JPK CIT Filing Deadline Extended to July 31, 2026 — New Structured Tax Reporting Rules
Poland extends the first JPK CIT (Standardized Audit File for Corporate Income Tax) submission deadline to July 31, 2026, giving businesses four extra months to adapt accounting systems and prepare mandatory electronic filing of detailed financial records.
What Is JPK CIT?
Starting from 2026, Poland is rolling out JPK CIT — a new requirement to submit detailed accounting and tax data in standardized XML format. This is part of Poland's ongoing digitalization of tax reporting, following the earlier KSeF e-invoicing system.
The new SAF-T (JPK CIT) obligation represents the next stage in the digitalization of tax reporting in Poland. The new regulations introduce an obligation to annually report accounting and tax data in XML format – without a prior request from the tax authority. In practice, this means a shift from an "on-demand reporting" model to a continuous, structured financial data reporting framework.
New Deadline & Who's Affected
The latest regulations extend the reporting deadline from 31 March to 31 July 2026 for taxpayers whose financial year corresponds to the calendar year. The first group includes entities with the highest revenues. For these taxpayers, the obligation applies to periods beginning after 31 December 2024, with their first reports due in 2026. This includes large companies, tax capital groups, and CIT taxpayers obliged to submit JPK_VAT (VAT declarations).
What You Need to Do Now
The extended JPK CIT reporting deadline may prove beneficial for businesses, but only if the additional time is used wisely. It offers a valuable opportunity to plan the necessary work, organize data, and adjust systems without time pressure. The better this period is utilized, the lower the risk of errors, corrections, and complications during the first mandatory JPK CIT submission.
Key steps include: reviewing your chart of accounts for tax mappings, testing your accounting software to ensure it generates the required XML files (JPK_KR_PD for accounting books and JPK_ST_KR for fixed assets), and checking data consistency between your accounting records, CIT-8 tax return, and financial statements.
Practical Impact for Foreigners and Self-Employed
If you operate a business in Poland as an entrepreneur (JDG) or own a limited liability company (Sp. z o.o.), the JPK CIT obligation will eventually apply to you, though the timeline depends on your revenue. Large businesses must file by July 31, 2026; smaller businesses will have additional time in 2027 or 2028. Even if you're not required to file this year, beginning preparations now—especially system updates and account mapping—will prevent costly last-minute corrections. Consult your accountant or tax advisor to confirm your filing group and begin testing your system's readiness.
Sources
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