Regex for US EIN (Employer ID)

Regex Pattern

^\d{2}-\d{7}$

US Employer Identification Number (XX-XXXXXXX)

Quick Answer

The regex pattern for us ein (employer id) is `^\d{2}-\d{7}$`. US Employer Identification Number (XX-XXXXXXX). This works in JavaScript, Python, Ruby, PHP, Java, and most regex engines that support PCRE syntax.

Test Examples

Input	Result
12-3456789	✓ Matches
00-1234567	✓ Matches
99-9999999	✓ Matches
123456789	✗ No match
12-345678	✗ No match
12-34567890	✗ No match

Code Examples

javascript

const regex = /^\d{2}-\d{7}$/;
const isValid = regex.test(value);

python

import re
pattern = r'^\d{2}-\d{7}$'
if re.match(pattern, value):
    print("valid")

ruby

pattern = /^\d{2}-\d{7}$/
if value =~ pattern
  puts "valid"
end

php

if (preg_match('/^\d{2}-\d{7}$/', $value)) {
    echo "valid";
}

java

String pattern = "^\\d{2}-\\d{7}$";
boolean isValid = value.matches(pattern);

Frequently Asked Questions

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