step. Businesses still...
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The National e-Invoicing System (KSeF) structured invoice for non-transaction transfers of own goods to an EU warehouse – is it required?
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Date09 Mar 2026
In Poland, the move to mandatory e-invoicing through the National e-Invoicing System (KSeF) is forcing businesses to revisit VAT scenarios that were previously treated as pure logistics. One of the...
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Fixed establishment (FE) for National e-Invoicing System (KSeF) in Poland – MoF guidance of 28 January 2026 and practical implications for businesses
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Date17 Feb 2026
A fixed establishment (FE) is a VAT concept describing a situation where a taxpayer — despite having no registered office in Poland — has a sufficiently stable and organised presence...
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