What causes "Invalid IBAN Checksum"?

Typing mistake when entering the IBAN. Digits were transposed (swapped). A digit was accidentally added or removed. The IBAN was copied incorrectly

How do I fix "Invalid IBAN Checksum"?

Double-check each character against the original source. Verify the IBAN with your bank statement or card. Request the correct IBAN from the recipient. Use copy-paste instead of manual entry

Invalid IBAN Checksum

The IBAN check digits (positions 3-4) do not match the calculated checksum using the MOD-97 algorithm. This means the IBAN contains an error.

Common Causes

Typing mistake when entering the IBAN
Digits were transposed (swapped)
A digit was accidentally added or removed
The IBAN was copied incorrectly

How to Fix It

1 Double-check each character against the original source
2 Verify the IBAN with your bank statement or card
3 Request the correct IBAN from the recipient
4 Use copy-paste instead of manual entry

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Other IBAN Errors

Wrong IBAN Length Invalid Country Code Invalid Characters in IBAN Invalid Bank Code IBAN Rejected by Bank