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Professional Accounting Services in Poland for International Companies
Choose the services of a professional accountant in Poland
SIIAMI is a modern accounting firm based in Gdańsk, providing comprehensive accounting services across Poland for international companies, startups, e-commerce businesses, and growing enterprises.
We support clients with full accounting and tax compliance, payroll, HR administration, and financial reporting in accordance with Polish regulations, including the Accounting Act and requirements of the Polish tax authorities.
Our goal is to help foreign and local businesses operate smoothly in Poland through reliable accounting outsourcing, modern digital tools, and clear communication in English.
Our Reviews
Mykola Mylinskyi
6 months ago
They work efficiently. We registered JDG with their help, and manager Pavel's answers were straightforward and to the point. They saved us a ton of time on bureaucracy. We'll continue working with them. I highly recommend them!
Kirill Sakun
6 months ago
Always available (during business hours).
Every request receives a clear, understandable answer, often with a video guide.
Payments, receipts, and other documents are double-checked, making it difficult to make mistakes.
LucasCrupa
6 months ago
I recommend
Ivan Barysiuk
6 months ago
I've been working with SIIAMI for over three years now. I sincerely and publicly thank them for their consistently excellent work! A special thanks to the amazing Anastasia Kiyko, who always delves deeply into tasks and requests and always responds to them in an accessible, detailed, and prompt manner.
Vasil Vabi
6 months ago
Chciałbym wyrazić szczerą wdzięczność dla firmy prawno-rachunkowej SIIAMI (Gdańsk) za wysoki profesjonalizm, rzetelność oraz kompleksowe wsparcie biznesowe.
All rights reserved. Szczególnie cenię dostępność zespołu oraz gotowość do udzielania praktycznych porad i znajdowania skutecznych rozwiązań nawet w bardziej złożonych sytuacjach.
Szczególne podziękowania kieruję do:
* Olgi Silivonczik - za profesjonalne podejście, zaangażowanie i odpowiedzialność;
* Julii Kovickiej (kadry) - za sprawną i terminową obsługę spraw kadrowych;
* właścicielki firmy, Anastazji Jeremicz - za wysoki poziom organizacji, indywidualne podejście do klienta oraz stworzenie silnego i profesjonalnego zespołu.
SIIAMI to godny zaufania partner dla firm, które oczekują wysokiej jakości obsługi księgowej, kadrowej i prawnej w Polsce.
Z pełnym przekonaniem rekomenduję tę firmę jako kompetentnego i profesjonalnego partnera biznesowego. (B-Stars Sp. z o.o., Warsaw, Poland) **************************************************************************************************** I would like to express my sincere gratitude to SIIAMI (Gdańsk), head of the Prawno-Rachunkowa branch, for their high level of professionalism, reliability, and high-quality business support.
Cooperation with the company has left an exceptionally positive impression – all issues are resolved promptly, competently, and with attention to detail. It is especially important that the team is always available for consultations and helps find practical solutions even in difficult situations.
Special thanks to:
* Olga Silivonchik – for her professional approach, attentiveness, and responsible handling of issues;
* Yulia Kovitskaya (HR) – for her clear and timely work on HR issues;
* Company Director Anastasia Eremich – for her high level of organization, customer focus, and building a strong professional team. SIIAMI is a reliable partner for companies seeking high-quality accounting, HR, and legal support in Poland.
I confidently recommend this firm as a competent and professional partner. _______ B-Stars Sp. z o.o. (Warsaw, Poland) _______
Aleksandr Sacek
9 months ago
Bohdan Vorobel
11 months ago
I used SIIAMI’s services for two years, during which the price of their service doubled. If you work in the IT sector and issue one invoice per month, the cost they charge is very questionable, especially considering that there are automated systems that do the same thing for about 50 PLN per month.
In February 2025, I ended my cooperation with them and closed my business activity. However, I needed to reopen it in December and decided not to return to SIIAMI. I wanted to explore other accounting firms or even switch to an automated system, where my historical data from the previous period was already stored.
Here is what’s important to understand if you consider working with them: if you ever want access to the data stored in the accounting system they use, you will not receive it. Your entire history will simply be emailed to you as a collection of PDF files. Nothing more.
On top of that, I currently cannot access my own account within the accounting software, even though it is tied to my email. I receive a message stating that my account is controlled by another person (a SIIAMI accountant). When I contacted them about this, they told me to reach out to the software provider myself, as they claim it is not their responsibility.
Overall, this is the most customer-unfriendly business I have personally dealt with, and I cannot say anything positive about my experience with them.
Alex
12 months ago
Evgenii Shkoda
12 months ago
Eugene Pipe
1 year ago
I would like to express my sincere gratitude to manager Mikhailava Elena and accountant Svietlytska Olha for their awesome support. They helped me resolve an issue with my yearly declaration after my previous accountant had made the mistakes. Their assistance was invaluable for me.
They not only corrected my yearly declaration but also took the time to explain in detail why the mistake happened and how I should proceed in the future. This gave me full clarity and confidence in the process.
Thanks to their expertise and careful approach, I now feel reassured and can finally sleep peacefully, knowing everything is in order. I am deeply thankful to have found such reliable and skilled professionals.
Response from the owner
Hello!
Thank you very much for your kind and detailed review.
We are glad that Elena and Olga's work helped you resolve the situation with your annual tax return and brought you peace of mind. Your trust is very important to us, and we sincerely appreciate your recognition of our team's professionalism and dedication.
Sincerely,
The SIIAMI Team12 months ago
Lion 24
1 year ago
Response from the owner
Добрый день!
Благодарим вас за высокую оценку! Нам приятно знать, что вы остались довольны нашим сервисом. Ваше доверие — лучшая мотивация для всей команды SIIAMI.
С уважением,
Команда SIIAMI12 months ago
Siarhei Luskanau
1 year ago
I worked with Siiami from 2022 to 2023, and they provided excellent support throughout my successful residence permit application. I'm very satisfied with the quality of their work—Lena and Alesia were always responsive and helpful, promptly answering any questions I had and staying in constant communication.
Alexey Sokolov
2 years ago
I have been interacting with this team for over a year. They help me with accounting - assistants respond to requests within acceptable timeframes, the documents are in order at the moment, the tax office has not bothered me. At the very beginning of the process, they helped me register a company. It was not free - 400 zlotys, but a discount on accounting services was immediately provided. So it turned out adequate. Then I bought a legalization package for individual entrepreneurs. I have an unfavorable passport, but we collected all the documents from a large list for an additional fee, they made a business plan for me and I successfully received a residence permit for 3 years. The term for obtaining a residence permit was 1 year, all delays in considering my residence permit were due to the state, and not because of the assistants. Thus, I recommend the company for cooperation. Thanks to Olesya and Oksana for working on my needs.
Влад Русакевич
2 years ago
Rodion Nikolaiev
2 years ago
I can recommend SIIAMI for cooperation to entrepreneurs and those who want to properly manage their accounting. Also, thanks to the company for helping with all the documents, their detailed step-by-step guides are very useful, and the managers will always help you understand any issue.
I would like to separately highlight my personal manager Inna. She is an excellent professional, always in touch and ready to help. Thank you very much for your support and answers to all my questions.
We are recommended
Modern accounting Services in Poland for Businesses
We provide complete bookkeeping and financial management tailored to different types of companies, including:
Limited liability companies (Sp. z o.o.)
International businesses
E-commerce companies
HR and recruitment agencies
Small and medium-sized enterprises
What services do we offer
Our accounting Outsourcing Services include:
- Full bookkeeping services and accounting records
- VAT settlements and VAT registration support
- Tax services and compliance support
- Financial reporting
- Payroll support
- Human resources administration
- Representation before Polish tax authorities
- Consulting services
- Audit services
HR and Payroll Services
- Payroll calculations
- Employment documentation
- Human Resources administration
- Social insurance (ZUS) settlements
- Employee records management
- Support for employment contracts
- Payroll compliance services
- legal services
Why Choose SIIAMI
Experienced accountants and tax advisors
Modern digital accounting systems
English-speaking support
Transparent communication
How We Work with business in Poland
Step 1: Initial consultation (15 minutes).
We’ll discuss your current financial situation and any challenges you’re facing.
Step 2: Customized proposal.
We’ll provide a customized service package for your business..
Step 3: Comprehensive support.
If you’re just registering your business, we’ll help you with that.
If you’re switching accountants, we’ll tell you what to ask your accountant for (and contact them ourselves if necessary).
Step 4: Peace of mind every month.
You receive clear financial reports, and we earn your trust.
Frequently Asked Questions
Do you provide accounting services for foreign business?
Yes, we specialize in supporting international businesses operating in Poland.
Can you support companies in Warsaw?
Yes, we provide our services across the whole of Poland, regardless of the city where our client’s business is located.
Do you provide payroll and Human Resources services?
Yes. Our Human Resources and payroll services include calculations, employee settlements, personnel documentation and payroll compliance support.
I don’t speak Polish. Does your accountant speak English?
Yes, both your dedicated client manager and our accounting team communicate in English.