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Brazil TIN validator
Check whether a Brazil CPF / CNPJ 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 CPF / CNPJ
Enterprise checks for Brazil tax identification numbers.
Instant one-by-one format validation
How Brazil tax IDs are formatted
In Brazil, the tax identifier is commonly known as Cadastro de Pessoas Físicas / Cadastro Nacional da Pessoa Jurídica (CPF / CNPJ). The expected format is CPF: 11 digits (XXX.XXX.XXX-XX), CNPJ: 14 digits (XX.XXX.XXX/XXXX-XX). Teams usually need a Brazil CPF / CNPJ check around tax filing, banking, employment, or before a record moves into billing, onboarding, or compliance review.
Valid examples
123.456.789-0912.345.678/0001-95
Invalid examples
- 123.456.789-00 (Invalid check digits)
- 12.345.678/0001 (Incomplete)
What this validator checks
Format and length
Confirms the number follows the expected Brazil pattern: CPF: 11 digits (XXX.XXX.XXX-XX), CNPJ: 14 digits (XX.XXX.XXX/XXXX-XX).
Useful examples
Shows valid and invalid-looking samples so you can compare spacing, separators, letters, and digit counts before submitting real data.
When people usually check this number
- Tax filing
- Banking
- Employment
- Legal contracts
A format match does not prove that a Brazil 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: Receita Federal
Last reviewed: May 23, 2026. We update country guidance when public format rules change.
How to check a Brazil CPF / CNPJ
Use this check before a record reaches billing, tax reporting, or manual review.
Enter the CPF / CNPJ
Paste or type the Brazil 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 Brazil 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 Receita Federal or your internal process.
Frequently asked questions
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