Poland, 2026: find the exact invoice that kills your PLN 10,000/month KSeF exemption, and the date it stops mattering.
Headroom left this month
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PLN
Invoices of your size that still fit
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invoices
Verdict
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You must be issuing in KSeF from
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Days until KSeF covers everyone
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days
Article 106ni maximum exposure per month
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PLN
When those fines can first be imposed
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Every number above is free, with no key and no limit. Keeping the next month from surprising you is the paid layer: a .csv export of your month-by-month headroom ledger and a monthly alarm that re-checks the limit on the 1st.
$60 once · one licence key per person or team seat · One hour with a Polish tax adviser is quoted at PLN 350-599 net (about $95-165); a written opinion starts at PLN 1,999.
Headroom to the PLN 10,000 limit Counts the gross B2B invoices you have already issued this month against the exemption ceiling.
Which invoice crosses Tests your next invoice: the one that breaks PLN 10,000 must itself be issued as a structured invoice.
Your KSeF wave Maps 1 Feb 2026, 1 Apr 2026 and 1 Jan 2027 onto the status you pick, and counts the days left.
Article 106ni maximum exposure Up to 100% of the VAT shown, or 18.7% of the gross amount where no VAT is shown.
When fines really start Carries the Ministry of Finance announcement of 16 Sep 2026 deferring the sanctions to 1 Jan 2028.