Natalia Moskaleva and Denis Ovchinnikov

Who We Are

At USiBTS, we pride ourselves on providing unparalleled service to our clients with international exposure. Our expertise lies in guiding companies that are considering expanding their operations and creating new business entities in the United States. With years of experience in the industry, we have established ourselves as a go-to resource for businesses seeking to thrive in the global market.

Our company is based in Carlsbad, California, and we offer on-site and remote services to tackle every tax situation that may arise. We understand that navigating the complex world of tax laws and compliance can be daunting, especially for companies that are new to the US market. That's why we are dedicated to providing customized solutions that meet our clients' unique needs.

We can assist you with federal and state tax compliance, planning, and resolution. Our goal is to help you make informed decisions about your business structure and tax strategy while avoiding costly mistakes along the way. We are committed to helping our clients achieve their global dreams.

Contact us today to learn more about how we can help your business thrive in the global marketplace.

Contact us

Dennis Ovchinnikov

Company`s Co-founder CPA, Enrolled Agent

Certified with the IRS. Expert in international business taxation with over 20 years of experience.

Natalia Moskaleva

Company`s Co-founder Enrolled Agent

Certified with the IRS. With a background spanning more than two decades in tax, finance, and real estate investments.


We always welcome our clients` feedback.




We were experiencing problems with our overall tax system and was on a thin line, but fortunately, we found USiBTS, which not only swooped in to save the day but resolved it quite quickly.




USiBTS handle all my personal and firm issues. After delivering me from a nightmare of complicated tax problems, everything so far has been easy. They are fast, direct, customer-oriented, and the easiest-going company I’ve ever partnered with. Kudos!

International tax client


USiBTS is the best. Not only did they help me make sound decisions, but they also followed up with me to ensure I didn’t make any other mistakes! I highly recommend them for any tax needs and financial advice. They are too good!



I don’t know how to thank USiBTS enough. My business would have been history if they hadn’t shown up for me. In only 24 hours, they analyzed my past tax history and put together a detailed plan, even if it was short-noticed. It was unlike anything I’ve ever seen.