Polish employers face common pitfalls when filing 2026 PIT-11 tax forms, including missed deadlines, incorrect data, and improper documentation.
PIT-11 Deadline in 2026 – When Must Employers Submit Declarations?
February is a period of intensive work for employers related to providing PIT-11 information to employees and other individuals for whom they acted as income tax payers in the previous calendar year. These documents must reach all employees and other taxpayers whose incomes have been reported in PIT-11. The deadline for fulfilling this obligation, as a rule, expires at the end of February. However, in 2026, due to the last day of the month falling on a weekend, the deadline has been moved to March 2.
“Zero” Tax and PIT-11 – Does No Withholding Exempt from Obligation?
One of the most common mistakes is assuming that no withholding tax income tax means no obligation to prepare PIT-11. Meanwhile, even when applying the “young people up to 26” exemption or other tax exemptions up to the limit of 85,528 zł, the PIT-11 information must be prepared and submitted.
The PIT-11 document serves an important function – it is confirmation for the tax authority that exemptions or tax reliefs have been correctly applied. That is why even with zero tax, one must remember to prepare and submit PIT-11 both to the tax office and the taxpayer, says Klaudia Ziętkowska.
Where to Send PIT-11? Tax Office Jurisdiction
Another common mistake employers make is indicating the wrong tax office. PIT-11 should be directed to the office competent according to the taxpayer’s place of residence, not the employer’s headquarters.
Most Common Technical Errors in PIT-11: Outdated Form Templates
The Ministry of Finance regularly updates tax form templates. However, it happens that entrepreneurs submit PIT-11 on the wrong form, which can result in its rejection by the e-Declarations system or a request for correction.
Current versions of forms are available for download on the podatki.gov.pl website in the “Electronic Forms for Payers” section. The version of the form can be recognized by the marking in the lower right corner of each document.
Taxpayer Identification Data in PIT-11 – Why PESEL is Crucial?
Frequently encountered errors also include missing or incorrect identification data. This problem particularly concerns the lack of a PESEL number, which is currently the primary identifier for individuals not running a business. Similar difficulties also occur when filing tax returns for foreigners in the context of determining the proper tax residence.
Substantive Errors in Amounts: Income Generation Costs and Non-wage Benefits
The most serious violations are substantive and concern the reported amounts. Typical errors include incorrect reporting of income generation costs and non-wage benefits.
PIT-11 Correction – How to Fix Errors in Employee Declarations?
Every employer error should be corrected by them. Technical violations, such as typos or incorrect numbers, are most often corrected by submitting a corrected PIT-11 to both the tax office and the taxpayer. Meanwhile, substantive errors require not only a PIT-11 correction but often also a re-verification of the settlements.
One must remember that the responsibility for the correct calculation, collection, and payment of income tax advances always rests with the payer. Underpayment of advances may result in liability under the Fiscal Penal Code. Additionally, for not sending PIT-11 or submitting it after the deadline, there is a threat of a fine reaching up to 180 daily rates.
