U.S. Tax Services for Global People
35+ years helping Americans abroad, inpats, and globally mobile individuals
U.S. TaxServices for
Global People
35+ years helping
Americans abroad,
inpats, and
globally mobile
individuals
PROFESSIONAL CREDENTIALS, AFFILIATION AND EDUCATION
Lynn Dempsey Boster brings more than three decades of experience to U.S. tax work, but her real qualification runs deeper than a résumé. She’s lived it — on U.S. Navy and Army bases, inside a U.S. Embassy compound, and out in the local economy in Tokyo and Seoul, alongside stretches on both American coasts. She raised a family and built a career with the Big Four firms in San Francisco, Tokyo, Seoul and San Diego before launching her own CPA practice, and that global, ground-level experience shapes how she works with clients today. Lynn understands, firsthand, what it feels like to manage U.S. tax obligations from thousands of miles away — juggling time zones, currencies, and reporting requirements most preparers have only read about. She works with individuals, entrepreneurs, and small business owners to bring order to that complexity, so U.S. taxes stop feeling like an obstacle and start feeling manageable, wherever life takes you next.
U.S. tax compliance isn’t something that happens to you — it’s something you actively participate in, and that collaboration is the foundation of how Lynn works. She helps you prepare annual U.S. tax returns, whether you’re filing on time or catching up on past years, along with any state returns your situation requires. When IRS or state notices arrive, she helps you respond and resolve them before they snowball. For clients with foreign accounts, she navigates the complex FBAR and FATCA reporting rules that trip up even careful filers. And for bigger life decisions — expatriation, closing out a loved one’s final return, or simply figuring out your next financial move — she offers consulting and strategic advice grounded in real experience, not guesswork. From routine filings to complicated transitions, the goal stays the same: clear answers, steady guidance, and one less thing standing between you and the life you’re building.