

Have you moved to Spain?

Let us make your business and immigration process simple and hassle-free!
- Do you feel overwhelmed by bureaucratic procedures in Spain?
- Do you need to register with the Tax Office and Social Security but don’t know where to start?
- Are you afraid of making mistakes and facing tax or Social Security penalties?
- Do you need help understanding legal and tax technicalities?
- Need help finding the best way to bring your family to Spain?
- Would you prefer to receive advice in your native language or English?


At ATI Asesores, we offer a comprehensive accounting and immigration consultancy service designed specifically for foreigners in Spain.
Our goal is to make the entire process easy and hassle-free for you.
You are not alone
Meet the leadership team

OLESEA SIRCU
Holds a University Degree in Political Sciences and specialist of International Law from the University of Padua (Italy). She was a researcher for one year, in 2005, at the Department of Administration and Public Politics of the University of Padua. Her research work focused on “Deslocalización of the Italian market in Romania”. She was employed in 2007 as a volunteer in the project “Storie Straordinarie“, undertaken by the Town hall of Venice. In 2010, she studied for a Master’s Degree in Immigration Management at University Pompeu Fabra, Barcelona, where she began her career and development with special interest in Immigration issues. Until now, she plays the role of Immigrants Consultant and is currently the President of the Technical Association on Immigration.

AGNIESZKA SLIWINSKA
Holds a University Degree in International Relations (specialization: American Politics) at Jaguellonica University (Krakow, Poland) and a Masters Degree in Migration Management at Universitat Pompey Fabra (Barcelona). She has collaborated with several entities of the various sectors, both in Poland and in Spain (Barcelona). At present she is employed in the field of projects and investigation at the Associacion Technicos en Inmigracion and collaborates also in the area of immigrants consultancy.
What do we offer?
Business Registration
We guide you through the registration process with the Tax Office and Social Security, ensuring that you meet all legal requirements.
Tax Obligations
We help you understand and manage your tax obligations, avoiding penalties and legal issues.
Social Security
Complete advice to keep you updated with Social Security so you can access all available benefits.
Tax Management
We simplify tax filing, invoice creation, and financial management.
Immigration Consultancy
We assist you in obtaining and maintaining work and residence permits, as well as in the process of bringing your family to Spain.
Our Satisfied Clients Speak for Us
My deepest gratitude to ATI Asesores for the support and guidance they have provided me so far. They are very professional, highly knowledgeable in their field, trustworthy, and incredibly supportive. Excellent quality, good value for money, professional, and very responsive. I highly recommend them.
I spoke to ATI Asesores when I had an issue with my NIE, and they were very helpful and knowledgeable. Also, the prices are very reasonable compared to other big-name immigration firms in Barcelona.
ATI Asesores is the firm I always trust for handling immigration and legal issues! They are highly professional, skilled, and have vast knowledge and experience.
How Does It Work?
Why Choose Us?
1. Initial Consultation: Book an initial consultation.
2. Personalized Evaluation: We analyze your situation and provide a detailed plan for your accounting and immigration needs.
3. Complete Management: We handle all necessary paperwork, from registering with the Tax Office to obtaining residence permits.
4. Ongoing Support: We offer continuous support for any additional queries or management you may need.
Why Choose Us?
- Experience and Reliability: With years of experience helping foreigners in Spain, we are your trusted partner.
- Multilingual Service: We offer advice in Spanish, English, Polish, and Italian.
- Personalized Attention: Every client is unique, and we tailor our services to your specific needs.
- Ease and Convenience: We simplify the entire bureaucratic process, saving you time and effort.
- Transparent Fees: Accessible initial consultation and clear fees without surprises.
Don’t let the overwhelming paperwork stop your dreams.
Take the First Step Towards Your Success in Spain Today!

At ATI Asesores, we are here to make your transition as smooth as possible.
Book your initial consultation and start your path to success with expert support.
Schedule Your Consultation Now
Book your initial consultation through our online calendar and discover how we can help you and your family settle in Spain.
Aquí va el Calendly
Frequently Asked Questions (FAQs)
What does the initial €100 consultation include?
The initial consultation includes a personalized assessment of your accounting and immigration needs.
Do you offer support in my language?
Yes, we offer advice in Spanish, English, Italian, and Polish.
Can I bring my family to Spain if I don't have permanent residency yet?
Yes, there are options to bring your family even if you don’t have permanent residency. Our team can advise you on the different options available depending on your particular situation.
Can you help me if I have an established business outside Spain and want to open a branch here?
Yes, we provide consultancy for foreign companies that want to set up a branch or subsidiary in Spain. We’ll guide you through all the steps, from legal registration to tax and employment management.
What are the benefits of hiring your services instead of doing it myself?
Hiring our services saves you time, ensures everything is done correctly from the start, and gives you peace of mind knowing that experienced professionals are managing everything for you, avoiding mistakes that could lead to penalties.
What if I have questions after the initial consultation?
We are always available to clarify any additional questions you may have after your consultation. We offer continuous support to our clients, ensuring you always have access to the information you need.
What happens if I can’t attend the consultation on the scheduled date?
You can modify or cancel your appointment up to 24 hours before the consultation at no additional cost. If you need to reschedule, we will help you find a new date that fits your schedule.