Poland: monthly CIT advance payment due by the 20th (quarterly option for small taxpayers)
Every month, due by the 20th. · Small taxpayers (mali podatnicy, turnover ≤ EUR 2 million including VAT in the prior year) may elect quarterly advances instead, still paid by the 20th of the month following each quarter.
What changes
CIT taxpayers must calculate and pay a monthly advance on corporate income tax by the 20th of the following month. Small taxpayers (mali podatnicy, turnover up to EUR 2 million) may instead elect quarterly advances, due by the 20th of the month after each quarter, provided they notify the choice via their annual CIT return.
Who is affected
All Poland-registered CIT taxpayers (sp. z o.o., S.A. and other CIT payers) generating taxable income during the year.
Sizes: micro, small, medium, large · Sectors: All sectors
What to do
Calculate the monthly CIT advance as the difference between cumulative tax due since the start of the tax year and advances already paid, and pay it by the 20th of the following month (no monthly declaration is filed - the advance is only reconciled in the annual CIT-8 return). Small taxpayers may elect quarterly advances instead; the advance for the final month/quarter can be skipped if the annual return and balance are filed before that deadline.
Next occurrences
Penalty
Late-payment interest under Article 53 of the Tax Ordinance on CIT advances paid after the deadline.
Sources
- biznes.gov.pl - Podatek CIT - informacje podstawowe (monthly/quarterly CIT advance rules, 20th-of-month deadline) (www.biznes.gov.pl)
Last verified 8 September 2026. Informational only, not legal advice.