State of Illinois EIN Number: How to Find and Use It
Learn how to find, use, and replace your Illinois EIN number for business filings and compliance. Essential guidance for Illinois businesses.
An Employer Identification Number (EIN) is crucial for businesses in Illinois, serving as a unique identifier for tax and legal purposes. It is necessary for filing taxes, opening business bank accounts, and applying for licenses.
Who Must Obtain This ID
In Illinois, an EIN is required for businesses that hire employees, operate as corporations or partnerships, or file employment, excise, or alcohol, tobacco, and firearms tax returns. This includes LLCs taxed as corporations and non-profits seeking tax-exempt status under IRS guidelines. Sole proprietors may also need an EIN if they hire employees or establish a retirement plan. Trusts and estates with taxable income must also obtain an EIN for tax reporting.
Locating It on Official Documents
The EIN can be found on IRS correspondence, such as the CP 575 notice confirming issuance, or on past tax returns like Form 941 for employers or Form 990 for non-profits. Businesses filing electronically can access their EIN through the IRS e-Services portal. Financial institutions often require an EIN during account setup, and it may also appear on bank documents like account statements or loan applications.
How to Replace It if Missing
If an EIN is missing, search business records, including emails, accounting software, or bank statements. If it cannot be located, contact the IRS Business & Specialty Tax Line at 800-829-4933 with the business’s legal name and address for verification. If necessary, request a replacement using Form SS-4, submitted via fax or mail. Ensure all information is accurate to prevent delays. Using cloud-based storage for document management can help avoid future issues.
Where It May Be Required for Filings
The EIN is essential for various filings, including federal tax returns like Form 1120 for corporations and Form 1065 for partnerships. In Illinois, it is required for state income tax returns, such as Form IL-1120 for corporations. Providing an accurate EIN ensures proper processing and helps avoid penalties. It is also necessary when applying for state business licenses or permits, especially in regulated industries like healthcare or construction.