Austrian Steuernummer
Generator
Generate a valid Austrian Steuernummer (Abgabenkontonummer) from the Ministry of Finance (BMF) that passes the official Luhn checksum — entirely in your browser.
About Austria Steuernummer
The Steuernummer (also known as Abgabenkontonummer) is the tax identification number issued by the Austrian Tax Office (Finanzamt Österreich / BMF) to individuals and corporations.
It is essential for filing income tax (Einkommensteuer), corporate tax (Körperschaftsteuer), and accessing the FinanzOnline portal.
Steuernummer / Abgabenkontonummer Anatomy
| Position | Field | Length | Meaning & Rule | Example |
|---|---|---|---|---|
| 1 and 2 | Tax Office Code | 2 digits | Code of the issuing tax authority (Finanzamtsnummer) | 59 |
| 3 to 5 | Taxpayer Part 1 | 3 digits | First block of the tax account number | 119 |
| 6 to 8 | Taxpayer Part 2 | 3 digits | Second block of the individual account sequential | 901 |
| 9 | Check Digit | 1 digit | Control digit calculated using the Luhn Modulo 10 algorithm | 3 |
Computation Algorithm (Luhn Modulo 10)
| Step | Description |
|---|---|
| 1. Weight the odd positions | Digits at positions 2, 4, 6, 8 (1-indexed) are doubled; if the product is 10 or more, its digits are summed. |
| 2. Keep the even positions as-is | Digits at positions 1, 3, 5, 7 (1-indexed) are used with a weight of 1. |
| 3. Sum all weighted values | Compute the total sum of all eight weighted values. |
| 4. Take the complement of 10 | The check digit is (10 − (Sum mod 10)) mod 10. |
Frequently Asked Questions (FAQ)
What is the difference between Steuernummer and UID (ATU)?
The Steuernummer (Abgabenkontonummer) is the taxpayer's general account number with their local Finanzamt, used for income and corporate tax. The UID (ATU) is a separate, specifically EU-facing VAT identification number used for cross-border trade — a business typically has both.
How is the Austrian Steuernummer formatted?
It's commonly displayed with separators as [office]-[block1]/[block2+check], e.g. 59-119/9013, where 59 is the Finanzamt code, 119 and 901 are the two account blocks, and 3 is the Luhn check digit — though systems often accept the plain unformatted 9-digit sequence too.
Are the generated numbers official or real?
No. The numbers generated here are synthetic test data that satisfy the official Luhn checksum used by the Steuernummer format, for software development and QA testing only. They are not issued by the BMF, are not linked to any real taxpayer, and must never be used on real tax filings.