General Ledger Account Code Regex for JavaScript

What this pattern does

This page provides a lightweight, single-purpose regular expression for matching general ledger account code, ported and verified for JavaScript. Financial data validation has zero tolerance for false negatives — a missed invalid entry can corrupt downstream calculations. The snippet below is ready to drop into your JavaScript project — whether you're validating in an Express middleware, a Next.js API route, or a client-side form.

Javascript Implementation

// General Ledger Account Code
// ReDoS-safe | RegexVault — Finance > Financial Formats

const generalLedgerAccountCodeRegex = /^[0-9]{4,8}(?:-[0-9]{2,6})?$/;

function validateGeneralLedgerAccountCode(input: string): boolean {
  return generalLedgerAccountCodeRegex.test(input);
}

// Example
console.log(validateGeneralLedgerAccountCode("1000")); // true

Test Cases

When to use this pattern

This pattern is drawn from the Finance > Financial Formats category and carries a ReDoS-safe certification. That matters for JavaScript developers because especially critical in long-running Node.js event loops where a ReDoS vulnerability can block the entire process. RegexVault audits patterns against known backtracking attack vectors, ensuring you have the necessary context before using this regex in a high-stakes production environment.

Common Pitfalls

Technical Notes

GL account structures vary: SAP uses up to 10 digits, QuickBooks uses 5. The department/cost center suffix is common for segment reporting. Ranges: 1xxx=assets, 2xxx=liabilities, 3xxx=equity, 4xxx=revenue, 5-9xxx=expenses.