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Key Takeaways

  • Companies, individuals and non-residents may each need a tax ID depending on their activity in Antigua and Barbuda.
  • The Inland Revenue Department issues the tax ID, which has a defined format distinct from company registration and social security numbers.
  • Applying requires specific supporting documents, with extra considerations for non-resident owners and their advisers.
  • Everyday functions such as filing, banking and self-certification rely on holding a valid tax ID.

A Tax Identification Number, or TIN, is the single reference the government uses to track every taxpayer obligation in the country. In Antigua and Barbuda the TIN is issued and administered by the Inland Revenue Department (IRD), the revenue agency within the Ministry of Finance and Corporate Governance, under the Tax Administration and Procedures Act No. 12 of 2018.

This identifier affects any foreign-owned company, self-employed individual, or non-resident investor who earns income sourced within the country or registers a local entity. The article explains when a tax ID in Antigua and Barbuda is required, how it is structured, how to apply, and how it intersects with banking, reporting, and cross-border compliance.

It is most relevant to foreign business owners weighing incorporation and to advisers managing the obligations of an entity with Antiguan ties.

Antigua and Barbuda does issue a TIN: a unique identifier assigned to individuals, businesses, and legal entities for tax purposes. Any taxpayer required to file a return is registered with the IRD and given a number once registration is complete.

The number is permanent. Once assigned, a TIN stays with the taxpayer for life and is never renewed, and each person may hold only one.

No structural overhaul of the system has taken place. The framework rests on the Tax Administration and Procedures Act No. 12 of 2018, which the IRD administers across the full range of taxes it collects.

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The IRD is the only body with authority to issue a TIN; no other agency performs this function. It operates as the revenue collection arm of the government, led by the Commissioner of Inland Revenue.

The same identifier carries across every tax the department oversees, from corporate income tax and the unincorporated business tax to withholding taxes, the Antigua and Barbuda Sales Tax (ABST), and a range of sector levies. To distinguish one tax obligation from another, the IRD appends a two-digit tax-type code to the base number, creating a separate tax account number for each tax.

There is no online tool for verifying a TIN. In December 2024 the department published a Guidance Note on Complying with Beneficial Ownership, reflecting its expanded function as Competent Authority for transparency reporting.

No online verification

The IRD does not provide a public TIN lookup or verification tool. Confirmation of a number is handled directly with the department.

Registration follows the filing obligation. Anyone required to file a return, individual or entity, is registered and assigned a TIN, and when a corporation or partnership registers, any owner not yet on the system receives an individual number at the same moment.

For a foreign owner this last point matters. Registering a local company can pull its shareholders or partners into the system, so unregistered beneficial owners are issued their own TINs alongside the entity.

Companies must register with the IRD after incorporation. Self-employed persons, including foreign nationals working in the country, must register as well, and all employees must hold a number; a non-resident registering presents a passport, of which the department takes a photocopy.

Participants approved under the Permanent Residency Programme for high-net-worth individuals receive both a Certificate of Residency and a TIN automatically. A non-resident with no Antigua-sourced income, by contrast, has no tax liability and no compulsory registration.

There is no personal income tax, so residents and non-residents generally do not file personal returns. Business owners and the self-employed remain the exception, filing profit and loss forms tied to their business structure.

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The TIN is numeric and generally understood to be a unique nine-digit number, following a format defined by the IRD. Public documentation of the precise character breakdown is limited, and no letters or separators are confirmed in official sources.

Tax account numbers build on this base. For a specific tax type, a two-digit code is attached to the end of the base TIN to form the account reference used in filings.

The OECD's published TIN information for the jurisdiction is the primary public source for format details. Beyond the nine-digit description, no further structural specification appears in available records.

Application is made in person at the IRD office; there is no public online process. The form depends on who is registering.

  • Individuals and employees: Form F19 creates a TIN and registers the person as an employee. A non-resident submits the completed form together with a passport, which the IRD photocopies.
  • Self-employed persons: Form F14 is used to obtain a TIN.
  • Businesses: The ABST registration application requests the TIN; an applicant without one must first complete Form F14 at the IRD.

Supporting documents are straightforward. An individual presents a national ID or passport; a business presents its registration certificate together with identification of the representative.

No official source confirms a set fee, which is typically free or a small administrative charge, and no published processing time exists. As a general matter, the number is issued once the registration officer verifies the documents. The IRD office sits at Woods Centre, Friars Hill Road, St. John's.

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A TIN is not the same as a company registration number, and it is not a Social Security Number. Incorporation is handled by the Antigua and Barbuda Intellectual Property and Commerce Office (ABIPCO), while the TIN comes from the IRD after or alongside incorporation, separate from the corporate registry number.

The TIN is also distinct from the Social Security Number issued by the Social Security Board. The IRD's own Form F19 treats the two as separate fields.

A business operating locally engages several bodies. Beyond the IRD for tax, it registers with the Social Security Board, the Medical Benefits Board, and the Board of Education, each serving a different purpose.

Identifiers and the bodies that issue them
Identifier Issuing body Purpose
TIN Inland Revenue Department Tax registration and filing
Company registration number ABIPCO Incorporation and corporate registry
Social Security Number Social Security Board Social security contributions

Invoices issued by a business should carry the TIN, marking it as an operational reference used in commercial documents.

Once issued, the TIN must be quoted in all correspondence with the IRD and appears on every major filing the department handles. Corporate income tax, the unincorporated business tax, withholding taxes, ABST, and the various sector levies all rely on it as the taxpayer identifier.

Invoices must show the number alongside business and client details, a description of goods or services, amounts, and any applicable ABST. A business crosses into mandatory ABST registration, and therefore TIN registration if it has none, once annual taxable sales exceed EC$300,000.

The number also anchors financial-account reporting. The IRD publishes Common Reporting Standard self-certification forms for entities, individuals, and controlling persons, with the TIN as the key identifier; under the FATCA agreement with the United States, reporting institutions collect the U.S. TIN of American account holders alongside the local one.

Filing dates carry the TIN on every submission. Individual returns are due by 31 March for the preceding income year with tax payable by 30 April, and late filing draws a penalty of $500 or 5% of the tax due, whichever is greater.

Source rules shape the obligation. A non-resident company pays corporate tax only on income derived from within Antigua and Barbuda, and an International Business Company structured to operate entirely outside the jurisdiction has no requirement to file a return or pay tax there.

Two features ease cross-border planning. The country does not enforce Controlled Foreign Corporation rules, and in October 2024 the Council of the European Union removed it from the list of non-cooperative tax jurisdictions, reducing friction for EU-connected structures.

Where local-source income arises, withholding applies. Non-residents face a 12.5% withholding tax on dividends, interest, and royalties sourced within the country, and the withholder must hold a TIN under IRD rules.

  • Registering a non-individual entity also pulls unregistered partners or shareholders into the system, so non-resident beneficial owners are assigned individual TINs at that point.

Information will move across borders. The jurisdiction participates in CRS, so local banks share account data with foreign tax authorities, and U.S. citizens must report accounts and assets to the IRS under FATCA.

Two caveats deserve attention from advisers. There is no double tax agreement between Antigua and Barbuda and the United States, and as of September 2023 Switzerland's automatic exchange list reclassified the jurisdiction as "temporarily non-reciprocal," which may affect information flows in Swiss-connected structures.

The transparency framework continues to deepen, and TIN-based identification sits at its centre. Antigua and Barbuda signed the CRS Multilateral Competent Authority Agreement on 29 October 2015, with automatic exchange of account information beginning in September 2018.

FATCA obligations rest on the IGA signed 31 August 2016 and its implementing statute of 2017. The country also signed the Country-by-Country Reports exchange agreement on 28 January 2024 and the BEPS multilateral instrument on 18 June 2025, though the latter is not yet in force.

Its agreement network includes 12 double taxation treaties and 17 tax information exchange agreements, supported by domestic AEOI legislation enacted between 2002 and 2017. On AML and CFT, the FATF confirmed in February 2014 that the jurisdiction had exited enhanced monitoring, with ongoing assessment through the Caribbean Financial Action Task Force.

The direction of travel is toward tighter beneficial ownership identification, underscored by the IRD's December 2024 guidance note. Financial institutions must upload their FATCA and CRS submissions by 15 August 2026.

For a foreign owner, the practical position is clear: a TIN is required wherever there is a local entity, local employment, or Antigua-sourced income, and it is issued only by the IRD, in person, on a permanent basis. Where a company trades entirely offshore or a non-resident earns nothing locally, no registration obligation arises. Registering a company can draw its owners into the system through individual numbers, a step worth anticipating. With the country off the EU list and embedded in CRS and FATCA reporting, the TIN functions as much as a compliance reference as a tax filing tool.

Expanship handles TIN registration with the IRD as part of setting up and running a foreign-owned entity, coordinating the forms, documents, and in-person submission so the number is in place when filing and banking require it. The same support extends across the wider obligations a non-resident business carries in the jurisdiction.

  • Company incorporation through ABIPCO
  • Registered agent and local office services
  • Tax registration and return filing with the IRD
  • Ongoing compliance and deadline management
  • Accounting and bookkeeping
  • Introductions to local banking

To discuss your requirements, contact Expanship Antigua and Barbuda.

No. A TIN is permanent once assigned and is never renewed, and each taxpayer may hold only one number for life.

Application is made in person at the IRD office at Woods Centre, St. John's, and there is no public online process. A non-resident presents the completed registration form with a passport, of which the department takes a photocopy.

No. The company registration number comes from ABIPCO during incorporation, while the TIN is issued separately by the IRD; the two are distinct identifiers serving different purposes.

A company that incorporates locally or earns Antigua-sourced income must register and obtain a TIN. An International Business Company operating entirely outside the jurisdiction, and a non-resident with no local-source income, generally have no compulsory registration obligation.

No official source confirms a set fee, and the number is typically free or subject to a small administrative charge. No published processing time exists; issuance follows verification of the documents by the IRD registration officer.

The TIN is the key identifier on CRS self-certification forms and FATCA reporting, and local banks share account information with foreign tax authorities under CRS. For U.S. persons, institutions collect the U.S. TIN alongside the Antigua and Barbuda number for reporting to the IRS.