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Identity
en-US
#ein
#us
#tax
#employer

US Employer Identification Number (EIN)

Matches a US EIN (Federal Tax ID) in the NN-NNNNNNN format used by the IRS.

✓ Business tax forms✓ Contractor onboarding✓ Invoice validation
/
/
Safe
Test String
3 matches
\d{2}digit— \d — digit (0–9) — repeated exactly 2 times · {2} — exactly 2 times
--— '-' — literal character
\d{7}digit— \d — digit (0–9) — repeated exactly 7 times · {7} — exactly 7 times
Pattern: 11 charsInput: 32 chars
100% client-side · private

✓ Valid Examples

  • 12-3456789
  • 99-9999999
  • 01-0000001

✗ Invalid Examples

  • 123-456789
  • 1-23456789
  • 12-345678

Usage & Integration

Validate US Employer Identification Number (EIN) natively in your backend or frontend without copying regex strings.

Node / Edge

import { validate } from '@regexto/validators';

validate('us-ein', '...');

Python

from regexto_validators import validate

validate("us-ein", "...")

Go

import "github.com/regex-to/validators-go"

valid, err := validators.Validate("us-ein", "...")

PHP

use RegexTo\Validators\Validator;

Validator::validate('us-ein', '...');

Rust

use regexto_validators::validate;

let is_valid = validate("us-ein", "...").unwrap();