# Expat CPA Tax

> Probe-verified (tier 2 of 3). Last checked 2026-08-23. 2 of 5 capability checks passed.

- host: expatcpatax.com
- url: https://expatcpatax.com/
- category: tax preparation
- type: business
- country: US
- locations: South Korea, Japan, Hong Kong, Singapore, Thailand, Taiwan, Philippines, China, India, Bangladesh, United Arab Emirates, Saudi Arabia, Qatar, Kuwait, Bahrain, Iraq, Israel, Turkey, Canada, Mexico, Brazil, Costa Rica, Turks and Caicos, Panama, Colombia, Ecuador, Argentina, Kenya, Nigeria, Sudan, Tajikistan, Kyrgyzstan, Kazakhstan, Uzbekistan, Australia, New Zealand, United States
- language: en

## Probe-verified · tier 2 of 3

Probed live on 2026-08-23 against rubric v1. 2 of 5 checks passed.

- PASS — Markdown negotiation
- PASS — Markdown twin at a predictable URL
- fail — llms.txt
- fail — API catalog
- fail — MCP server answers

## Unverified actions

Read from the page's own content, with the wording each was drawn from. Inference is kept separate from tested facts; an agent completing the action is tier 3.

- **register** — "[Start your taxes]" → `#inquiry`

## Summary

Expat CPA Tax provides US federal tax preparation and filing services for US citizens and green-card holders living abroad, including FBAR, FATCA, and Streamlined filing.

## Context

3040 sites in this index share the type "business"; 1936 are transactional.

## How we grade

- tier 1 — **Declared**: The site says agents are welcome in its robots.txt. A permission, not a capability.
- tier 2 — **Probe-verified** (this site): We fetched the site and tested each signal ourselves. Dated, repeatable, re-checked on a schedule.
- tier 3 — **Behaviourally verified**: An agent completed the action end to end — booked, bought, submitted — and it worked.

## About this record

Known-Good probes sites live and publishes what was tested and when.
Method: https://knowngood.sh/about.md · Rubric: https://knowngood.sh/benchmark