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Mauritius reporting rules and U.S. foreign trust forms

Mauritius information exchange and beneficial ownership reporting rules sit alongside IRS reporting regimes relevant to U.S. citizens who own or receive distributions from foreign trusts.

Mauritius and the Common Reporting Standard

Mauritius publishes the Common Reporting Standard (CRS) as a framework for financial account due diligence and reporting. Its Revenue Authority lists CRS regulations, guidance, participating and reportable jurisdictions, and a reporting user guide among its CRS materials.[2]

The standard requires a reporting financial institution to report specified details for each reportable account. For an individual account holder, the information includes name, address, tax residence jurisdiction, taxpayer identification numbers, birth details and whether a valid self-certification was provided. Where an entity account holder has reportable controlling persons, identifying information about the entity and each person, including each person's role, is included.[8]

The Mauritius Revenue Authority's FAQ describes controlling persons as natural persons who ultimately own or control a legal entity or arrangement, including a trust. It says the look-through process applies to Passive NFEs, and identifies a 20 percent threshold for controlling ownership interests. The FAQ also says a resident trust that is a financial institution has CRS registration and reporting obligations even when it has made a declaration of non-residence for income tax purposes.[7]

For a U.S. citizen, these are jurisdictional financial institution reporting rules. The IRS describes FATCA separately as requiring foreign financial institutions to report information about accounts held by U.S. taxpayers, or by foreign entities in which U.S. taxpayers hold substantial ownership interests.[3]

  • Mauritius financial institutions submit CRS information to the MRA in XML format.[7]

FATCA agreement status for Mauritius

The U.S. Treasury table lists Mauritius as having a Model 1 intergovernmental agreement in force. Treasury explains that FATCA agreements are one route through which foreign financial institutions comply with the framework in their jurisdictions.[3]

This agreement status describes the U.S.-Mauritius government framework for financial institution reporting.

Beneficial ownership information and registers

Mauritius requires companies and partnerships to identify their beneficial owners and submit that information to a Beneficial Ownership Register maintained by the Corporate and Business Registration Department within the Companies and Businesses Registration Integrated System.

Entities must report changes in beneficial ownership within 14 days and file beneficial ownership information annually. Beneficial owners must also notify entities about changes in their beneficial ownership status. These rules concern ownership records maintained under Mauritius law; they are separate from an individual IRS form filing by a U.S. citizen.[9]

The CRS rules address account-level information through financial institutions. Where an entity account holder has reportable controlling persons, the standard calls for information about those people and their roles.

IRS reporting for U.S. persons connected to foreign trusts

The IRS defines a U.S. person to include a U.S. citizen or resident. The IRS says information reporting may apply to a U.S. person who transacts with a foreign trust, is treated as its owner under grantor trust rules, or receives trust distributions. The forms involved include Forms 3520 and 3520-A, Form 8938 and FinCEN Form 114, known as FBAR.[5]

Form 3520

The IRS says Form 3520 generally applies when a U.S. person creates or transfers money or property to a foreign trust, makes a loan to one, receives trust distributions or certain use of trust property, or is treated as the U.S. owner under grantor trust rules. A U.S. beneficiary receiving a distribution from a foreign non-grantor trust generally reports a share of distributable net income. The IRS says beneficiary statements provide information about distribution taxability, and its Form 3520 instructions address reporting distributions even if no statement is received.[5]

Form 3520-A

A U.S. person treated as the owner of a foreign trust under grantor trust rules has a related Form 3520-A reporting role. The IRS says the foreign trust must timely file a complete and accurate annual information return and furnish required annual statements to U.S. owners and beneficiaries. If the trust does not file, the U.S. owner must complete a substitute Form 3520-A, attach it to a timely filed Form 3520, and furnish the required statements.[5]

Form 8938 and FBAR

Form 8938 may be required to report specified foreign financial assets when their total value exceeds applicable reporting thresholds. Separately, the IRS says a person with a financial interest in or signature authority over a foreign financial account, including a trust account, may have to report it annually on FinCEN Form 114, FBAR. The IRS notes that exceptions from Forms 3520 and 3520-A do not remove any Form 8938 or FBAR reporting obligation that otherwise applies.[5]

A U.S. citizen's status as owner, transferor or beneficiary can relate to Forms 3520 and 3520-A, while Form 8938 and FBAR depend on the separate asset and account conditions described by the IRS.[5]

Questions and answers

What does Mauritius CRS reporting cover?

The standard calls for reporting financial institutions to report information about each reportable account. This can include account holder identity and tax residence details, and information on reportable controlling persons of entity account holders.[8]

Does the Mauritius CRS FAQ address trusts?

Yes. It says a resident trust that is a financial institution must register for CRS and fulfill reporting obligations, including where it has declared non-residence for income tax purposes.[7]

What FATCA agreement model does Treasury list for Mauritius?

Treasury lists Mauritius under Model 1, with status shown as in force.

When does the IRS say Form 3520 relates to a foreign trust?

The IRS says it generally applies to U.S. persons who create or transfer property to a foreign trust, make a loan to one, receive certain trust benefits or distributions, or are treated as its U.S. owner.[5]

Who has the Form 3520-A role for a foreign trust?

The IRS says a foreign trust with a U.S. owner must file Form 3520-A and provide annual statements. If the trust does not file, the U.S. owner must attach a substitute return to a timely Form 3520 and furnish the statements.[5]

When may Form 8938 apply to a U.S. citizen?

The IRS says Form 8938 may be required when the total value of specified foreign financial assets in which the person has an interest exceeds applicable reporting thresholds.[5]

When may FBAR apply to a foreign trust account?

The IRS says FBAR may apply when a person has a financial interest in or signature authority over a foreign financial account, including a trust account. The report is filed annually and electronically with FinCEN on FinCEN Form 114.[5]

Related glossary terms

  • Section 6048: Section 6048 sets information reporting rules for certain foreign trusts. Its parts cover notice of events, U.S. owner duties and beneficiary distributions.
  • Section 679: Section 679 addresses certain transfers by U.S. persons to foreign trusts. It treats some property transfers as ownership when the trust has a U.S. beneficiary.
  • Foreign trust classification: A trust is foreign under Form 3520 when it fails either domestic trust test. The tests ask about U.S. court supervision and control of substantial decisions.

Related articles and guides

Tools and official documents

  • FATCA agreement lookup: Look up any jurisdiction in the U.S. Treasury FATCA table and see its agreement model and status as the Treasury lists them, with a link to the source.
  • IRS and FinCEN forms: reference pages: Reference pages for 15 IRS and FinCEN forms tied to foreign trusts, foreign accounts and entities, built from the official forms and their instructions.
Sources and data notes
  1. Financial Services Commission, Mauritius, Global Business. https://www.fscmauritius.org/licensing-supervision/licensing/global-business. Retrieved .
  2. Mauritius Revenue Authority, Common Reporting Standard (CRS). https://www.mra.mu/index.php/business/crs?highlight=WyJkZWFkbGluZSJd. Retrieved .
  3. U.S. Department of the Treasury, Foreign Account Tax Compliance Act: agreements and understandings by jurisdiction. https://home.treasury.gov/policy-issues/tax-policy/foreign-account-tax-compliance-act. Retrieved .
  4. Internal Revenue Service, United States income tax treaties, A to Z. https://www.irs.gov/businesses/international-businesses/united-states-income-tax-treaties-a-to-z. Retrieved .
  5. Internal Revenue Service, Foreign trust reporting requirements and tax consequences. https://www.irs.gov/businesses/international-businesses/foreign-trust-reporting-requirements-and-tax-consequences. Retrieved .
  6. Internal Revenue Service, Instructions for Form 3520. https://www.irs.gov/instructions/i3520. Retrieved .
  7. Mauritius Revenue Authority, FAQs, Common Reporting Standard (CRS). https://www.mra.mu/download/CRSFAQ.pdf. Retrieved .
  8. Government of Mauritius, Income Tax (Common Reporting Standard) (Amendment) Regulations 2026. https://www.mra.mu/download/CRSReg2026.pdf. Retrieved .
  9. OECD Global Forum on Transparency and Exchange of Information for Tax Purposes, Mauritius: Enhanced Monitoring Report on the Implementation of the Standard on Transparency and Exchange of Information . https://www.oecd.org/en/publications/enhanced-monitoring-report-on-the-implementation-of-the-standard-on-transparency-and-exchange-of-information-on-request-2026-update-june_9ef50941-en/full-report/mauritius_a85b5244.html. Retrieved .

Dates in this block record when each source was read for this page.