The FATCA (Foreign Account Tax Compliance Act) and the CRS (Common Reporting Standard) are the two main frameworks that enable governments to obtain information about offshore assets.
How the automatic exchange works
- When you open a bank account you are asked whether you are a U.S. person (FATCA) or, for non‑U.S. residents, what your tax residency is (CRS).
- The bank records the answer and, once a year, forwards a report to the tax authority of the declared residence.
- The report typically contains only the existence of the account, the account balance and, in some cases, the interest or dividend income earned.
- This automatic exchange replaced the older, manual “information exchange” that required a separate request for each case.
Request‑based exchange: Tax Information Exchange Agreements (TIEAs)
- Apart from the automatic CRS/FATCA flow, a country can obtain data by issuing a formal request under a Tax Information Exchange Agreement.
- The request is sent to the foreign tax authority, which must supply the information if it has a TIEA with the requesting country.
- The global network of TIEAs is relatively small; many jurisdictions do not have bilateral agreements with every other country.
The CRS umbrella
- Over 100 jurisdictions have signed onto the CRS, creating a multilateral “one‑stop‑shop” for information sharing.
- Because most countries of interest are CRS signatories, the need for separate TIEAs is reduced, but it does not eliminate the possibility of a request‑based exchange.
Practical impact of requests
- Requests are uncommon. In many jurisdictions only a few hundred requests are submitted annually (e.g., roughly 300 per year in some countries).
- Some jurisdictions struggle to comply. Vanuatu, for example, signed several TIEAs but lacked the administrative capacity to fulfill them.
- When a request is made, the foreign authority must provide the data, but the process can be cumbersome and slow.
How governments may investigate without a formal request
- Transaction tracing: authorities follow the flow of money through banks, payment processors, and other intermediaries to identify the source and destination of funds.
- Direct inquiries: tax agencies can ask banks, accountants, or other service providers for records, emails, phone logs, or travel information that link a person to offshore activity.
- Burden of proof: the taxpayer must demonstrate that decisions were made abroad; this can be difficult if most communications occur through electronic channels that are accessible to investigators.
Leaks and whistleblower programs
- Large data leaks such as the Panama Papers, Pandora Papers, and LuxLeaks provide authorities with a trove of offshore information that can be cross‑checked against existing filings.
- Some countries (e.g., the United States and Canada) operate whistleblower reward programs. In high‑value cases, rewards can reach hundreds of millions of dollars, though smaller, less‑substantiated tips are rarely compensated.
Key take‑aways
- FATCA applies only to U.S. persons; CRS covers virtually all other jurisdictions that have signed on.
- Automatic reporting is annual and limited to basic account data; real‑time monitoring does not occur.
- Request‑based exchanges via TIEAs are possible but relatively rare and depend on the existence and effectiveness of bilateral agreements.
- Compliance capacity varies widely; some jurisdictions cannot fulfill requests promptly.
- Authorities can also use transaction analysis, direct inquiries, and data‑leak investigations to uncover undisclosed offshore holdings.
Understanding these mechanisms helps individuals and businesses assess the risk that foreign assets will be disclosed to their home‑country tax authorities.
