Antigua and Barbuda Tax ID Number (TIN) Guide 

Introduction 

In Antigua and Barbuda, the Tax Identification Number (TIN) is a unique identifier assigned to individuals, businesses, and legal entities for tax purposes. Possessing the correct TIN is crucial for ensuring compliance with national tax regulations. All information presented here is verified from official sources, including the Inland Revenue Department (IRD) of Antigua and Barbuda. 

Tax Identification Number Types 

Antigua and Barbuda uses the following official types of TINs: 

• Taxpayer Identification Number (TIN): A unique number issued to all registered taxpayers in Antigua and Barbuda. It is used by individuals, businesses, and legal entities. 

TIN Format and Structure 

• TIN: The TIN in Antigua and Barbuda typically consists of numeric digits and follows the format defined by the IRD. While there is limited public documentation about the precise structure, TINs are generally unique 9-digit numbers used for taxpayer identification. 

Issuing Authority and Registration Process 

The Inland Revenue Department (IRD) is the official body responsible for issuing TINs in Antigua and Barbuda. 

Official Website: https://www.ab.gov.ag 

Registration Process: 

1. Eligibility Requirements: 

1. All individuals earning income in Antigua and Barbuda. 

2. All entities conducting business within the country. 

2. Required Documents: 

1. For individuals: National ID or passport. 

2. For businesses: Business registration certificate, ID of the representative. 

3. Application Process: 

1. Fill out the TIN application form (available from the IRD). 

2. Submit in person at the IRD office. 

3. There is currently no public online application process. 

4. Fees: 

1. Typically free or subject to a small administrative fee. 

TIN Verification and Lookup 

To verify a TIN, individuals and businesses can use the official online verification tool provided by the Inland Revenue Department. Access to the verification tool is available through the Inland Revenue Department’s official website. 

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TIN and VAT Number Connection 

As of the current tax framework, Antigua and Barbuda does not operate under a Value Added Tax (VAT) regime. Therefore, TINs are not used as VAT numbers. 

Why Accurate TIN Validation Matters 

Ensuring the accuracy of your TIN is critical for both businesses and individuals in Antigua and Barbuda. An incorrect or unverified TIN can lead to serious complications such as: 

• Delays in tax processing 

• Rejection of tax exemption claims 

• Fines and penalties for non-compliance 

• Onboarding unqualified suppliers or customers 

• Data quality issues across finance and compliance systems 

Using the Inland Revenue Department or TaxDo real-time global tax ID verification platform ensures accurate Tax ID validation, error reduction, and full compliance with Antigua and Barbuda’s tax laws. 

Stay Compliant with TaxDo 

While the Inland Revenue Department offers verification tools, TaxDo takes TIN validation to the next level with real-time results, periodic revalidation for ongoing compliance, and seamless integration into your systems. 

With TaxDo, you can automate Tax ID validation, monitor changes, and ensure continuous compliance—all from a single, user-friendly dashboard or through API connectivity. 

TaxDo is trusted by leading enterprises, platforms, and compliance teams worldwide. Try it now and eliminate the risks of Tax ID errors in Antigua and Barbuda and beyond.