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Germany TIN validator
Check whether a Germany Steuer-ID 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 Steuer-ID
Enterprise checks for Germany tax identification numbers.
Instant one-by-one format validation
How Germany tax IDs are formatted
In Germany, the tax identifier is commonly known as Steueridentifikationsnummer (Steuer-ID). The expected format is 11 digits (XX XXX XXX XXX), validated with mod-11 checksum. Teams usually need a Germany Steuer-ID check around steuererklärung (tax return), lohnsteuerbescheinigung, banking, or before a record moves into billing, onboarding, or compliance review.
Valid examples
86 095 742 71947 036 892 816
Invalid examples
- 12 345 678 901 (Failed checksum)
- 86 095 742 71 (Too short)
What this validator checks
Format and length
Confirms the number follows the expected Germany pattern: 11 digits (XX XXX XXX XXX), validated with mod-11 checksum.
Checksum logic
Runs the checksum rule used by Germany when the public format includes one, helping catch typos that still look correctly formatted.
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
- Steuererklärung (tax return)
- Lohnsteuerbescheinigung
- Banking
- Employment
A format match does not prove that a Germany 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: Bundeszentralamt für Steuern
Last reviewed: May 23, 2026. We update country guidance when public format rules change.
How to check a Germany Steuer-ID
Use this check before a record reaches billing, tax reporting, or manual review.
Enter the Steuer-ID
Paste or type the Germany 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 Germany 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 Bundeszentralamt für Steuern or your internal process.
Frequently asked questions
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