Built by a team with over a decade of international tax advisory experience — for people navigating tax obligations across borders, from US expat returns to UK Self Assessment and advisory across Europe.
We've lived both sides of the cross-border tax problem — as expats filing across jurisdictions, and as operators scaling global teams.
Filed across multiple jurisdictions globally. Treaty elections, equity comp, FBAR/FATCA — navigated firsthand.
Built tech companies with employees across regions. Seen how fast employer tax obligations compound.
Tax filing, advisory memos, equity exercise planning, and compliance — purpose-built for expats.
US returns and UK Self Assessment filed consistently, plus advisory memos across European jurisdictions.
Agentax is not a chatbot and not a legacy accounting firm. Our platform combines AI-powered tax intelligence — trained on IRS publications, tax treaties, and local tax authority guidance — with experienced tax advisor review at every step.
Preparation, analysis, citation.
Judgment, review, sign-off.
Three commitments that shape every decision — from the engine to the advisory memo to the reviewer's sign-off.
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 people earning income across borders.
Our advisory memos cite authoritative sources inline. Our filing engine shows you exactly how every number is calculated — no black boxes.
File your US or UK return, or get advice on an equity event or a move abroad — start with a conversation.