We listen carefully at every stage, so our work can better meet your individual needs and objectives.

Victor Westerlund, Accounting Manager

Our Services

Westmusa provides best practice-based tax and accounting services for companies and individuals from the Nordic countries and beyond. Our services include preparation of corporate and personal tax returns that are fully compliant with US tax laws and minimize your tax bill. Every accounting and tax situation is different. That’s why every Westmusa service package is customized.

The first and most important thing we do is listen. From there we develop the customized service package just right for you.

Ann-Christine Westerlund, President


Nordic companies and organizations expanding to the US.

Nordic individuals in or moving to the US, with income and assets in Nordic countries.

US expats living in Nordic countries.

Expats from other countries (Canada, UK, etc.) living in the US

For individuals

For Businesses

Rely on Westmusa to…

  • prepare a fully compliant US tax return.
  • file for extension if needed.
  • understand the tax systems in the Nordic countries and how to apply the tax treaties to avoid double taxation.
  • understand social security agreements, expatriate, green card, and dual citizenship tax issues.
  • advise on stock option taxation.
  • advise on expatriation taxation when permanently moving from the US.
  • advise on taxation when moving to the US
  • take care of filing your FBAR and FinCen form 114 (Report of Foreign Bank and Financial Accounts).
  • understand the special tax rules that apply to foreign owned companies, and the special forms to be filled out to avoid very high penalties.
  • work on the platform that suits you best. (OneDrive, Dropbox or Google Drive)
  • provide representation to US tax authorities as necessary, as well as follow-up correspondence and audit support.

Rely on Westmusa to…

  • prepare a fully compliant US tax return. (State & Federal)
  • file for extension if needed.
  • help you establish a business in the US, including tax structure and tax registrations.
  • do monthly/quarterly or annual accounting based on your needs
  • prepare financial statements according to US regulations.
  • handle payroll & all payroll related tax complications.
  • assist you with sales tax questions & concerns
  • file your company’s sales tax returns
  • provide tax advise & consultation.
  • provide representation to US tax authorities as necessary, as well as follow-up correspondence and audit support.
  • tailor-make a service agreement so all your needs are met.

Contact Us

If you have any questions or concerns.

Do not hesitate to contact us at Westmusa, Inc.

Our Clients

Westmusa is a reliable and experienced partner in the U.S. market. We value the firm’s willingness to tailor a service package that fits us and will grow with us.

Kristiina Helenius, Director, North America, Nordic West Office

I am very grateful for the service and help from Westmusa, Inc, which made my years in New York much easier both in terms of tax issues and good advice in other areas. The service was always fast, friendly and correct, and I highly recommend Westmusa, Inc.

Peter Fellman, Editor In Chief, Dagens Industri

As an individual tax advisory customer for already 10 years, I can highly recommend the services of Westmusa in international tax matters.

Maarit Bystedt, Director, Corporate Communications, Nasdaq Helsinki

Professional, proactive, friendly service. Always pleased with the results.

Olli Herrala, Journalist, Finnish Business Daily

A diminutive and modest powerhouse of a networker and professional. It seemed that she knew everyone and still does, of the Nordic community in the USA.

Katarina Holm-DiDio, Principal & Coach, KHD Consulting

Thanks again for the excellent service! This was a fast and smooth process.

Jussi Lemilainen, Operator Business Segment Lead,
Wireless Devices & Operators, Keysight Technologies, Inc

Westmusa has prepared my taxes for the last couple of years and the partnership has been amazing – their expertise, attentiveness, and service are exceptional and I’m looking forward to many more years of partnership

Lina Hagström, Head of Brand Marketing, Smartley