Generate a test Germany Steuerliche Identifikationsnummer
The German tax ID (Steuer-IdNr) is eleven digits formatted NN NNN NNN NNN, never starting with 0, with an ISO 7064 MOD 11,10 check digit. These test values are synthetic but checksum-valid.
Synthetic · not collision-guaranteed Validate a number →
60 599 267 499
Synthetic German Steuer-IdNr (checksum-valid). Not issued by a Finanzamt.
Format specification
| Identifier | Steuerliche Identifikationsnummer (Steuer-IdNr) |
|---|---|
| Country | 🇩🇪 Germany |
| Format | NN NNN NNN NNN |
| Length | 11 characters |
| Checksum | ISO 7064 (MOD 11,10) |
| Example | 72 913 633 531 |
| Safe strategy | Synthetic |
| Data quality | Best-effort |
Validation regex
Matches the canonical value — strip separators and uppercase first: value.replace(/[^A-Za-z0-9]/g, '').toUpperCase()
^[1-9]\d{10}$ References
Common questions
Will these pass my validation?
Yes — they are well-formed Steuerliche Identifikationsnummer values (NN NNN NNN NNN) and pass standard format checks, including the ISO 7064 (MOD 11,10) checksum.
Could one belong to a real person?
These are synthetic values. They are format-valid but not drawn from a guaranteed reserved range, so use them only for testing.
Can I generate many at once?
Increase the count, or use the free API and CSV/JSON export for large datasets.
For software testing only. These numbers are synthetic and must never be used
for real-world identification, applications, or to impersonate anyone.