Lithuania Tax ID Number (TIN) Guide 

In Lithuania, the Tax Identification Number (TIN) is a unique identifier assigned to individuals and entities for tax purposes. Possessing the correct TIN is essential for ensuring compliance with Lithuanian tax regulations for both individuals and businesses. All information presented in this guide has been verified using official tax authority websites and trusted government sources. 

Tax Identification Number Types 

In Lithuania, the primary form of TIN is the Personal Code (Asmens kodas), which serves as the tax identification number for individuals. This 11-digit code is used across various official documents, including passports, ID cards, and driving licenses . For legal entities, the TIN is typically the company code assigned upon registration with the Register of Legal Entities. 

TIN Format and Structure 

Individuals 

• Format: 11 digits (e.g., 39001010001) 

• Structure: 

• First Digit: Indicates the person’s gender and century of birth: 

• 1: Male born 1800–1899 

• 2: Female born 1800–1899 

• 3: Male born 1900–1999 

• 4: Female born 1900–1999 

• 5: Male born 2000–2099 

• 6: Female born 2000–2099 

• Next Six Digits: Represent the individual’s birth date in the format YYMMDD. 

• Following Three Digits: A serial number differentiating individuals born on the same date. 

• Last Digit: A check digit used for validation purposes . 

Legal Entities 

• Format: 9 or 12 digits 

• Structure: A unique sequence assigned upon registration with the Register of Legal Entities. 

Issuing Authority 

The State Tax Inspectorate (Valstybinė mokesčių inspekcija or VMI) under the Ministry of Finance is responsible for tax administration in Lithuania. More information can be found on their official website: https://www.vmi.lt. 

Registration Process 

For Individuals: 

• Citizens: The Personal Code is assigned at birth and is included in official identification documents. 

• Foreign Residents: Non-citizens residing in Lithuania can obtain a Personal Code by applying to the Population Register Service at A. Vivulskio str. 4A, Vilnius. Contact: phone-fax +370 52507811, email – [email protected] . 

For Legal Entities: 

1. Name Reservation: Choose and reserve a unique company name. 

2. Prepare Documentation: Draft and notarize the Articles of Association. 

3. Submit Application: Provide the necessary documents, including identification for shareholders and directors, proof of registered office address, and bank reference letters, to the Register of Legal Entities. 

4. Obtain TIN: Upon successful registration, the company is assigned a unique company code, which serves as its TIN . 

TIN Verification and Lookup 

Currently, Lithuania does not offer an online tool for real-time TIN verification. For inquiries regarding TINs, individuals and businesses can contact the Population Register Service at the details provided above. Or Instantly Verify Tax IDs in Lithuania with TaxDo Real-Time TIN Validation Platform 

TaxDo offers a compliant, automated, and globally trusted solution for TIN verification—not just in Lithuania, 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 Lithuania 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 Lithuania, TaxDo helps you avoid risks, delays, and penalties with effortless global Tax ID validation. 

📩 Get started today or schedule a free demo to see how TaxDo simplifies tax compliance. 

TIN and VAT Number Connection 

In Lithuania, the TIN for legal entities also serves as the VAT identification number. The VAT number format includes the prefix ‘LT’ followed by the 9-digit company code (e.g., LT123456789). For certain entities, a 12-digit format is used (e.g., LT123456789012) . 

Why Accurate TIN Validation Matters 

Ensuring the accuracy of your TIN is critical for both businesses and individuals in Lithuania. 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 Lithuania Valstybinė mokesčių inspekcija or TaxDo real-time global tax ID verification platform ensures accurate Tax ID validation, error reduction, and full compliance with Lithuania tax laws. 

Stay Compliant with TaxDo 

While the Valstybinė mokesčių inspekcija offers a basic PIN checker, TaxDo takes Lithuania 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 Lithuania and beyond.