Poland eases its digital tax shift
Poland is accelerating the digitalisation of tax control in 2026 while extending some deadlines and introducing relief for small businesses. Companies have gained more time to prepare electronic JPK accounting files, but they still need to adapt to mandatory KSeF e-invoicing and expanded SENT transport monitoring, which now covers clothing and footwear.
Poland’s tax reform enters its operational phase
Poland’s tax system is going through one of its most intensive digital transitions in years. The changes affect accounting reporting, electronic invoicing, transport monitoring, tax procedures and selected reliefs. For businesses, this is no longer an abstract reform. It is an operational task involving accounting systems, data quality, document workflows and staff training.
RTC Suite’s publication highlights several May developments relevant to companies operating in Poland or through a Polish structure. The main message is that the state is not abandoning its shift toward more detailed digital control, but it recognises that businesses need a transition period.
This is especially visible in JPK, or Jednolity Plik Kontrolny. In English, it is usually translated as the Standard Audit File for Tax. It is a standardised electronic file containing data from accounting and tax systems, submitted to the tax authorities in a defined structure. JPK was initially associated mainly with value-added tax, but digital reporting is now expanding into income taxes.
JPK_CIT gets more time for the first filing
The most sensitive change concerns JPK_CIT, meaning electronic accounting books for corporate income tax purposes. Corporate income tax in Poland is abbreviated as CIT. The obligation is not just a simple annual return; it involves submitting structured accounting data that allows tax authorities to analyse company transactions in greater detail.
The regulation of the Minister of Finance and Economy dated February 16, 2026 extended the deadline for submitting accounting books for corporate income tax. For companies whose tax year follows the calendar year, the first deadline under the transition rules effectively moves to July 31, 2026, rather than coinciding with the March CIT-8 annual return deadline.
For business, this matters. Preparing JPK_CIT requires more than exporting a file. Companies need to verify their chart of accounts, classify transactions, reconcile accounting and tax data, test software and confirm authorisations for submission. An error in this structure can create not only a technical rejection, but also a tax risk, additional questions from inspectors and possible audits.
JPK deadlines may become part of the permanent calendar
A government draft proposes a broader rule: the deadline for income-tax JPK filings by entities keeping accounting books would be extended to the end of the seventh month after the end of the tax or financial year. If adopted, this model would give businesses a more realistic calendar for year-end closing, audit, financial-statement approval and preparation of electronic tax data.
This is particularly important for large companies, groups, foreign investors and Polish subsidiaries of multinational corporations. Their annual closing often happens in stages: local accounts, tax adjustments, audit, consolidation and group reporting. Requiring detailed electronic books too early would increase the risk of errors.
The extension does not cancel the obligation. On the contrary, it shows that digital reporting is becoming a permanent part of tax control. The state is giving businesses more time to prepare the data properly, while expecting more complete, standardised and verifiable information in return.
JPK_PIT will affect entrepreneurs and partnerships
Reporting is also changing for PIT, or personal income tax. In Poland, this tax matters not only for employees, but also for some entrepreneurs, partnerships and individuals conducting business in structures where income is taxed at the individual level.
The new digital-documentation rules for PIT gradually expand the obligation to keep tax books and registers electronically. The first group includes entrepreneurs that submit JPK_V7M every month, meaning the monthly value-added tax reporting file. The obligation will then extend to other groups of taxpayers.
For small companies and sole traders, this means a move from familiar accounting routines to a fully software-based environment. Even if a business is not a large taxpayer, it must monitor data formats, accounting-program compatibility and filing deadlines.
KSeF changes daily invoicing
A separate part of the reform is KSeF, or the National e-Invoice System. Unlike JPK, which focuses on reporting and the submission of data to tax authorities, KSeF changes the process of issuing and receiving invoices.
From February 1, 2026, the obligation to issue invoices through KSeF began for taxpayers whose sales value including tax exceeded PLN 200 million in 2024. From April 1, 2026, the system applies to other taxpayers, except those temporarily covered by relief for low monthly sales. Until the end of 2026, such taxpayers may issue invoices outside KSeF if the total monthly gross value of those invoices does not exceed PLN 10,000.
For companies, this means an invoice is no longer only a document exchanged between seller and buyer. It passes through a state platform, uses a structured format and becomes visible to the tax administration almost in real time. This reduces room for errors and fictitious transactions, but increases business dependence on integration with the government interface.
SENT expands to clothing and footwear
The most visible change for logistics and trade concerns SENT. This is Poland’s electronic system for monitoring the transport of selected goods. It has long been important for fuel, alcohol, tobacco products and other categories with elevated tax-fraud risk. From March 17, 2026, the system was expanded to new groups of goods: clothing, clothing accessories, second-hand clothing and footwear.
The National Revenue Administration says the expansion covers goods classified under relevant Combined Nomenclature codes. For business, this means registration or updating company details on the PUESC electronic customs and tax services platform, filing transport notifications and meeting tracking requirements.
The change matters for importers, distributors, wholesalers, logistics operators, marketplaces and companies transporting textiles through Poland. Clothing and footwear have become more sensitive for tax control because of risks linked to grey imports, undervaluation, fictitious supplies and competition from goods entering from outside the European Union.
Micro-entrepreneurs receive SENT relief
In May 2026, the SENT rules were adjusted. A regulation dated May 12 introduced exemptions from the obligation to report clothing and footwear transport for certain micro-entrepreneurs registered in Poland’s Central Register and Information on Business. It also covers selected civil-law partnerships and registered partnerships where all partners are individuals.
The purpose of the relief is to avoid overburdening small traders, for whom the new requirements could be disproportionate. Micro-entrepreneurs often move goods between a business location, market, retail point or storage area in small batches. Full SENT reporting for such movements could create administrative costs comparable to the business margin.
The exemption does not mean freedom from control. Companies must verify the conditions, thresholds, route, nature of the movement and their own status. A mistake in qualification may result in penalties, especially if the transport falls outside the relief.
Poland strengthens control without a sudden shock
Poland’s 2026 tax policy shows a dual strategy. On one hand, the state is strengthening digital control and gaining more structured data on invoices, accounting and the movement of goods. On the other, it is adjusting deadlines and introducing exemptions where the risk of overburdening business becomes too high.
For foreign investors, this is an important signal. Poland remains one of Central and Eastern Europe’s largest markets, but doing business there increasingly requires mature tax infrastructure. Basic local accounting is no longer enough. Companies need integrated systems for accounting, e-invoicing, tax control, logistics monitoring and internal compliance.
Compliance means the procedures a company uses to follow laws, internal rules and regulatory requirements. In the Polish tax context, it is becoming part of operational resilience rather than a support function. An error in an electronic file, invoice or transport notification can quickly become a tax event.
Digital tax control raises the cost of errors
The main difference between the new rules and the old model is the speed with which inconsistencies can be detected. Previously, tax authorities often identified problems through declarations, audits or document requests. Now, data arrives in a standardised electronic form. That makes it easier to compare sales, purchases, inventory movements, transport records and tax obligations automatically.
For compliant businesses, this can be positive. Fewer manual documents and unstructured files reduce disputes over format. But for companies with outdated accounting systems, 2026 is a stress test. Problems may arise not only in tax departments, but also in IT, logistics, accounting, procurement and sales.
Companies operating across several regimes are especially exposed: importers, marketplace sellers, businesses using Polish warehouses, companies invoicing large clients and groups that also include small entities or sole traders.
Tax digitalisation becomes a competitive factor
Poland is moving in the same direction as many European Union countries: more e-invoices, more machine-readable data, more supply-chain control and less room for tax arbitrage. But the pace of implementation makes the Polish market particularly demanding for companies used to softer administration.
For large players, digitalisation can become an advantage. Those that have already adapted accounting systems, warehouse records, e-invoicing and transport controls will face lower operational risk. Small and mid-sized companies that postpone preparation may face higher costs, dependence on external accountants and penalty exposure.
As experts at International Investment report, Poland’s 2026 tax changes should not be seen as a simple deadline extension. They mark a shift toward a model in which the tax administration sees business through the digital trail of its operations. The JPK deadline extension reduces short-term pressure, and SENT exemptions protect part of the micro-business sector, but the overall trend remains strict: companies operating in Poland need to invest in data, processes and controls. Otherwise, tax digitalisation will become not a transparency tool, but a source of new operational risk.
FAQ on Poland’s 2026 tax changes
What is JPK in Poland?
JPK is the Standard Audit File for Tax. It is a standardised electronic file containing accounting and tax data submitted to the tax authorities in a defined structure.
What changed for JPK_CIT in 2026?
The deadline for submitting accounting books in JPK_CIT format was extended. For companies with a calendar tax year, the first transition deadline effectively falls on July 31, 2026. Broader legislative changes would set the deadline at the end of the seventh month after the tax or financial year.
What is KSeF?
KSeF is Poland’s National e-Invoice System. Companies use it to issue and receive structured electronic invoices through a state platform.
When did KSeF become mandatory?
For the largest taxpayers with 2024 sales above PLN 200 million, the obligation began on February 1, 2026. For other taxpayers, it started on April 1, 2026, with temporary relief for low monthly sales until the end of 2026.
What is SENT?
SENT is Poland’s electronic system for monitoring the transport of selected goods. It is used to control movements of goods with elevated tax-risk exposure.
Why was SENT expanded to clothing and footwear?
Clothing and footwear were added because of risks related to grey imports, undervaluation, fictitious supplies and tax fraud in supply chains. The new rules have applied since March 17, 2026.
Who received SENT relief in May 2026?
Relief was introduced for certain micro-entrepreneurs registered in Poland’s business register, including selected civil-law and registered partnerships. It applies only if specific conditions are met.
What should companies operating in Poland do now?
Companies should check accounting systems, charts of accounts, JPK formats, KSeF integration, invoicing procedures, logistics routes and SENT obligations. Preparation should involve tax, IT, sales, procurement and logistics teams.