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Free Bank Account Format Checker

Sanity-check a list of bank account numbers for payroll files: digit-only, expected length, duplicates, and lost leading zeros.

By ERPat Payroll Team Version 1.0.0 Last Reviewed 2026-06-24 0 0 0

Calculator

Account Numbers (one per line, or "Name, Account") *

Minimum digits

Set to your bank's expected account-number length.

Maximum digits

Allow spaces / dashes

• Each line is checked: digit-only (after optionally stripping spaces/dashes), length within your min–max, duplicate account numbers, and a lost-leading-zero hint when a value is all-digit but shorter than expected.
• Generic check only — it does not encode any specific bank's numbering rules. Set the expected length and confirm against your bank's file spec.

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