Legal Notice (Imprint)
Website Owner & Service Provider
Simplex Tax is operated by:
Yosyf Ivanyuk Jednoosobowa Działalność Gospodarcza
Registered in the Central Register and Information on Economic Activity (CEIDG) of Poland.
Entrepreneur’s company name: Yosyf Ivanyuk
NIP (Tax Identification Number): 5273139969
REGON: 540232672
Business commencement date: 02 December 2024
Status: Active
Registered Address (Postal Address)
ul. Ostrobramska 101
04-041 Warsaw
Poland
Business Activity Codes (PKD)
Primary PKD: 74.99.Z – All other professional, scientific and technical activities n.e.c.
Additional PKD codes include:
– 70.20.Z Business and management consultancy
– 69.10.Z Legal activities
– 85.59.D, 85.69.Z Education services
(and others listed in the CEIDG register)
Email Address
ask.us@taxsimplex.com
Website
https://www.taxsimplex.com
Responsible Person
Yosyf Ivanyuk (business owner)
EU & GDPR Compliance Contact
Email: ask.us@taxsimplex.com
This contact is also used for GDPR-related requests.
Professional Liability
Simplex Tax provides international tax consulting services, written tax opinions, and tax structuring advice.
All information on this website is for general guidance only and does not constitute formal legal or tax advice unless a paid service agreement has been entered into.
Supervisory Authority
As a business operating in Poland, matters concerning personal data are supervised by:
President of the Personal Data Protection Office (UODO)
ul. Stawki 2
00-193 Warsaw, Poland
Copyright Notice
© 2025 Simplex Tax. All rights reserved.
All content, including text, design, graphics, and service descriptions, is the property of Simplex Tax and may not be copied or distributed without prior written permission.
Liability for External Links
This website may contain links to external third-party websites. Simplex Tax is not responsible for the content of external websites and does not endorse or guarantee their accuracy.