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Country guide

Austria

Austria's main domestic TIN is the 9-digit Steuernummer. Businesses can also hold an Austrian UID for VAT purposes, and that UID is included here because current Austrian DPMG/DAC7 guidance uses it for Austrian platform operators, with the Steuernummer as fallback.

AT AUT 2 TIN types Last reviewed 2026-04-19

TIN types

2 published formats. Open a type to see examples, structure details, and official sources.

Validate Austria TIN
Austrian Tax Number (Steuernummer / Abgabenkontonummer)
Current Individuals Entities

Finanzamt (Tax office)

Nine-digit domestic tax number used by the Austrian tax administration for taxable persons and entities. In payment contexts it is also referred to as the Abgabenkontonummer.

Details
Examples
26-913/5729
Where to find it

On tax assessments and other written notices from the tax office, and in FinanzOnline under "Grunddaten zur Steuernummer".

Common names
Steuernummer Abgabenkontonummer
Structure
1-2 Tax office code Administrative prefix based on the tax office number recorded when the number was issued.
3-8 Serial Core tax-account number.
9 Check digit Control digit.
Official source
oecd.org bmf.gv.at finanzonline.bmf.gv.at ebics.psa.at
Austrian VAT Identification Number (UID / Umsatzsteuer-Identifikationsnummer)
Current Individuals Entities

Finanzamt (Tax office)

VAT identification number used in the entrepreneurial sphere. It is included here because Austrian DPMG/DAC7 guidance uses the UID as the normal identifier for Austrian platform operators, with the Steuernummer as fallback when no UID exists.

Details
Examples
ATU10223006
Where to find it

On the UID assignment notice and on communications from the competent VAT tax office.

Common names
UID UID-Nummer Umsatzsteuer-Identifikationsnummer
Structure
1-2 Country code Austria's country code.
3 UID marker Fixed letter identifying the Austrian UID format.
4-10 Serial Core identifier digits.
11 Check digit Control digit.
Official source
bmf.gv.at usp.gv.at