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TIN Check for more than 140 countries


Bulgaria Bulgaria
Official country information

TIN validation guidance for Bulgaria

Access country-specific reference information, recognised formats and validation resources designed for compliance teams, finance departments and enterprise operations.

TIN Check Bulgaria (BG)

In Bulgaria, the Taxpayer Identification Number TIN for individuals is designated by Unified Civil Number (UCN) for Bulgarian citizens, for Foreign citizens who receive permission for long-term or permanent residence in Bulgaria and for the other foreign citizens resident for tax proposes the TIN is the official number.

For entities, there are 3 kind of TINs, the Unified identification Code (UIC), the UIC assigned to branches of resident companies and the official number from NRA’s register.

To validate a tax identification number from Bulgaria, the TIN / UCN / UIC / official numbers for NRA’s must be placed on top of it, which must obey the following format:


For Individuals

The TIN /UCN may assume the following format: • NNNNNNNNNN (Total of 10 digits)

N identifies that it must be a numeric digit.


For Entities

The TIN / UIC / official numbers for NRA’s may assume the following 3 formats:

• NNNNNNNNN (UIC with total of 9 digits)
• NNNNNNNNNNNNN (UIC with total of 13 digits)
• 307NNNNNNN (official numbers for NRAs with a total of 10 digits)

N identifies that it must be a numeric digit.
307 identifies that the 1st three digits are 307.

After validation, additional information on the TIN / UCN / UIC/ official numbers for NRA’s introduced will be made available.

Reference formats

Official example structures

Use the following examples as guidance for commonly recognised tax identification formats.

Individual
Entity

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banks

Banks

Used to support identity, compliance and tax data validation in financial onboarding processes.
trading applications

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billing softwares

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e-commerce

E-Commerce

Accelerates order capture and reduces manual tax identification handling in online sales operations.
trading companies

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Useful for cross-border supplier, client and partner tax identity verification workflows.
tax authorities

Tax Authorities

Supports structured reference and validation processes in public-sector and fiscal administration contexts.
tincheck dashboard
Operational management

Manage validation activity with a more professional dashboard experience

The TIN Check dashboard has been designed to offer a cleaner and more reliable operational interface for recurring validation needs. It supports organised usage, clearer workflows and a more suitable environment for business teams handling customer, supplier or compliance data.

For organisations requiring repeat validations, account-based access provides a more controlled and scalable experience.

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Reference articles and country guidance

Explore selected country-specific content to better understand regional tax identification practices and documentation contexts.

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Tax ID Number in the United States

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VAT Number in the United Kingdom

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Security and reliability

Designed with security-conscious workflows in mind

TIN Check applies layered controls to support a safer validation environment for business users. The platform is structured to operate with modern protection measures, controlled access paths and secure handling expectations suitable for professional usage.

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