BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//EU Deadline Radar//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:EU Deadline Radar
NAME:EU Deadline Radar
BEGIN:VEVENT
UID:pl-ksef-mandatory-all-businesses@eudeadlines.eu
DTSTAMP:20261025T061720Z
DTSTART;VALUE=DATE:20260401
DTEND;VALUE=DATE:20260402
SUMMARY:Poland KSeF: Poland: KSeF e-invoicing mandatory for all VAT taxpaye
 rs (except the smallest micro-firms)
DESCRIPTION:Since 1 April 2026 all businesses in Poland must issue B2B invo
 ices through the National e-Invoicing System (KSeF) in the FA(3) XML schem
 a\; the system assigns the legal invoice number and the buyer receives it 
 via KSeF. Only micro-entrepreneurs with monthly sales up to PLN 10\,000 (g
 ross) have until 2027. Paper and PDF invoices are no longer valid B2B invo
 ices.\n\nWho is affected: Every VAT-registered business in Poland\, includ
 ing foreign companies with a Polish fixed establishment.\n\nWhat to do: Co
 nnect your ERP or invoicing tool to KSeF 2.0 with authentication tokens or
  a qualified signature\, implement the FA(3) schema and offline24 fallback
  mode\, and train staff on retrieving purchase invoices from KSeF. Use the
  2026 penalty-free period to fix errors.\n\nPenalty: Penalties for non-com
 pliance apply from 2027-01-01\n\nNote: Large taxpayers (2024 sales above P
 LN 200M) started issuing invoices via KSeF on 2026-02-01\; from that same 
 date\, receiving invoices through KSeF also became mandatory for all regis
 tered VAT taxpayers regardless of size. Penalties for KSeF errors are susp
 ended until 2027-01-01.\n\nStatus: In force\nhttps://eudeadlines.eu/deadli
 ne/pl-ksef-mandatory-all-businesses
URL:https://eudeadlines.eu/deadline/pl-ksef-mandatory-all-businesses
CATEGORIES:PL,Poland KSeF
LAST-MODIFIED:20260908T000000Z
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Poland KSeF: Poland: KSeF e-invoicing mandatory for all VAT tax
 payers (except the smallest micro-firms) — due in 7 days
TRIGGER;VALUE=DURATION:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Poland KSeF: Poland: KSeF e-invoicing mandatory for all VAT tax
 payers (except the smallest micro-firms) — due in 1 day
TRIGGER;VALUE=DURATION:-PT15H
END:VALARM
END:VEVENT
END:VCALENDAR