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Longer adjustment period for tax law changes

The bill introduces a rule that unfavorable changes to tax laws will take effect no earlier than 6 months after publication. This gives taxpayers, businesses and other entities more time to prepare for new obligations. Exceptions are only possible for important public interest or implementation of EU law.
Key points
6-month adjustment period: unfavorable tax changes will take effect at least half a year after the law is published
Greater predictability: businesses and taxpayers gain time to adjust accounting systems, financial plans and procedures
Two exceptions to the rule: shorter deadlines possible only for important public interest or EU law implementation – always with justification required
Protection against surprises: changes increasing burdens, limiting rights or altering tax rules receive special protection
The law enters into force on January 1, 2026 and does not apply to bills already submitted to Parliament
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Status:
Introduced
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Additional Information
Rządowy projekt ustawy o zmianie ustawy - Ordynacja podatkowa.
Print number: PROJEKT USTAWY 1235
Process start date: 2025-05-08
System Note: Lustra is free, publicly auditable civic infrastructure, with full source code available on GitHub. You are reading sterilized legislative data, processed by our radical neutrality engine to strip political spin and retain factual mechanics. We process only official government data. Original documents remain the authoritative source, always verify them if you can.
Summarized by: kimi-k2.5
Source data: api.sejm.gov.pl
AI work logs for this document launch
Summary & Status

Key Questions about Longer adjustment period for tax law changes

A structured overview of the legislative process, official sources, status and civic context.

What is the official ID of this bill?

The official print number for this legislation is PROJEKT USTAWY 1235.

When did the legislative process begin?

The process officially started on 2025-05-08.

What are the main provisions?

Key points include:

  • 6-month adjustment period: unfavorable tax changes will take effect at least half a year after the law is published
  • Greater predictability: businesses and taxpayers gain time to adjust accounting systems, financial plans and procedures
  • Two exceptions to the rule: shorter deadlines possible only for important public interest or EU law implementation – always with justification required
  • Protection against surprises: changes increasing burdens, limiting rights or altering tax rules receive special protection
  • The law enters into force on January 1, 2026 and does not apply to bills already submitted to Parliament

What is the specific legal status?

The current status is Introduced.

Where can I read the full text of this legislation?

The full official text is available at: View full text

What is the latest detailed status?

The latest detailed status is: I czytanie na posiedzeniu Sejmu

Is this summary verified?

Yes. This content was analyzed by AI and verified by the Lustra Judge System on 2026-09-07.

Analysis and Potential Impact of PROJEKT USTAWY 1235

We don't know, that is up to you to decide. Summarizing raw data with AI is fundamentally different from predicting socio-economic outcomes. As of 2026, we believe impact assessment strictly requires a human in the loop to verify and judge. Review our public AI processing logs for full transparency, and use Lustra to track active legislation for instant status push notifications.

CATEGORIES

Taxes Economy