Federal Requirements
- IRS Small Business Center
- Federal tax information for small businesses
- Updating Incorrect Business Entity Information
- Change in Application for Employer Identification Number
- Use of Nominees in the EIN Application Process
- Employer Identification Number Form SS4
- For more information: 800.829.4933
Apply for an Employer Identification Number (EIN) Online
Fax-TIN: 859.669.5760 - Publication 15 (pdf) and 15A (pdf)(Circular E regarding employer-employee relations)
- For Forms and Publications: 800.829.3676
For more information: 800.829.4933 (Business Specialty Line) - Tax Law Questions
- General information: 800.829.1040
Business Tax Questions: 800.829.4933
Forms and Publications: 800.829.3676 - Employment Eligibility Verification Form I-9
- For more information, go to the U.S. Citizenship and Immigration Services Questions and Answers
- Social Security Program
- For more information: 800.772.1213
