American International Tax Advisors
Asia's Best U.S. Tax Firm
Professional U.S. tax filing, international tax planning and cross-border compliance for American expats and businesses throughout Asia, Australia and the U.S. Headquartered in Hong Kong. Listed by the U.S. Embassy Bangkok.
We look at your whole financial picture, plan around your specific residency and treaty position, and handle both today's filing and the strategy behind it. Precisely.
What clients leave with
For individuals
Compare the Foreign Earned Income Exclusion against the Foreign Tax Credit and get the right call at the $120k+ income threshold.
For businesses
Comparing entity options for tax efficiency in 2026: the hidden compliance traps and why DIY entity selection backfires.
Compliance
FinCEN Form 114 and Form 8938 penalties explained, plus the Streamlined Filing amnesty programs for catching up.
Strategy
Form 8833 treaty positions, pension and government-service exemptions, and how to claim $20,000+ in annual treaty savings.
Corporate
Section 962 elections, Form 5471 compliance, and structuring foreign corporations to avoid double taxation.
Whichever of these describes you, we've built the filing and planning approach for it already.
Most firms are either strong on U.S. federal law or present in Asia. Very few are genuinely both. AI Tax Advisers has spent over 15 years building the rarest combination in this industry.
Book a free consult
A 30-minute call with an AI Tax Advisers advisor. We review your situation, identify risks and opportunities, and give you a clear picture of what needs to happen.
Your advisor maps your full picture: treaty positions, exclusion elections, FBAR obligations, entity structure. A complete plan, no surprises.
We handle the filings and you get confirmation when everything is submitted and accepted. Peace of mind, not paperwork anxiety.
Lead Tax Advisor, American International Tax Advisers
Thomas has spent over 15 years building AI Tax Advisers into Asia's leading U.S. tax firm, headquartered in Hong Kong with advisors across twelve-plus offices from Bangkok to Sydney to Florida.
Every engagement runs under CPA oversight, whether it's a straightforward expat return or a multi-jurisdiction corporate structure. No approximations: every position is defensible and built to withstand IRS scrutiny.
One conversation changes everything. Our job is to give you a clear, honest picture of your U.S. tax position, wherever in Asia you're based.
“I am a U.S. citizen currently residing in Thailand on an OA visa. The staff at AIT did an amazing job in filing my taxes in Thailand, and they were able to save me a lot of money as well due to their expert knowledge of Thailand/United States tax law.”
T BLocal Guide · 30 Google reviews
“I have lived in Thailand for more than 25 years. 2024 was a particularly good year, because I acquired the LTR Visa and met Thomas Carden. Within the first few minutes of that initial consultation, he told me he could recover some of my overpaid taxes.”
Frank PolizzottoGoogle review
“AIT have been extremely competent, professional and supportive during a process whereby they managed to help me get a penalty abated. Thomas and his team have a high level of expertise and experience which is invaluable.”
Hami DragonGoogle review
“Thomas and Chris gave me excellent service. I got a refund when I thought I would certainly have to pay cap gains tax...the refund more than paid for their service! These guys are pros you can trust.”
Morgan LakeGoogle review
“AIT have excellent knowledge of my tax situation and helped me to navigate the confusing new tax requirement in Thailand for a foreigner. Knowledgeable, friendly, and good value service. A+”
Brian JCGoogle review
“American international tax advisors have been doing my US taxes since 2019. I will continue to use them for as long as i have to do my taxes.”
Noah KanterLocal Guide · 64 Google reviews
Our belief
One conversation changes everything. The sooner you get your position reviewed, the fewer surprises you'll face at filing time.
Missing a U.S. tax deadline carries real penalties. We track every date across every jurisdiction so you don't have to.
Form 1040, state returns, FBAR (FinCEN 114) and FATCA (Form 8938). Extensions available to October 15.
Automatic filing extension deadline for expats, and Q2 estimated tax payments for the self-employed.
Q3 estimated tax installment for self-employed expats managing U.S.-sourced income.
GILTI and Subpart F elections due for U.S. persons with foreign corporations.
If yours isn't answered here, get in touch and an advisor will talk it through.
Email an advisorFederal and state income tax returns, FBAR and FATCA compliance, Foreign Earned Income Exclusion (FEIE) optimisation, Foreign Tax Credit strategy, delinquent filing catch-up programs, and pre-move departure tax planning for Americans living and working across Asia.
Yes. We specialise in cross-border tax engineering for businesses operating between the U.S. and Asian jurisdictions: entity structuring, transfer pricing documentation, W-8BEN and W-8BEN-E filing management, Subpart F and GILTI analysis, 1042-S withholding compliance, and multi-jurisdiction tax treaty optimisation.
Yes. American International Tax Advisers is listed on the official U.S. Embassy Bangkok list of recommended tax consultants, an independent government endorsement of our expertise in U.S. expat taxation in Thailand.
Twelve-plus international offices across Asia and beyond: Hong Kong (headquarters), Bangkok, Chiang Mai, Manila, Phnom Penh, Ho Chi Minh City, Kuala Lumpur, Jakarta, Taipei, Sydney, UAE, and Florida. Real advisors in your timezone across multiple jurisdictions.
The FBAR (FinCEN Form 114) reports Foreign Bank and Financial Accounts. U.S. citizens with foreign accounts exceeding USD 10,000 in aggregate must file. We handle full FBAR compliance and can help you catch up on delinquent filings through government amnesty programs.
The FEIE allows qualifying U.S. expats to exclude foreign earned income (up to USD 120,000+ annually) from U.S. taxation. We optimise your FEIE strategy to minimise your overall tax burden while remaining fully compliant.
Yes, the U.S. taxes citizens on worldwide income regardless of residence. However, treaties, exclusions and foreign tax credits can substantially reduce or eliminate liability. Our advisors navigate both U.S. and Thai tax law to optimise your position.
Book a free 30-minute consultation with one of our advisors. We review your situation, identify risks and opportunities, and give you a clear picture of your U.S. tax obligations and strategy, with no obligation.