Click here to access the Business Affidavit Reference Guide.
| Entity | TIN |
|---|---|
| Association | Association's Employer Information Number (EIN) |
| Campaign | Campaign's EIN, certified by the campaign treasurer or candidate's Social Security Number (SSN), certified by the treasurer |
| Club or Civic group | Club or civic group's EIN |
| Corporation | EIN* |
| Interest on Lawyer Trust Account (IOLTA) | State Bar Foundation's EIN |
| Limited Liability Company (LLC): Single-member (sole proprietorship) | Member SSN or LLC EIN |
| LLC: Multiple members (partnership) | LLC EIN |
| LLC: C corporation | EIN + |
| LLC: S corporation | EIN ++ |
| Partnership | EIN |
| Political Action Committee | EIN |
| Public Funds / US Government Funds | EIN |
| Sole Proprietorship | SSN of owner |
* Regular C corporations must file Form 1120 each year to report income, deductions, and profits. S corporations must file a Form 1120S for their annual tax returns. Shareholders do not pay self-employment taxes on S corporation profits.
+ An LLC can be taxed as a C corporation by filling out the Internal Revenue Services (IRS) Form 8832, titled Entity Classification Election, and electing corporation taxation status.
++ An LLC can be taxed as an S corporation when the following occurs:
- After choosing the corporation election on Form 8832
- The IRS tax form 5223 Election by a Small Business Corporation is subsequently filed with the IRS
All owners of an LLC taxed as an S corporation must be U.S. citizens or resident aliens. With rare exceptions, the tax year-end must be December.