EIN (Employer Identification Number)
Business · Reinvent NY glossary
An EIN is a 9-digit number assigned by the IRS to identify business entities for tax purposes — essentially a Social Security Number for businesses. Required for opening business bank accounts, filing tax returns, hiring employees, and applying for business licenses. US-based applicants can obtain an EIN online instantly (IRS Form SS-4). Foreign applicants without an SSN or ITIN must apply by fax or mail, with processing taking 4-6 weeks. The EIN is free — beware of third-party websites charging fees for this service.
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