Denmark IBAN Format, Length and Example

The Danish BBAN ends with its own check digit

• The value starts with DK, the IBAN country code for Denmark.
• The next two characters are international check digits.
• The remaining 14 characters are the country-specific BBAN section: 14 digits after the country code and check digits: a 4-digit bank identifier, 9-digit account number, and 1 check digit.
• Danish IBANs are 18 characters long and use a numeric BBAN in the example shown here.
• The short length means extra digits from invoice references should be easy to catch.

Separating DK50 from nearby invoice references

For Denmark, compare the grouped invoice-style value with the compact DK input produced after presentation spaces are removed.

Input shown on page

DK50 0040 0440 1162 43

Normalized digital value

DK5000400440116243

Expected length

18 characters

Result interpretation

A passing DK result means the visible value matched supported Denmark structure and MOD97 rules, not that the account or payee was verified.

International and national checks in the Danish layout

• Whether the IBAN starts with the DK country code.
• Whether the IBAN has 18 characters after normalization.
• Whether the value uses allowed letters and digits.
• Whether the MOD97-10 checksum is valid.

How Denmark packs bank and account data into fourteen digits

Denmark uses an 18-character IBAN. The Swift IBAN Registry describes the 14-digit Danish BBAN as a four-digit bank identifier, a nine-digit account section, and one national check digit. The final national digit is part of the BBAN and is distinct from the two international check digits after DK. This fixed numeric structure means that letters inside the BBAN are not expected, while leading zeroes in either the bank or account portion must be preserved.

A Danish print value can be normalized by removing spaces, but no digits should be added to make it resemble a longer country's IBAN. Confirm the compact value has exactly 18 characters and compare the last group carefully with the source. Payment references are often shown close to account details, so copying the whole invoice line may append extra digits. MOD97-10 checks the international value as supplied. It does not separately certify the domestic account, identify a corrected digit, or validate an adjacent creditor reference.

The four-digit bank position is a technical part of the Danish format, not a live institution search. BankCodeKit does not contact a Danish bank or payment network and cannot confirm account activity, ownership, or scheme participation. Keep any BIC, beneficiary name, invoice identifier, and amount in their own fields. When a payee changes payment details, verify the update through a known contact route before sending money. A passed Danish format result is useful for catching data-entry mistakes, but it does not confirm payment readiness or success.

Extra invoice digits after a complete DK value

• Adding a reference number after the DK IBAN when copying an invoice line.
• Treating SEPA country context as proof that a specific Danish account can receive a payment.

Denmark in local SEPA country data

For Denmark, the local SEPA country reference is: SEPA country - EU. This Denmark country-level entry does not establish scheme support for a particular bank or account.

Using Denmark's short length as a copy check

• Checking a Danish IBAN before running a separate payee or payment-provider confirmation.
• Separating the compact DK value from invoice notes before validation.
• Use the IBAN Checker after this Denmark reference when you need a local MOD97 result for one DK value.

Questions about DK length and the final digit

Last reviewed: 2026-07-17 Sources: Swift IBAN Registry, European Payments Council SEPA scheme countries list Reference data is reviewed periodically. BankCodeKit does not perform live bank, account, sanctions, or payment-network confirmation.