Legally mitigate your tax liabilities, obtain second residency and citizenship, and build a diversified portfolio of foreign investments so you can optimize your finances and live your best expat life.
Maximize Tax Savings
Avoid Costly Errors
Ensure Compliance
Foreign Tax Integration
16+
years in business
and counting
100K+
tax savings
in 2023 alone
600+
U.S. Expat clients
around the globe
14K+
exclusive expat
community members
This is the game we play, and we’re good at it!
Never miss a tax deadline, a business opportunity, or a family vacation, and be a part of a bigger mission through working with us. We can help you with:
Taxes
Expert tax filing and planning to optimize your financials and ensure compliance.
Citizenship
Personalized guidance and support for a smooth citizenship acquisition process.
Residency
Seamless residency acquisition with end-to-end assistance and support.
Asset Mgt
Strategic management of your assets to align with your financial goals.
Banking
Custom banking solutions for sophisticated financial management.
Business
Comprehensive business services from formation to financial strategy.
Investment
Tailored investment strategies to maximize your financial potential.
Consultancy
Personalized advisory services to navigate complex financial landscapes.
We take the stress out of your expat business. Our clients turn to us for:

IRS SOS
Tax Dispute Resolution
IRS Negotiation and Settlement
Tax Law Compliance Consultation

Mertz International Limited
Tax Planning and Preparation
International Company Formation
Cross-border Taxation Advisory

Mertz Investment House Ltd.
Personalized Investment Planning
Corporate Investment Solutions
Market Analysis and Insights
Complete our
Intake Form
This step helps us understand your financial situation, so we can personalize our consultation to your needs.
Book your Consultation
Book a consultation that fits your schedule, so we can have a productive conversation and focus on your unique situation.
Consult with our Tax Expert
We’ll assess your unique tax scenario and develop a customized solution for handling your tax obligations.
Welcome
Aboard!
Have peace of mind knowing our team is expertly handling your taxes and optimizing your financial health.
Playing the game of expat taxes like a real MVP!

Mike Mertz, CPA, eMBA
Mertz International Limited’s (MIL) Founder and CEO, Michael A. Mertz, has been an expat for 26+ years and currently living between Thailand and Panama.
He is a highly experienced Certified Public Accountant (CPA) with a solid corporate background in leading accounting firms such as Ernst & Young and PwC, 16-year specialization in expat tax, and 26+ years of experience living abroad in over 15 countries.
Mike is a tax avoidance specialist known for his expertise in U.S. overseas taxpayer and finance laws and profienciency in navigating diverse tax and business regulations throughout Asia, Russia, and Europe.
Here's what our expat clients have to say:
Get expert insights on navigating taxes, life, and business as an expat – delivered straight to your inbox!
10 Tax Secrets Expats Should Know Before Moving
We've compiled our best tax tips into an 18-page document to help you achieve a more financially savvy expat life. Grab your copy!