Grants and Tax Reliefs for New Businesses in 2026 — What's Worth Using
Starting a business in 2026? Check what grants, tax reliefs, and ZUS preferences are available for new entrepreneurs.
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News
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The most important changes in regulations, tax tips and news from our office.
14
APR 2026
Podatki
14
APR 2026
JPK
JPK_CIT from 2026 — Who's Affected and How to Prepare for New Reporting
JPK_CIT is a new electronic tax reporting obligation. Check who it affects in 2026 and what data must be submitted.
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14
APR 2026
PIT
Last Days to File PIT for 2025 — Don't Forget These Things
Two weeks left until the April 30 deadline. Here's what you shouldn't forget when filing your PIT return for 2025.
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14
APR 2026
ZUS
Health Insurance Contribution 2026 — What Changes for Entrepreneurs
New health insurance contribution rules for entrepreneurs take effect in 2026. Check how much you'll pay and what your options are.
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14
APR 2026
KSeF
KSeF — Most Common Invoice Errors and How to Correct Them
Two weeks into mandatory KSeF, recurring invoice errors have emerged. We show how to identify and properly correct them in the system.
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07
APR 2026
Prawo
Labour Law Changes 2026 — New Employer Obligations and Employee Rights
2026 brings further labour law changes — from remote work regulations to new documentation requirements. Check what employers need to know.
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07
APR 2026
VAT
VAT from April 2026 — New Rates, Obligations, and Simplifications
April 2026 brings significant VAT changes — from new rates to simplified reporting. Check what's changing and how it affects your business.
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07
APR 2026
PIT
PIT for 2025 — Key Changes in Tax Forms and Filing Deadlines
The 2025 PIT filing season is underway. Check the key changes in forms and deadlines, and what to watch out for this year.
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07
APR 2026
KSeF
KSeF — First Month of Mandatory Use: Practical Takeaways and Common Issues
One month into mandatory KSeF — we summarize the most common issues businesses face and offer practical solutions.
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01
APR 2026
KSeF
KSeF Mandatory from April 1, 2026 — What You Need to Know
From today, the National e-Invoice System (KSeF) is mandatory for all active VAT taxpayers in Poland. Learn what changes and how to prepare.
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31
MAR 2026
PIT
PIT Tax Return for 2025 — Key Deadlines and Changes in 2026
The deadline for the 2025 PIT tax return is approaching. Check key deadlines, new deductions and changes that may affect your tax refund.
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28
MAR 2026
PIT
PIT tax deductions for 2025 -- which ones you can claim
A comprehensive overview of the most important tax deductions available in your 2025 PIT return. Child tax credit, internet deduction, rehabilitation relief, IKZE, charitable donations, thermal modernization, and more.
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28
MAR 2026
PIT
Filing your 2025 PIT return -- guide for employees and entrepreneurs
The deadline for filing your 2025 PIT return is April 30, 2026. Find out which form you need, what documents to prepare, and which deductions you can claim. A practical guide for employees and entrepreneurs.
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28
MAR 2026
JPK
Most common JPK filing errors -- how to avoid them
The Standard Audit File (JPK) is mandatory for every VAT taxpayer in Poland. JPK errors can lead to tax office inquiries and fines up to PLN 2,800. Learn about the 8 most common errors and how to avoid them.
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28
MAR 2026
Podatki
Tax calendar 2026 -- key deadlines for entrepreneurs
A complete 2026 tax calendar with key deadlines for entrepreneurs. Filing dates for PIT, CIT, VAT, JPK, ZUS, and more. Never miss a deadline again.
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28
MAR 2026
Podatki
Sole proprietorship vs LLC in Poland - which to choose in 2026
A comparison of sole proprietorship (JDG) and limited liability company (sp. z o.o.) in Poland - differences in taxes, social insurance, liability, and operating costs in 2026.
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28
MAR 2026
Prawo
How to start a business in Poland in 2026 - step by step guide
A practical guide to starting a business in Poland in 2026 - from CEIDG registration, through ZUS and VAT, to choosing an accounting firm.
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28
MAR 2026
Podatki
How much does accounting cost in Poland in 2026 - pricing guide
An overview of accounting service prices in Poland in 2026 - from simplified bookkeeping to full accounting. How much does an accounting firm cost and what affects the price?
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26
MAR 2026
JPK
JPK CIT from 2026 — who is affected and how to prepare
From January 1, 2026, JPK CIT reporting obligations have been extended to most CIT taxpayers. The first reporting deadline has been moved from March to July 2026. Check if your business is affected by the new rules.
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24
MAR 2026
Podatki
President vetoes alcohol excise and sugar tax hike — what it means in 2026
President Karol Nawrocki vetoed two tax bills that would have raised alcohol excise by 15% and increased the sugar levy. The decision has significant consequences for the state budget and consumers' wallets.
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24
MAR 2026
JPK
JPK_V7M and JPK_V7K schemas — current versions, XSD links and documentation
New JPK_V7M(3) and JPK_V7K(3) schemas have been in effect since 1 February 2026. We compiled current links to XSD files, example XMLs and the official documentation describing all structure elements.
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21
MAR 2026
KSeF
Mandatory KSeF from April 1, 2026 — what entrepreneurs need to know
From April 1, 2026, Poland's National e-Invoice System (KSeF) becomes mandatory for most VAT taxpayers. Learn who is affected, what exceptions apply, and how to prepare.
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14
MAR 2026
KSeF
KSeF from 1 April 2026 — last call for smaller businesses
In just a few weeks, KSeF becomes mandatory for all active VAT taxpayers. Check what you need to prepare, exceptions, and how to avoid penalties.
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14
MAR 2026
Podatki
New passenger car depreciation limits from 2026
From 1 January 2026, new three-tier car depreciation limits apply. The limit for combustion engine cars dropped from PLN 150k to 100k.
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12
MAR 2026
Podatki
Flat-rate tax rates 2026 — full PKD table and new health insurance
Complete overview of all 10 flat-rate tax brackets for 2026 with PKD code mapping and updated health insurance contributions.
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10
MAR 2026
KSeF
LinTax builds its own KSeF client — why we chose a custom solution
We are intensively working on our own KSeF client implementation. We explain why we chose a custom solution and what benefits it will bring to our clients.
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24
FEB 2026
KSeF
KSeF — first days of the mandate. System launch summary
Mandatory KSeF has been live since 1 February. We summarize first experiences, common issues and our recommendations.
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17
FEB 2026
PIT / CIT
PIT for 2025 — new forms and filing deadlines
The PIT filing season for 2025 has started. Check new forms, deadlines and key changes.
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10
FEB 2026
KSeF
Mandatory KSeF from February 2026 — what you need to know
The National e-Invoice System becomes mandatory. We present the implementation timeline, technical requirements and practical tips for entrepreneurs.
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08
JAN 2026
PIT / CIT
PIT and CIT changes for 2026
The new tax year brings significant income tax changes. Check what's changing in thresholds, reliefs and rates.
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18
DEC 2025
VAT
New VAT limits and exemptions from 2026
From the new year, VAT exemption thresholds and intra-Community transaction rules are changing.
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15
OCT 2025
KSeF
KSeF — another postponement of the implementation deadline
The Ministry of Finance announced a new mandatory KSeF implementation timeline. Check the current dates and what it means for your business.
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22
AUG 2025
JPK
JPK_CIT — new reporting obligation from 2025
From 2025, CIT taxpayers must submit new JPK structures. We explain the data scope and deadlines.
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05
JUN 2025
VAT
SLIM VAT 4 — simplifications in VAT settlements
Another VAT simplification package comes into effect. We discuss the key changes making life easier for entrepreneurs.
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12
MAR 2025
PIT / CIT
Cash-basis PIT for small businesses from 2025
A new PIT settlement method allows small businesses to pay tax only after receiving payment. Check the conditions.
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20
JAN 2025
PIT / CIT
Global minimum tax 15% (Pillar 2) — what it means for Polish companies
Poland implements the EU directive on global minimum tax. We explain who it affects and its consequences.
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08
NOV 2024
KSeF
KSeF — testing and pilot. How to prepare?
The Ministry of Finance has launched the KSeF 2.0 test environment. We advise how to effectively test integration.
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18
SEP 2024
ZUS
Health insurance contribution changes for entrepreneurs
From 2025, the health insurance contribution calculation method changes for flat-tax and lump-sum taxpayers.
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22
JUL 2024
Prawo
Mandatory e-Delivery from 2025
The e-Delivery system becomes mandatory. We explain who must have an electronic delivery address and when.
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10
JUN 2024
KSeF
KSeF postponed — new deadline is 2026
The Minister of Finance officially confirmed the postponement of mandatory KSeF. We present the details.
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20
MAY 2024
PIT / CIT
New mileage rates from May 2024
The Ministry of Infrastructure raised the rates per 1 km for private vehicles used for business purposes.
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28
MAR 2024
Podatki
Tax year 2024 — key changes and deadlines
Summary of the most important tax changes effective from 2024 and a calendar of key deadlines.
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22
JAN 2024
KSeF
KSeF — Minister of Finance halts mandatory e-invoices
In January 2024, the Minister of Finance announced a halt to mandatory KSeF planned for July 2024.
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11
DEC 2023
PIT / CIT
New transfer pricing reporting rules from 2024
Transfer pricing documentation obligations are changing. New thresholds, deadlines and reporting scope.
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20
NOV 2023
Prawo
Mandatory integration of cash registers with payment terminals
From 2025, cash registers must be integrated with payment terminals. We explain the new obligations.
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05
OCT 2023
KSeF
Mandatory KSeF from July 2024 — implementation timeline
The National e-Invoice System will become mandatory from 1 July 2024. We present an action plan for businesses.
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10
JUL 2023
VAT
SLIM VAT 3 takes effect — overview of simplifications
The SLIM VAT 3 package has been in effect since 1 July 2023. We discuss the key VAT simplifications.
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15
JUN 2023
JPK
JPK_VAT — structural changes from July 2023
A new version of the JPK_VAT structure introduces additional fields and codes. Check what changes in reporting.
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18
APR 2023
PIT / CIT
Estonian CIT growing in popularity — summary
The lump-sum tax on company income (Estonian CIT) is growing in popularity. We discuss rules, benefits and pitfalls.
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14
FEB 2023
PIT / CIT
Minimum CIT — suspension and changes
The minimum corporate income tax was suspended until end of 2024. Check the new rules from 2025.
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14
NOV 2022
VAT
VAT group — new option from 2023
From January 2023, related entities can form VAT groups. We explain the rules and benefits.
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05
SEP 2022
Prawo
Mandatory acceptance of cashless payments
From 2022, entrepreneurs using cash registers must accept cashless payments.
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05
JUL 2022
PIT / CIT
Polish Deal 2.0 — changes from July 2022
The government fixes the Polish Deal. From July 2022: lower PIT rate, elimination of middle-class relief and other corrections.
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11
APR 2022
PIT / CIT
Transfer pricing — Polish Deal changes
The Polish Deal introduces significant transfer pricing documentation changes. New thresholds, deadlines and obligations.
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02
FEB 2022
VAT
Anti-inflation shield — VAT reduction on fuel and food
The government introduces an anti-inflation shield with reduced VAT rates. Check which products are covered.
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10
JAN 2022
KSeF
KSeF — voluntary start from January 2022
The National e-Invoice System has launched voluntarily. We explain how it works and why it's worth starting early.
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15
DEC 2021
PIT / CIT
Polish Deal — tax revolution from 2022
From January 2022, the Polish Deal takes effect — the biggest tax reform in years. We discuss key changes.
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08
NOV 2021
PIT / CIT
Withholding tax (WHT) changes from 2022
New withholding tax collection rules take effect. We discuss the pay and refund mechanism and payer obligations.
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04
OCT 2021
VAT
SLIM VAT 2 — further VAT simplifications
The second VAT simplification package takes effect from October 2021. An overview of the most important changes.
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16
AUG 2021
Prawo
Online cash registers — mandatory for more industries
More industries must replace cash registers with online ones. Check the timeline and obligations.
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21
JUN 2021
KSeF
KSeF — announcement of the e-invoice system in Poland
The Ministry of Finance announces the National e-Invoice System. We explain the concept and planned timeline.
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15
MAR 2021
JPK
JPK_VAT with declaration — mandatory for all
The new JPK_VAT replaces the previous VAT-7 declaration. We discuss the structure and common mistakes.
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11
JAN 2021
VAT
SLIM VAT 1 — simplification package from 2021
The first SLIM VAT package introduces simplifications in invoicing, corrections and VAT settlements.
Learn more →