CFR›Title 27›Chapter I›Part 19›Subpart I›Subject Group Requirements for Employer Identification Numbers ContainsSections 19.242–19.243CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Sections 19.242 § 19.242 Employer identification number. 19.243 § 19.243 Application for employer identification number. Previous Effective Tax Rates Effective Tax Rates Next Requirements for Filing Tax Returns Requirements for Filing Tax Returns