EIN
Employer Identification Number (EIN) means the nine-digit taxpayer identifying number that is assigned to an individual, trust, estate, partnership, association, company, or corporation pursuant to sections 6011, or corresponding provisions of prior law, or 6109 of the Internal Revenue Code.
Source
24 CFR § 5.214
Scoping language
In addition to the definitions in 5.100, the following definitions apply to this subpart B: