Property	Value
A technical identifier, unique in a certain context. Technical key	`TW_BRN`
The country a linked concept is active or generally relevant for. Country scope	TW (Taiwan)
Language-specific name. Monolingual name	Business Administration Number (en), 統一編號 (zh)
Language-specific short name. Monolingual short name	TW - Taiwan Business Reg. Num. (en)
Informal and comprehensive human-readable definition of a concept. Description	The Business Administration Number (BAN), also known as the Uniform Business Number (UBN), is an 8-digit number used to uniquely identify registered businesses in Taiwan for tax and administrative purposes. It serves as the equivalent of a VAT number in Taiwan, as the country does not issue a separate VAT identifier. The BAN is required for business registration, tax filings, and issuing Government Uniform Invoices (GUIs), which are part of Taiwan's VAT system. The format of the BAN is: 8 digits, where the first seven digits are the main identifier, and the eighth digit is a check digit for validation. Businesses use the BAN for VAT-related activities, including taxable sales reporting and issuing VAT-compliant invoices, making it the core identifier in Taiwan's VAT framework. While Taiwan's system doesn't explicitly call it a VAT number, the BAN fulfills this function in practice.
Category of business identifiers. Identifier category	VAT Number

Formal definition

Details	Informal and comprehensive human-readable definition of a concept. Description	The type in terms of a categorization of regular expressions. Regular expression type	TThe formal expression of a regular expression. Regular expression
0000000000AXJEYW6YVGQ2SR37	Specifies the allowed formats for the Business Administration Number (Taiwan)	`IDENTIFIER_FORMAT`	^\d{8}$

Data quality rules