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 | — | PLN |
|---|---|---|
| Invoices of your size that still fit | — | invoices |
| Verdict | — | |
| You must be issuing in KSeF from | — | |
| Days until KSeF covers everyone | — | days |
| Article 106ni maximum exposure per month | — | PLN |
| When those fines can first be imposed | — |
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 · 7-day full refund. 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.
Get the full version — $60This page is the working piece. The full pack has everything below.
Poland, 2026: find the exact invoice that kills your PLN 10,000/month KSeF exemption, and the date it stops mattering.
One hour with a Polish tax adviser is quoted at PLN 350-599 net (about $95-165); a written tax opinion starts at PLN 1,999 (about $545) - sources: wardzala.com.pl and adaptax.pl price lists, checked 2026-09-17.
Buy the full version — $60It takes the gross B2B invoices you have already issued this month and tells you how much of the PLN 10,000 exemption is left, whether your next invoice crosses it, and the date from which you must issue in KSeF. It also computes the Article 106ni maximum exposure on invoices you keep issuing outside the system.
Polish micro-entrepreneurs still invoicing on paper under the PLN 10,000 monthly exemption, and foreign companies VAT-registered in Poland whose Polish turnover is small enough that nobody told them a wave applies. Also for accounting offices watching dozens of small clients drift toward the limit.
Because the timetable moved twice. Chatbots still repeat that KSeF sanctions begin 1 January 2027; the Ministry of Finance announced on 16 September 2026 that they are deferred to 1 January 2028. They also miss the sharpest rule: you lose the exemption on the invoice that crosses PLN 10,000, not the following month.
Every number is free, forever, with no key and no limit: headroom, the crossing invoice, your wave date, days remaining and the statutory maximum. The $60 licence key adds two things on a different axis - a .csv export of your month-by-month ledger, and a monthly alarm that re-checks your headroom on the 1st.
Polish tax advisers quote PLN 350 to 599 net per hour for consultations, and written opinions start at about PLN 1,999. A single hour spent asking which KSeF wave you fall into costs several times the price of this extension, and you would have to ask again every time the ministry moves a date.
One question, answered by the person who built it. Your email only if you want the answer sent.