EIN verification is a process through which businesses can verify the validity of a company's employee identification number. The EIN is an IRS requirement for tax-exempt entities as well as a majority of businesses. As of 2014, the IRS only keeps records of EINs belonging to charities.
To successfully apply for an EIN, a business must be legally registered and formed. A business entity can have its EIN revoked if, for three consecutive years, it fails to file a required return or filing. As of May 21, 2012, the IRS limits the issuance of EINs to one entity per day. A business that changes ownership or structure is required to file for a new EIN.