DUNS Number vs EIN vs UEI: The Plain-English Comparison (2026)
Quick Answer: They’re three different identifiers from three different organizations. The DUNS number (Dun & Bradstreet) opens your business credit file. The EIN (IRS) identifies your business for taxes, payroll, and banking. The UEI (SAM.gov) identifies you for US federal contracts and grants. All three are free, none of them replaces another — and most…
