TIN Check

TIN Check Thailand

Check here if the TIN number is valid for Thailand

Thailand Thailand
Official country information

TIN validation guidance for Thailand

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

TIN Check Thailand


For individuals / entities:

The Revenue Department of Thailand has recently announced a new regulation whereby tax payers will be required to use a new 13-digit Tax ID, instead of the current 10-digit numbers. Guidelines given are as follows: Personal income tax payers are to use the Identification Number issued by the Ministry of Interior as their Tax ID number. Juristic persons incorporated or licensed by the Ministry of Commerce are to use the registration number issued by the Ministry of Commerce as their Tax ID number. Other tax payers are to use a 13-digit Tax ID number issued by the Revenue Department. Use of the 13-digit Tax ID numbers is effective from 1 February 2012, and is to be used for tax return filing, tax payment, withholding deduction and remittance, and in all other contact with the Revenue Department and tax documentation. However, withholding tax certificates, tax invoices, receipts and invoices which have already been prepared using a 10-digit Tax ID number can continue to be used until 31 January 2013.

Format:

The TIN consists of 13/15 digits


Reference formats

Official example structures

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

Individual
Entity

Trusted by professional and regulated sectors

The TIN Check ecosystem supports workflows where verification quality, auditability and speed are essential.

banks

Banks

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

Trading Applications

Supports tax identifier validation in digital investment, brokerage and trading environments.
billing softwares

Billing Software

Improves customer registration, invoicing accuracy and fiscal data consistency.
e-commerce

E-Commerce

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

Trading Companies

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 professional dashboard experience

The TIN Check dashboard supports organised usage, clearer operational workflows and a more suitable environment for business teams handling customer, supplier or compliance data.

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

Learn more about secure access →

Reference articles and country guidance

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

United States tax id number

Tax ID Number in the United States

General guidance regarding the role and use of tax identification records in the United States.

United Kingdom VAT number

VAT Number in the United Kingdom

Introductory information regarding VAT registration references and UK business identification use cases.

Security and reliability

Designed for security-conscious business workflows

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

More information