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Spain TIN validator
Check whether a Spain NIF / NIE / CIF follows the expected structure before you save it, send it to an API, or include it in a tax workflow.
Private by design
Your data stays in your browser
None of the TIN data you enter is ever saved to our servers — validation runs entirely on your device.
Validation Workspace
Validate NIF / NIE / CIF
Enterprise checks for Spain tax identification numbers.
Instant one-by-one format validation
How Spain tax IDs are formatted
In Spain, the tax identifier is commonly known as Número de Identificación Fiscal (NIF / NIE / CIF). The expected format is 8 digits + 1 letter (NIF), or letter + 7 digits + letter (NIE). Teams usually need a Spain NIF / NIE / CIF check around tax declarations, employment, property purchases, or before a record moves into billing, onboarding, or compliance review.
Valid examples
12345678ZX1234567L
Invalid examples
- 12345678A (Invalid check letter)
- X123456 (Too short)
What this validator checks
Format and length
Confirms the number follows the expected Spain pattern: 8 digits + 1 letter (NIF), or letter + 7 digits + letter (NIE).
Useful examples
Shows valid and invalid-looking samples so you can compare spacing, separators, letters, and digit counts before submitting real data.
Letter placement
Checks letter positions where the NIF / NIE / CIF format requires alphabetic prefixes, suffixes, or program identifiers.
When people usually check this number
- Tax declarations
- Employment
- Property purchases
- Banking
A format match does not prove that a Spain tax ID belongs to a specific person or business. Use the result as a first-pass data quality check, then confirm sensitive cases with official records.
Official source: Agencia Tributaria
Last reviewed: May 23, 2026. We update country guidance when public format rules change.
How to check a Spain NIF / NIE / CIF
Use this check before a record reaches billing, tax reporting, or manual review.
Enter the NIF / NIE / CIF
Paste or type the Spain tax identifier exactly as it appears in your source record. Spaces and separators are fine when they are part of the expected format.
Review the format result
Check whether the number matches the known Spain structure, including length, separators, letters, and checksum rules where public guidance includes them.
Confirm important records
For onboarding, tax reporting, or compliance work, treat the result as a data-quality signal and confirm high-risk records with Agencia Tributaria or your internal process.
Frequently asked questions
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