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Home/Secretary of State directory/Federal EIN/Get a Federal EIN for your Illinois business
Illinois . EIN / Federal Tax ID

Get a Federal EIN for your Illinois business.

An Employer Identification Number is your business's federal tax ID. Illinois 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.

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When you need an EIN in Illinois

  • Opening a business bank account. Every major bank requires an EIN for Illinois 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 Illinois sales tax or payroll tax accounts.
Where this page sits

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Guide

Federal EIN by state

The national explainer above this page: what changes between jurisdictions, and why.

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Secretary of State directory

Every filing the state business office takes, state by state.

Open the section → State

Illinois business filings

Every filing a business makes in Illinois, gathered on one page.

Open Illinois → In Illinois

Secretary of State DBA in Illinois

Secretary of State DBA, state by state

Read the guide → In Illinois

Secretary of State in Illinois

The Secretary of State, state by state

Read the guide → In Illinois

Series LLC in Illinois

The series LLC, state by state

Read the guide → In Illinois

Entity conversion in Illinois

Entity conversion, state by state

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Federal tax ID

Illinois EIN: at a glance.

Federal EIN is issued by the IRS, not the Secretary of State. We file SS-4 for you the same day.

Filing details

How Illinois handles EIN.

Illinois Business SearchLook up any Illinois entity and read every status right.
Where to fileSecretary of State office, online portal, or by mail with the required fee.
TurnaroundStandard processing: 5-10 business days. Expedited service available for an additional state fee.
Required informationEntity name + ID, current officers and registered agent, principal office address.
Common pitfallsMismatched officer addresses, expired registered agent, missed prior reports causing administrative dissolution.
Frequently asked

Illinois EIN questions.

Does the Illinois Secretary of State issue my EIN?

No, and this is a common mix-up: your EIN comes from the IRS, a federal agency, not the Illinois Secretary of State, which handles your state entity registration. You need both, the Illinois filing to create the entity and the federal EIN to bank and file taxes. We obtain the EIN and complete the Illinois registration together so nothing is missing.

Can a non-US founder get an EIN for an Illinois entity?

Yes: you do not need an SSN to obtain an EIN for an Illinois LLC or corporation; the IRS has a process for foreign responsible parties, though it takes longer than the online route. It is a common step for international owners. We obtain the EIN for your Illinois entity even without an SSN so you can bank and operate.

What do I use my EIN for after forming in Illinois?

To open a business bank account, hire employees, file federal and often Illinois taxes, and identify the business instead of your SSN. It is the entity's federal tax ID. We make sure your Illinois entity has its EIN in hand so banking and payroll are not held up after formation. Link llc-bank-account? no hub. Link get-an-ein.

Does each Illinois entity need its own EIN?

Generally yes: each separate LLC or corporation you register with Illinois should have its own EIN, since sharing one across entities blurs the tax and liability lines. A single-member LLC with no employees can sometimes use the owner's SSN, but a distinct EIN is cleaner. We obtain an EIN per Illinois entity so each stands on its own. Link holding-company.

Do I need a separate Illinois state tax ID too?

Often, if you have employees or collect sales tax: the federal EIN is one number, and Illinois issues its own state tax or employer account number when you register for payroll or sales tax. They are different IDs for different filings. We obtain the EIN and complete the Illinois state tax registrations you actually need. Link sales-tax-registration.

What if my EIN information does not match my Illinois filing?

A mismatch between the name on the EIN and the Illinois Secretary of State record can cause bank and tax problems, so the two should agree exactly. It usually happens when the EIN is obtained before or separately from the entity. We align the Illinois filing and the EIN so the federal and state records match.

Can File.Business get my EIN with my Illinois formation?

Yes. We form or register your entity with the Illinois Secretary of State and obtain the federal EIN in the same process, including for non-US founders without an SSN, so you leave with both the state registration and the federal tax ID rather than chasing the IRS separately.

Related

Related services

Illinois Secretary of StateOverview, contact, full filing index. Annual reportDue dates, fees, and how to file. Registered agentRequirements and renewal. Compliance calendarEvery deadline that touches your entity.

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