# Iceland Tax ID Number ( TIN) Guide

> Comprehensive guide on Iceland's Kennitala format, registration procedures, and official verification methods for tax compliance.

Source: https://taxdo.com/resources/global-tax-id-validation-guide/iceland

Last updated: 2025-06-30

##   **Introduction**

In Iceland, the Tax Identification Number (TIN) is referred to as the **Kennitala**. This unique identifier is essential for individuals, businesses, and legal entities to ensure compliance with Icelandic tax regulations. All data presented in this guide is 100% verified from official tax authority websites and trusted government sources, particularly **Registers Iceland (Þjóðskrá Íslands)**, the official body responsible for assigning the Kennitala.

## **Tax Identification Number Types**

In Iceland, the **Kennitala** is the primary TIN, used for both individuals and entities:

- **Individuals**: The Kennitala is assigned to every resident of Iceland at birth or upon registration in the national registry.
- **Businesses and Legal Entities**: Upon registering a business or legal entity with the Icelandic authorities, a unique Kennitala is issued. This serves as the business’s tax identification number as well as its VAT number if applicable.

## **TIN Format and Structure**

The Kennitala consists of 10 digits, structured as follows:

- **Digits 1-6**: These represent the individual’s date of birth in the format DDMMYY.
- **Digits 7-9**: This section is a unique identifier assigned to the individual or entity.
- **Digit 10**: This is a checksum digit, calculated using the modulus 11 algorithm.

For example, a Kennitala may look like this: **120174-3389**, where “120174” corresponds to the birthdate (January 12, 1974), and “3389” is the unique identifier.

## **Issuing Authority and Registration Process**

The **Registers Iceland (Þjóðskrá Íslands)** is responsible for issuing the Kennitala. The official website of Registers Iceland is: [https://www.skra.is/english/](https://www.skatturinn.is/english/)

## **Registration Process:**

1. **Eligibility**: All residents, including foreign nationals residing in Iceland, are assigned a Kennitala upon registration.
2. **Required Documents**:  
  - A completed registration form.
  - Valid identification (passport or national ID).
  - Proof of residence in Iceland.
3. **Application Submission**:  
  - **Individuals**: Can register at Registers Iceland’s office or online.
  - **Businesses**: Must register through the Business Register available at [www.rsk.is](https://www.rsk.is/).
4. **Fees**: Generally, there are no fees for individuals, but businesses may incur nominal registration fees.

## **TIN Verification and Lookup**

Individuals and businesses can verify their Kennitala using the official tools provided by Registers Iceland. This verification is critical to ensure that the TIN is accurate and complies with Icelandic tax laws.

**Verification Tool**: [Registers Iceland – ID Numbers](https://www.skra.is/english/people/my-registration/id-numbers/)

**Or Instantly Verify Tax IDs in Iceland** **with [TaxDo Real-Time TIN Validation Platform](https://taxdo.com/services/tax-id-validator)** 

**TaxDo offers a compliant, automated, and globally trusted solution for TIN verification—not just in Iceland, but across 135+ jurisdictions.** Unlike other solutions, TaxDo validates tax IDs instantly and securely using only official government sources. 

**What Makes TaxDo Different?** 

- Real-time TIN verification for Iceland and 135+ countries
- Seamless API integration into your ERP, CRM, or onboarding system
- Powerful dashboard to manage and track tax ID validations globally
- Fully compliant and official-source-based results ONLY

Whether you’re conducting due diligence, onboarding clients, granting tax exemption, or managing vendor compliance in Iceland, **TaxDo helps you avoid risks, delays, and penalties with effortless global Tax ID validation.** 

## **TIN and VAT Number Connection**

In Iceland, the Kennitala serves as both the TIN and VAT number for entities registered for VAT. The format remains the same for both tax identification and VAT purposes. This dual usage streamlines the identification process for tax filings and business transactions.

For instance, if a company’s Kennitala is **0101995123456**, it would also be used as its VAT identification number.

## **Why Accurate TIN Validation Matters** 

Ensuring the accuracy of your TIN is critical for both businesses and individuals in Iceland. 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
- Rejection of e-invoicing submissions
- Onboarding unqualified suppliers or customers
- Data quality issues across finance and compliance systems

Using the Iceland Registers portal or **[TaxDo real-time global tax ID verification platform](https://taxdo.com/services/tax-id-validator)** ensures accurate Tax ID validation, error reduction, and full compliance with Iceland tax laws. 

## **Stay Compliant with TaxDo** 

While the Registers Iceland portal offers a basic PIN checker, **TaxDo takes Iceland** **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 Iceland and beyond.

## Frequently asked questions

### What is the Tax Identification Number (TIN) in Iceland?

In Iceland, the official Tax Identification Number is called the Kennitala. It is a unique 10-digit number used to identify both individuals and legal entities for taxation, registration, and financial operations. Individuals receive a Kennitala at birth or upon national registration. Businesses are assigned a Kennitala upon company formation. For automated TIN validation in Iceland, use TaxDo for real-time, government-sourced verification.

### What is the format of the Icelandic Kennitala?

The Kennitala is a 10-digit number with the following structure: First 6 digits: Birthdate or founding date in the format DDMMYY Next 3 digits: A unique sequence identifier Last digit: A checksum digit (using the Modulus 11 algorithm) Example: 120174-3389 This indicates a birthdate of January 12, 1974, with a unique ID and checksum. Validate your Kennitala instantly with TaxDo’s global tax ID verification platform, trusted across 135+ countries.

### How do I register or get a Kennitala in Iceland?

For Individuals: Issued By: Registers Iceland (Þjóðskrá Íslands) How: Automatically upon birth or immigration registration Requirements: ID, proof of residence, and completed form For Businesses: Where: Register at RSK Business Portal Documents Needed: Company details, legal representative ID Issued: During company registration TaxDo helps validate business TINs at scale, with secure integration into your ERP or onboarding workflows.

### Is the Icelandic TIN (Kennitala) also the VAT number?

Yes. In Iceland, the Kennitala functions as the VAT number for all registered businesses. There is no separate VAT ID format—this simplifies e-invoicing and tax reporting. Example: Kennitala / VAT ID: 010199-5123 (same number used for both purposes) Use TaxDo to verify if a business is VAT-registered in Iceland using its Kennitala.