FAQ

Find your answer — 100 answers in total

KSeF 2.0 – National e-Invoice System

Questions about integration, TEST/DEMO/PROD environments, sending and receiving e-invoices

All KSeF questions →
Basic information about KSeF 2.0
5 questions
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Foreign invoices & private clients
3 questions
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Purchase invoices (received)
2 questions
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Invoice types & supported documents
5 questions
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Multi-entity support (multiple companies)
1 question
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UPO & invoice recovery
2 questions
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JST – Public sector entities
4 questions
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Troubleshooting
8 questions
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Faktura VAT 2026 Program

Installation, licence, configuration, invoicing and document appearance

All questions →
Installation & updates
11 questions
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Licence & registration
12 questions
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Program configuration
10 questions
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Program operations
27 questions
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Document & print appearance
10 questions
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