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04 Jul 2026
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KSeF for sole proprietorships (JDG)

KSeF for sole proprietorships (JDG) KSeF, the National e-Invoicing System, is a state system for issuing, receiving and ...


24 Mar 2026
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VAT refunds in 2026 – new deadlines and rules, new JPK

The introduction of the mandatory KSeF changed not only the way invoices are issued, but also something every business o...


31 Jan 2026
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How to receive an invoice in KSeF step by step - SMEs and sole proprietors

Below are 5 steps on how to receive an invoice in KSeF: Step 1: Choose a tool for receiving invoicesThe Ministry of Fina...


19 Oct 2025
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KSeF - Special types of invoices - changes

KSeF, the National e-Invoice System, introduces significant changes in the rules for issuing and circulating invoices. T...


11 Oct 2025
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KSeF - Authentication Methods

To use KSeF, every person performing any action in the system must have the appropriate authorization. Before the system...


29 Sep 2025
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KSeF - Invoice Receipt Obligation from February 1, 2026

KSeF – Pay Attention to the Invoice Receipt Obligation!The Ministry of Finance has published an updated timeline for the...


11 Jul 2025
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KSeF – The Invoicing Revolution Is Coming. Check If and When It Applies to You

The National e-Invoice System (KSeF) is a new tax administration tool that will soon become mandatory for most entrepren...