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US-Nordic tax guidance for your needs
Whether you're moving to the US, returning to the Nordics, or managing US tax obligations while living abroad, we provide personal support tailored to your needs. You'll work directly with a senior advisor from the first conversation onward.
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Photo by M.E. Mousa

We help you with

From annual filings to major life changes, we help you handle US–Nordic tax requirements with clear guidance and careful execution.

We help you with

Moving to the US

Understand your US filing requirements, residency, foreign assets, investments, and what to consider before and after your move.

Living in the US with Nordic income or assets

We help coordinate the US tax treatment and reporting of Nordic investments, pensions, bank accounts, property, and other income.

Americans living in the Nordics

Stay on top of your U.S. filing obligations while living abroad, including tax returns, foreign account and asset reporting, and treaty considerations.

Returning to the Nordics

We help you understand the U.S. tax implications before and after leaving the United States, including investments, retirement accounts, and ongoing filing requirements.

Foreign asset reporting (FBAR & FATCA)

Nordic bank accounts and financial assets may require US reporting even when no tax is due. We help you identify what must be reported, prepare the necessary filings (including FBAR and FATCA-related forms), and reduce the risk of costly penalties through timely, accurate compliance.

Work with us
Ann-Cristine Westerlund and Nicholas Mavrostomos of Westmusa tax and accounting services company working together in a conference room.

"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

Why Westmusa

Cross-border taxes are rarely “standard.” Westmusa specializes exclusively in US–Nordic taxation, so you get guidance built for expats, non-residents, and bi-continental individuals, not generic tax prep.

Nordic–US specialization: Deep experience with treaty considerations, foreign asset reporting, and dual-country income.

Personal, tailor-made support: We take time to understand your situation and build the right plan, no one-size-fits-all approach.

Confidence in compliance: Accurate filings and reporting (including FBAR/FATCA when needed) designed to reduce risk and avoid costly mistakes.

Truly cross-border team: Offices in NYC and Finland, with service available in English, Swedish, and Finnish.

Decades of experience: Serving Nordic individuals since the early 1990s, with steady, long-term guidance as your life changes.

Proactive, not reactive: We help you plan ahead for life changes, moves, new income, investments, and equity events, so you’re not surprised later.

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Our latest blog posts

Blog Post
Your Guide to Tax Season 2025

Key 2025 tax filing tips, deadlines, residency rules, and FBAR requirements for individuals and businesses.

Blog Post
What you need to know when expanding your business to the US

Thinking about expanding to the US? Here’s what Nordic founders need to know before making the leap.

Blog Post
U.S. Sales tax – What you need to know if you are selling into the United States!

Selling to US customers online? Learn when sales tax applies, where nexus kicks in, and how to stay compliant.

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