Welcome to Fastaxx LLC
At Fastaxx LLC, we bring over 20 years of tax expertise, led by a former Deloitte tax leader, serving individual taxpayers, expats, and sole proprietors with premium, personalized solutions. Whether you're based in the U.S., self-employed, or recently relocated from abroad, we simplify the complexities of tax compliance so you don’t have to.
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About us
Welcome to Fastaxx — Where Expertise Meets Personal Service
Fastaxx is a professional tax preparation and advisory service built on over two decades of experience in domestic and international tax. Founded and led by a former Deloitte tax leader, Fastaxx brings Big Four expertise to individuals, expats, and sole proprietors who need more than just basic filing—they need a trusted partner. We’ve supported Fortune 500 clients across 60+ countries with tax strategy, compliance, and payroll solutions; now, we apply that same depth of knowledge to every individual, expatriate, and self-employed business owner we serve.
At Fastaxx, we blend personalized service with deep technical know-how, leveraging advanced tax software to deliver accurate, audit-ready filings. Whether you’re navigating multi-state income, managing foreign assets as an expat, or organizing your sole proprietorship’s finances, we simplify the complex—so you can remain compliant, minimize liability, and focus on what matters most.