General Ledger Account Code Regex for Go

What this pattern does

This page provides a lightweight, single-purpose regular expression for matching general ledger account code, ported and verified for Go. 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 Go project — whether you're validating in a Gin handler, a gRPC service, or a command-line tool.

Go Implementation

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

package validation

import "regexp"

var generalLedgerAccountCodeRe = regexp.MustCompile(`^[0-9]{4,8}(?:-[0-9]{2,6})?$`)

func ValidateGeneralLedgerAccountCode(s string) bool {
    return generalLedgerAccountCodeRe.MatchString(s)
}

// Example
// fmt.Println(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 Go developers because Go's RE2 engine is inherently safe from catastrophic backtracking, but this pattern has been additionally verified for correctness. 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.