Route: What it is
What a tax identification number is
A tax identification number is an identifier used by a public authority to connect a person or an organisation to tax-related records. It is used for administration, reporting, and identity matching in official processes.
Why it exists
Tax systems need a consistent way to link declarations, payments, correspondence, and entitlements to the correct party. A tax identifier supports that linkage, even when names or addresses change.
- Helps administrations match records to the correct person or entity.
- Supports reporting and compliance processes where identity must be consistent.
- Reduces ambiguity when multiple people or entities share similar names.
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Who uses it
Tax identifiers are used by tax administrations, employers, banks, and regulated organisations where a tax-related identifier is required for reporting or account setup. The exact name varies by country and context.
Important limits
A format that looks correct does not prove an identifier is valid or active. This site explains concepts and structure only. It does not validate, query registries, or confirm status.