Get a Federal EIN for your Connecticut business.
An Employer Identification Number is your business's federal tax ID. Connecticut entities need one to open a business bank account, hire employees, file federal taxes, and apply for most business credit. The IRS issues it free. File.Business handles the application end-to-end.
Get an EIN with File.Business →When you need an EIN in Connecticut
- Opening a business bank account. Every major bank requires an EIN for Connecticut entities.
- Hiring employees or running payroll.
- Filing federal taxes (1065, 1120, 1120-S, 941, 940).
- Establishing business credit separate from personal credit.
- Applying for SBA or commercial loans.
- Registering for Connecticut sales tax or payroll tax accounts.
Up a level, or across to the neighbors.
Federal EIN by state
The national explainer above this page: what changes between jurisdictions, and why.
Open the hub → SectionSecretary of State directory
Every filing the state business office takes, state by state.
Open the section → StateConnecticut business filings
Every filing a business makes in Connecticut, gathered on one page.
Open Connecticut → In ConnecticutSecretary of State reinstatement in Connecticut
Reinstatement, state by state
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Articles of amendment, state by state
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LLC vs Corporation, state by state
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Name reservation, state by state
Read the guide →