Glossary • Updated 2026
EIN
Employer Identification Number: the federal tax ID every entity needs for banking and hiring.
In detail
Free from the IRS; online issuance requires an SSN/ITIN.
Foreign founders without either fax Form SS-4 (4–8 weeks).
Banks, Stripe, payroll, and tax filings all key off it.
Where it matters
More definitions
Sources
- Cal. Rev. & Tax Code; 8 Del. C.; Wyo. Stat. Title 17; FTB/SOS glossaries