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4 August 2026
Agency permanent establishment of a US company in Poland – when does the risk arise?
16:23 Bydr Piotr Sekulski InCIT
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An agency permanent establishment of a US company may arise in Poland where a person acting for the US enterprise has and habitually exercises authority to conclude contracts in its name. The assessment should not, however, be limited to the wording of the relevant agreements. The actual role of the individuals operating in Poland must also be reviewed.

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15 July 2026
MAP application – how to start the mutual agreement procedure in Poland
12:15 Bydr Piotr Sekulski InCIT
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A MAP application formally starts the mutual agreement procedure between the tax authorities of two countries. In the application, the taxpayer must demonstrate that the actions of one or both countries have resulted, or may result, in taxation that is not in accordance with the applicable double taxation treaty.

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28 May 2026
MAP procedure checklist – what to prepare before submitting an application?
13:56 Bydr Piotr Sekulski InCIT
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A MAP procedure checklist is a practical list of items worth preparing before a taxpayer applies to initiate a mutual agreement procedure. In our previous post, we explained what the MAP procedure is and when it can help in cases of double taxation. This time, we focus on what should actually be checked, collected and organised before submitting the application.

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9 January 2026
MAP procedure: what to do when the same income is taxed in two countries?
21:06 Bydr Piotr Sekulski InBusiness
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Where the same income has been taxed in two countries at the same time, the taxpayer is not without remedies. Many double tax treaties (treaties on the avoidance of double taxation) provide an appropriate tool—namely the MAP procedure (Mutual Agreement Procedure), i.e., the mutual agreement procedure between tax administrations.

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21 November 2025
Form W-8BEN-E checklist – what to check?
11:19 Bydr Piotr Sekulski InBusiness
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When a US counterparty asks your company to sign a form for the IRS and will not wire your fee otherwise, it is very easy to make a mistake. To help our clients, we have prepared this Form W-8BEN-E checklist article. It walks you step by step through what to check and which documents to prepare before you send Form W-8BEN-E. Getting this right helps you avoid paying 30% tax in the US and at the same time stay safe from a Polish tax perspective.

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17 October 2024
W-8BEN-E form – why and how to complete this?
11:33 Bydr Piotr Sekulski InBusiness
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Does your company provide services or manufacture products for U.S. entities? You must submit W-8BEN-E form – otherwise, you may end up paying (high!) taxes in the U.S. More and more Polish companies provide services or produce goods for U.S. clients. After the completion of a given order, American companies ask their Polish business partners to fill out Form W-8BEN-E. What is this form for, and why is it important to fill it out correctly?

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17 October 2024
W-8BEN form – (Q&A)
10:55 Bydr Piotr Sekulski InBusiness
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Have your U.S. contractor requested you to submit W-8BEN form and you’re unsure why or how to complete it? Your concerns are completely understandable. Our clients – contractors for U.S. companies, as well as investors receiving dividends from U.S. companies – often ask for support in completing Form W-8BEN. Through this brief Q&A, we aim to address the most common questions on the subject.

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My name is Piotr Sekulski. I am a Polish tax advisor (entry no. 13740), Doctor of Law from the Jagiellonian University and founder of Outsourced.pl.

I specialize in tax advisory for the IT sector, B2B contractors, founders, technology companies and internationally mobile individuals. I advise clients on lump-sum taxation, PIT, CIT, VAT, Polish tax residency, RSU/ESOP taxation, R&D relief, IP Box, 50% tax-deductible costs and international tax matters.

I gained professional experience in tax advisory firms such as PwC, Thedy & Partners and CRIDO. I have advised on several hundred tax projects for the IT sector, new technologies and creative industries.

In response to numerous inquiries from our clients, we decided to launch a Tax Blog. We discuss current issues regarding the taxation of creative industries and the IT sector. Bearing in mind that that tax law, general law and accounting consist of hundreds of unclear and interrelated regulations, we try to organize the most important information and provide it in an accessible way.

We do not advise on the blog! This blog is supposed to be a source of information - however, each case should be approached individually. For a tax advice, please visit our website.

Agency permanent establishment of a US company in Poland – when does the risk arise?

MAP application – how to start the mutual agreement procedure in Poland

MAP procedure checklist – what to prepare before submitting an application?

MAP procedure: what to do when the same income is taxed in two countries?

Form W-8BEN-E checklist – what to check?

W-8BEN-E form – why and how to complete this?

W-8BEN form – (Q&A)

Blog Outsourced.pl

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Agency permanent establishment of a US company in Poland – when does the risk arise?

MAP application – how to start the mutual agreement procedure in Poland

MAP procedure checklist – what to prepare before submitting an application?

MAP procedure: what to do when the same income is taxed in two countries?

Form W-8BEN-E checklist – what to check?

W-8BEN-E form – why and how to complete this?

W-8BEN form – (Q&A)

Blog Outsourced.pl

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