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Germany Steuer-ID Generator

Germany

Generate valid German Steueridentifikationsnummer (Steuer-ID) numbers for testing purposes. These 11-digit tax identification numbers follow the official format with check digit validation.

Validate Steuer-ID

About Steuer-ID

  • •The Steueridentifikationsnummer (Steuer-ID) is an 11-digit tax identification number
  • •Introduced in 2008, it's assigned at birth and remains valid for life
  • •First digit is never 0; contains exactly one repeated digit (once)
  • •Last digit is a check digit calculated using a modified modulo-11 algorithm
  • •Used for income tax, wage tax, and communication with tax authorities

Format Details

XX XXX XXX XXXDisplay Format
Digits 1-10Unique identifier
Digit 11Check digit
RuleExactly one digit appears twice, others unique

API Access

Generate German Steuer-IDs programmatically via our REST API:

# Generate a single Steuer-ID
GET
https://gentools.io/api/v1/germany/steuer-id
# Generate multiple Steuer-IDs
GET
https://gentools.io/api/v1/germany/steuer-id?count=10
Response:
{
  "steuerId": "12345678903",
  "formatted": "12 345 678 903"
}
View full API documentation
Disclaimer: These generated Steuer-IDs are for testing and development purposes only. They follow the correct format and checksum algorithm but are not real tax identification numbers. Do not use for any official or fraudulent purposes.