FATCA and CRS are two different systems for making bank accounts visible across borders, and the practical difference comes down to who is reported and to whom. FATCA is a U.S. law that requires foreign banks to identify American citizens and green card holders and report their accounts to the IRS, backed by a 30% withholding penalty for banks that refuse. The Common Reporting Standard is a separate OECD framework that more than 120 countries use to automatically swap financial data with each other based on tax residency. The United States has not joined CRS, so the two regimes run in parallel with different triggers, different thresholds, and different consequences.
The Structural Difference
FATCA is one country’s statute. Congress passed it as part of the HIRE Act of 2010 and codified it in Sections 1471 through 1474 of the Internal Revenue Code.1Office of the Law Revision Counsel. 26 U.S.C. Chapter 4 – Taxes To Enforce Reporting On Certain Foreign Accounts The Treasury negotiated bilateral intergovernmental agreements with more than 100 jurisdictions to make it enforceable abroad, and the 30% withholding tax on U.S.-source payments to noncompliant banks is what gives the law its bite.2Internal Revenue Service. Summary of Key FATCA Provisions
CRS is not a law at all. The OECD published it in 2014 as a standard, and it becomes binding only when each participating country writes it into local legislation. Its force comes from a multilateral competent authority agreement signed by more than 120 jurisdictions.3Organisation for Economic Co-operation and Development. Signatories of the Multilateral Competent Authority Agreement on Automatic Exchange of Financial Account Information
The United States is absent from that list. The U.S. government’s position is that FATCA already delivers what the IRS needs, and joining CRS would add compliance costs on American banks without producing new information about U.S. taxpayers.4Congress.gov. The Foreign Account Tax Compliance Act (FATCA) For a bank sitting in a CRS country, that means running both systems at once: CRS to exchange data with other participating nations, and FATCA to report Americans to the IRS.
Who Gets Reported
FATCA follows nationality. If you hold U.S. citizenship or a green card, foreign banks must report your accounts to the IRS regardless of where you live, how long you’ve been abroad, or whether you’ve filed a U.S. return in years. Banks screen for “U.S. indicia” like an American birthplace, a U.S. mailing address, or a U.S. phone number on file. Any of those flags prompts a closer look.5Internal Revenue Service. FATCA Information for U.S. Financial Institutions and Entities
CRS ignores nationality and follows tax residency. When you open an account in a CRS country, the bank asks you to self-certify where you are tax-resident, and if you declare residency in another participating jurisdiction, your data flows to that country’s tax authority.6Organisation for Economic Co-operation and Development. Tax Residency Residency is determined under each country’s domestic rules, so a person can be tax-resident in more than one place at once, and in that case the bank reports to every relevant jurisdiction.
The gap opens up most obviously for U.S. citizens abroad. A dual citizen living permanently in Germany is still reported to the IRS under FATCA because of the citizenship. Under CRS, the German bank would report that same person only to whatever country they declare as their tax residence, and none of that CRS data reaches the IRS, because the U.S. is not in the exchange network.
Reporting Thresholds
The two systems treat small accounts very differently.
FATCA
On the bank side, foreign financial institutions can skip due diligence on pre-existing individual accounts under $50,000. Above that, they must identify and report. Pre-existing entity accounts have a $250,000 review threshold. Individual accounts over $1,000,000 trigger enhanced due diligence, including manual record review and, in some cases, a relationship manager inquiry.
On the taxpayer side, U.S. persons file Form 8938 with the IRS when foreign financial assets exceed $50,000 at year-end for a single filer living in the United States. The threshold climbs for joint filers and for Americans abroad. A married couple filing jointly from overseas does not trigger the filing obligation until foreign assets exceed $400,000 at year-end or $600,000 at any point during the year.7Internal Revenue Service. Summary of FATCA Reporting for U.S. Taxpayers
CRS
CRS has no minimum balance for individual accounts. A new account with $10 in it triggers the same reporting obligation as one holding $10 million. The bank obtains a self-certification of tax residency at account opening and reports accordingly.8Organisation for Economic Co-operation and Development. Consolidated Text of the Common Reporting Standard (2025) The only threshold relief is for pre-existing entity accounts, which financial institutions may defer reviewing until the balance exceeds $250,000.
The practical result: under FATCA, a modest foreign account can fall below both the bank threshold and the taxpayer threshold and generate no report to the IRS. Under CRS, that same account is reported to the account holder’s country of tax residence no matter how small.
How the Data Moves
FATCA data flows through one of two channels depending on the intergovernmental agreement a country signed. Under a Model 1 agreement, banks send data to their own government, which forwards it to the IRS. Under Model 2, banks report directly to the IRS.9Internal Revenue Service. FATCA Governments Either way, the arrangement is bilateral, negotiated one country at a time.
CRS runs on a single multilateral agreement. Banks in every participating country collect the same standardized data, report it to their local tax authority, and those authorities exchange it automatically with every other relevant country once a year. No pairwise negotiation, no separate data formats.
The Reciprocity Gap
CRS is fully reciprocal: every participating country both sends and receives. FATCA is not. The United States collects extensive account data from foreign banks but shares far less in return. The IRS lacks statutory authority to collect certain data points that partner countries would need, including some account balance and beneficial ownership information.4Congress.gov. The Foreign Account Tax Compliance Act (FATCA) The European Union and others have called the asymmetry a form of financial secrecy on the U.S. side, since foreign governments cannot obtain the same level of detail about their residents’ U.S. accounts that the IRS demands about American accounts abroad.
Penalties
FATCA penalties operate at two levels. For foreign banks, noncompliance means a 30% withholding tax on U.S.-source payments they receive.10Office of the Law Revision Counsel. 26 U.S. Code 1471 – Withholdable Payments to Foreign Financial Institutions For a global bank processing billions in U.S.-connected transactions, that is an existential threat, which is why FATCA achieved near-universal compliance abroad despite being a unilateral U.S. law.
For individual U.S. taxpayers, failure to file Form 8938 carries an initial $10,000 penalty. If the IRS sends a notice and you still do not file, an additional $10,000 accrues every 30 days, up to a maximum additional penalty of $50,000.11Office of the Law Revision Counsel. 26 U.S.C. 6038D – Information With Respect to Foreign Financial Assets The statute of limitations on the underlying return does not start running when Form 8938 is omitted, which means the IRS can reopen the year long after you assumed it was closed.
CRS imposes no penalties directly. Because it is a standard rather than a law, enforcement depends entirely on how each participating country writes its implementing legislation, and penalties for noncompliance vary widely across jurisdictions.
What This Means for a U.S. Person Abroad
If you hold U.S. citizenship or a green card and have foreign accounts, FATCA reaches you regardless of where you live, and CRS is largely beside the point for reporting to the IRS. Two separate filings can come into play, and one does not substitute for the other.
Form 8938 is the FATCA-created obligation. You file it with your federal tax return, and it goes to the IRS. The FBAR (FinCEN Form 114) predates FATCA by decades and goes to the Financial Crimes Enforcement Network, a separate bureau within Treasury.12Internal Revenue Service. Comparison of Form 8938 and FBAR Requirements The FBAR threshold is much lower: $10,000 in combined foreign account balances at any point during the year. Form 8938 thresholds start at $50,000 and rise from there. Many Americans abroad need to file both for the same accounts.
FBAR penalties are separate from Form 8938 penalties. A non-willful violation carries a maximum penalty of $10,000 per account per year (inflation-adjusted). A willful violation jumps to the greater of $100,000 (also inflation-adjusted) or 50% of the highest account balance during the year, with criminal prosecution possible in extreme cases. No penalty applies for a non-willful violation if you reported all the income and had reasonable cause for not filing.
Form 8938 reaches foreign bank accounts, brokerage accounts, interests in foreign entities, foreign-issued insurance policies with a cash value, foreign pensions, and financial instruments with foreign counterparties. It does not reach foreign real estate you own directly, even rental property, and it does not reach directly held precious metals, art, collectibles, or foreign currency. Foreign stocks held in a U.S. brokerage account are not reported on Form 8938 either, because the account itself is domestic. But if you hold foreign real estate through a foreign LLC or trust, the interest in that entity is reportable even though the property is not.13Internal Revenue Service. Basic Questions and Answers on Form 8938
One more wrinkle for anyone using a holding structure. Both regimes look through “passive” non-financial entities to the people behind them. Under FATCA, an entity is active if less than 50% of its income in the prior year was passive (dividends, interest, royalties, similar returns) and less than 50% of its assets produced or were held to produce passive income. Passive entities require the bank to identify controlling persons and report any who are U.S. persons; CRS applies the same look-through and reports controlling persons to their country of tax residence.
Crypto Sits in a Gap
Neither FATCA nor the original CRS was drafted with crypto in mind, and the rules are still moving. The IRS has not issued definitive guidance on whether digital assets held on a foreign exchange must be reported as specified foreign financial assets on Form 8938. Whether a foreign crypto exchange qualifies as a “foreign financial institution” maintaining a “financial account” under the statutory definitions remains open.
The OECD moved faster. In 2023 it published the Crypto-Asset Reporting Framework, a companion to CRS that requires crypto-asset service providers to collect and report user transaction data.14Organisation for Economic Co-operation and Development. International Standards for Automatic Exchange of Information in Tax Matters It also amended CRS to bring electronic money products and central bank digital currencies into scope and to capture indirect crypto exposure through derivatives and investment vehicles. Early-adopting jurisdictions begin implementing CARF on January 1, 2026, with the first exchanges expected in 2027.
For U.S. taxpayers with crypto on foreign platforms, the cautious approach is to file an FBAR if the platform qualifies as a foreign financial account and the $10,000 aggregate threshold is met. Waiting for the IRS to publish final guidance on Form 8938 treatment risks penalties if the ultimate answer is that foreign exchange accounts are reportable.