IBAN country format

Austria IBAN Format, Length and Example

An Austrian IBAN is 20 characters: AT and 2 international check digits, followed by a 5-digit bank identifier and an 11-digit account number.

Use this guide to understand the IBAN country code for Austria, its 20-character length, and example formatting. The AT value below is a labeled Austrian format sample and must not be treated as a confirmed bank account.

Written and maintained by BankCodeKit. Page copy reviewed: 2026-08-16.

The compact AT61 bank and account split

The AT diagram places a five-digit bank identifier before the eleven-digit Austrian account number.

1. Country code 1-2; 2 letters
2. International check digits 3-4; 2 digits
3. Bank identifier 5-9; 5 digits
4. Account number 10-20; 11 digits

Synthetic AT example, not verified against a real account. The Austria blocks explain published character positions; they are not a live institution or account lookup.

Key Austria IBAN details

Country: Austria
Country code: AT
IBAN length: 20 characters
Print format: AT61 1904 3002 3457 3201
SEPA status: SEPA country - EU
BBAN structure: Austria: 16 digits after the country code and check digits.
Does not prove: Real account, owner, bank reachability, or payment success

A five-digit Austrian bank field before the account number

The Swift IBAN Registry pattern for this published format is AT2!n5!n11!n. The table for Austria maps each published segment to the AT611904300234573201 example/test value.

Austria IBAN positions and example segments
Part	Positions	Swift pattern	Example segment
Country code	1-2	2 letters	`AT`
International check digits	3-4	2 digits	`61`
Bank identifier	5-9	5 digits	`19043`
Account number	10-20	11 digits	`00234573201`

This AT breakdown describes visible positions; it does not turn the embedded bank or routing fields into a live Austrian institution lookup.

Reading all 20 characters of AT61

The synthetic/test AT value demonstrates the published Austrian layout. Preserve its label and never treat the sample as a recipient's real payment instruction.

Example/test IBAN: AT611904300234573201
Print format example: AT61 1904 3002 3457 3201
Digital format example: AT611904300234573201

Format-checking boundary

Austria example values: Every AT value on this page is a synthetic or educational format sample, not a confirmed account or payment instruction.

AT format scope: A pass covers the visible country code, length, characters, and checksum rules for this published format. Account existence, ownership, bank reachability, sanctions status, fraud risk, and payment success remain outside the result.

Local Austrian review: BankCodeKit evaluates the displayed AT structure in your browser without querying Austrian banks, account directories, or payment networks.

Before using an Austrian IBAN: Confirm the beneficiary and complete instruction with the invoice issuer, recipient, bank, or payment provider. Structural consistency alone is not payment approval.

Review local processing and the detailed disclaimer for the full boundaries.

The numeric Austrian BBAN in two parts

The value starts with AT, the IBAN country code for Austria.
The next two characters are international check digits.
For Austria, the remaining 16 characters form the country-specific BBAN section: 16 digits after the country code and check digits.
Austrian IBANs use a 20-character structure with a numeric BBAN in the example shown here.
Because the value is mostly digits after AT, missing or transposed digits are the most common copy issue.

Moving from grouped AT text to compact input

Compare the grouped invoice-style value used for Austria with the compact AT input produced after presentation spaces are removed.

Input shown on page: AT61 1904 3002 3457 3201
Normalized digital value: AT611904300234573201
Expected length: 20 characters
Result interpretation: A passing AT result means the visible value matched supported Austrian structure and MOD97 rules, not that the account or payee was verified.

Transposed digits in an all-numeric AT value

Dropping a digit when moving from grouped print format to a compact form field.
Treating a passed checksum as confirmation that the Austrian payee details are correct.

What the Austrian MOD97 result says

Whether the IBAN starts with the AT country code.
Whether the IBAN has 20 characters after normalization.
Whether the value uses allowed letters and digits.
Whether the MOD97-10 checksum is valid.

Fixed bank and account widths in Austria

Austria uses a 20-character IBAN. The Swift IBAN Registry describes the 16-digit Austrian BBAN as a five-digit bank identifier followed by an eleven-digit account number. The BBAN is numeric, so letters after the AT country code and international check digits are not expected in this national format. The bank identifier is already embedded in the IBAN and should stay in place when a print-formatted value is converted to the compact form used by payment software.

A practical Austrian review should remove spaces only and then confirm that the value still has all 20 characters. Leading zeroes in the account number are significant, even if a spreadsheet or document editor tries to hide them. Numeric strings also make transposed digits difficult to notice visually. Compare the original print groups with the compact value before running MOD97-10. A failed checksum identifies an inconsistency, but BankCodeKit cannot infer the intended digit or repair payment instructions on the user's behalf.

Do not merge an Austrian IBAN with the BIC, customer number, invoice identifier, or payment reference that may be printed nearby. The five-digit bank segment is structural data and is not queried against a live Austrian bank directory. BankCodeKit cannot establish account status, payee ownership, supported currency, or provider acceptance. If an invoice changes the beneficiary account, verify the new instruction through a known contact route before payment. Passing length and checksum rules is useful for data entry, but it is not an authorization or safety decision.

When the twenty-character Austrian length helps

Checking Austrian invoice details before entering the compact AT value into a payment form.
Explaining why spaces can be removed without changing the underlying IBAN.
Use the IBAN Checker after this country reference for Austria when you need a local MOD97 result for one AT value.

Austria in the SEPA country reference

For Austria, the local SEPA country reference is: SEPA country - EU. The AT entry provides geographical scope only; participation by a particular Austrian bank or account must be confirmed separately.

Questions about AT length and spacing

How long is an Austrian IBAN?

An Austrian IBAN has 20 characters.

What country code does an Austrian IBAN use?

Austrian IBANs use the country code AT.

Can spaces be used in Austrian IBAN print format?

Yes. Print format commonly groups characters for readability.

Does the checksum check confirm the payee?

No. A checksum check does not confirm the payee or account owner.

Austria sources and update note

Public references for Austrian IBAN structure and national fields are linked below; detailed standard scope, review methods, and licensing boundaries are documented on the Sources and Updates page.

Scope and limitations.

IBAN lengths, 15 national patterns and examples. Reference data reviewed: 2026-10-01. Next scheduled data review: 2027-01-01. BIC visible-format references. Reference data reviewed: 2026-07-17. Next scheduled data review: 2026-10-17. SEPA geographical scope and currency reference. Reference data reviewed: 2026-10-01. Next scheduled data review: 2027-01-01. Additional source links verified: 2026-08-15. Sources: Swift IBAN Registry, European Payments Council SEPA scheme countries list, Oesterreichische Nationalbank - IBAN and BIC Reference data is reviewed periodically. BankCodeKit does not perform live bank, account, sanctions, or payment-network confirmation.