About Agentax
Agentax was built by a team with over a decade of international tax advisory experience to solve a problem we saw firsthand: Americans working abroad deserve better tools for tax compliance.
Our background
Agentax is backed by over 10 years of hands-on international tax advisory experience. Our founding team includes CPA-credentialed and EU-equivalent certified professionals who have advised hundreds of American expats on cross-border tax obligations across the UK, Spain, and the Netherlands.
We've seen the pain of navigating FEIE elections, foreign tax credit optimization, equity compensation reporting, and FBAR/FATCA compliance using tools that were never designed for international filers. Agentax is the product we wished existed.
Our advisory engine draws on the same expertise that informed thousands of client engagements — now codified into software that any American abroad can use with confidence.
Who we serve
Our core users are US citizens and permanent residents working at technology companies, financial institutions, and multinational firms in the UK, Spain, and the Netherlands.
We specialize in the tax complexity that comes with employee income and equity compensation abroad — RSUs, ISOs, ESPP plans, and the interplay between US and local tax obligations on vesting events, exercises, and dispositions.
Whether you're a software engineer at a London fintech, a product manager in Amsterdam, or a finance professional in Madrid — Agentax is built for your situation.
Our principles
Every calculation is built on current IRS revenue procedures, treaty provisions, and local tax authority guidance. We update our engine annually to reflect the latest thresholds, rates, and form changes.
We don't retrofit domestic tax software for international filers. Every screen, workflow, and computation is purpose-built for Americans earning income abroad.
Our advisory memos cite authoritative sources inline. Our filing engine shows you exactly how every number is calculated — no black boxes.
All Agentax filings are designed to comply with the requirements of these regulatory bodies and frameworks:
US federal tax returns, Form 1040, 2555, 1116
FBAR (FinCEN 114) reporting obligations
UK PAYE, National Insurance, Self Assessment
Spanish IRPF, Modelo 720 reporting
Dutch Box 1/2/3, 30% ruling treatment
Form 8938 foreign financial asset reporting
File your 2025 return or get an advisory memo tailored to your jurisdiction and compensation structure.
Get startedAgentax provides tax preparation software and AI-assisted advisory memos — it is not a licensed tax advisor, CPA, or enrolled agent. Advisory memos are informational only and do not constitute legal or tax advice unless reviewed and signed by a qualified professional.