FATCA: Definition, Requirements, and Swiss Implementation

Definition

The Foreign Account Tax Compliance Act (FATCA) is a United States federal law, enacted in 2010 as part of the Hiring Incentives to Restore Employment (HIRE) Act, that requires foreign financial institutions (FFIs) worldwide to identify and report information about financial accounts held by US persons. FATCA is designed to combat tax evasion by US taxpayers using offshore financial accounts, and it imposes significant compliance obligations on financial institutions globally — including those in Switzerland.

Purpose and Background

FATCA was enacted in response to concerns that US taxpayers were using foreign bank accounts and investment structures to evade domestic tax obligations. The law creates a reporting regime that provides the US Internal Revenue Service (IRS) with information about financial accounts held by US persons at foreign institutions, supplementing the existing domestic reporting framework.

The law operates through a combination of reporting requirements imposed on foreign financial institutions and withholding penalties for non-compliant institutions. The practical effect is that financial institutions worldwide are incentivised to identify US account holders and report their account information to the IRS, either directly or through their domestic tax authority.

Key Requirements

US Person Identification

Foreign financial institutions must identify account holders who are US persons. The definition of US person is broad, encompassing:

• US citizens (regardless of country of residence)
• US permanent residents (green card holders)
• Persons who meet the substantial presence test
• Certain US-owned entities

Identification relies on both self-certification by account holders (typically through IRS Form W-8BEN or W-9) and due diligence procedures that require institutions to search for US indicia in account records — including US addresses, US telephone numbers, US place of birth, and standing instructions to transfer funds to US accounts.

Reportable Information

For identified US accounts, institutions must report:

• Name, address, and US taxpayer identification number (TIN) of each US account holder
• Account number
• Account balance or value at year-end
• Gross amounts of interest, dividends, and other US-source income
• Gross proceeds from the sale of securities that generate US-source income

Withholding

Non-compliant foreign financial institutions face a 30 per cent withholding tax on certain US-source payments, including dividends, interest, and — in some cases — gross proceeds from the sale of US securities. This withholding penalty provides the enforcement mechanism that incentivises global compliance.

Swiss Implementation

Switzerland implemented FATCA through a bilateral intergovernmental agreement (IGA) with the United States, signed in 2013. The Swiss-US FATCA agreement follows the Model 2 IGA framework, which operates as follows:

Institution-level reporting. Swiss financial institutions report FATCA information directly to the IRS (not through the Swiss Federal Tax Administration), using IRS reporting forms.

Consent-based exchange. For accounts where the holder has consented to reporting, detailed account information is provided to the IRS. For accounts where the holder has not consented, the institution reports aggregate data (number of accounts and total account values) without identifying information.

Group requests. The aggregate data enables the IRS to submit group requests to the Swiss Federal Tax Administration under the Switzerland-US double taxation agreement, seeking identification of non-consenting account holders through the treaty-based administrative assistance process.

Implementation in Practice

Swiss financial institutions — including banks, securities dealers, insurance companies, and collective investment schemes — have implemented FATCA compliance programmes that encompass:

Account opening procedures. New account applications include FATCA-related questions and documentation requirements. US persons must complete IRS Form W-9 and consent to reporting.

Pre-existing account review. Accounts that existed before FATCA implementation have been reviewed for US indicia, with remediation procedures applied to identify and classify US accounts.

Ongoing monitoring. Institutions monitor accounts for changes in circumstances that could indicate US person status — such as a change of address to a US location.

System development. Banks have invested significantly in technology to support FATCA identification, classification, and reporting processes. RegTech solutions have been important enablers of efficient FATCA compliance.

Impact on Swiss Banking

FATCA has had significant consequences for the Swiss financial centre:

Historical reckoning. FATCA — and the broader US enforcement effort against Swiss banks that facilitated tax evasion — resulted in substantial penalties, deferred prosecution agreements, and the closure of accounts for US persons at many Swiss institutions. Several Swiss banks paid billions in fines to US authorities.

Operational burden. FATCA compliance imposes significant operational costs, including system development, staff training, and ongoing reporting. These costs are particularly burdensome for smaller institutions with limited US-related business.

Client impact. Some Swiss financial institutions have chosen to exit the US client market entirely, declining to accept US persons as clients rather than bearing the compliance costs and regulatory risks. US citizens living abroad have reported difficulty in maintaining banking relationships as a result.

Regulatory precedent. FATCA established the template for the global automatic exchange of financial information that was subsequently implemented through the Common Reporting Standard (CRS). The two frameworks now operate in parallel, with CRS extending the automatic exchange principle to over 100 jurisdictions.

FATCA vs CRS

While FATCA and CRS share the same fundamental objective — tax transparency through automatic information exchange — they differ in several important respects:

Swiss financial institutions must comply with both frameworks, maintaining parallel identification, classification, and reporting processes for FATCA and CRS.

Practical Implications

For US persons with accounts at Swiss financial institutions, FATCA means that account information is reported to the IRS. US taxpayers must ensure that their offshore accounts are properly disclosed on their US tax returns, including:

• FBAR (FinCEN Form 114). Required for US persons with aggregate foreign account balances exceeding USD 10,000 at any point during the year.
• Form 8938. Required for US persons whose foreign financial asset values exceed specified thresholds.
• Form 1040. Worldwide income, including income from foreign accounts, must be reported on the annual US tax return.

Non-compliance with US reporting obligations can result in severe penalties, including substantial fines and criminal prosecution.

For Swiss financial institutions, FATCA compliance is an essential component of the regulatory compliance framework, integrated with AML and broader international tax transparency obligations.

Donovan Vanderbilt is a contributing editor at ZUG FINANCE, the Swiss private banking and fintech intelligence publication of The Vanderbilt Portfolio AG, Zurich. He covers wealth management, institutional finance, and regulatory affairs across the Swiss financial centre.