Illinois secretary of state identification number business

To sign up for online payroll through Square in Illinois, you must be registered as an employer with the Illinois Department of Revenue (IDOR) and Department of Employment Security (IDES), and provide us with your Illinois Unemployment Account Number and Unemployment Insurance (UI) Contribution Rate.

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Add Your Illinois Payroll Account Numbers to Square Payroll
Don’t Have Your Illinois Payroll Account Numbers?
Can’t Locate Your Illinois Unemployment Account Number and/or Taxpayer ID Number?
Add Your Unemployment Contribution Rate to Square Payroll
Illinois State Tax Details
How do I get Illinois Secretary of State identification number?
How do I get a business tax ID number in Illinois?
Can I look up my business EIN number?
Do I need an Illinois business tax number?

Add Your Illinois Payroll Account Numbers to Square Payroll

You must be a registered employer to have an Illinois Unemployment Account Number and Illinois Taxpayer ID Number. Registration is required in order to acquire both of these numbers and we must have these numbers in order to make Illinois state tax payments and filings on your behalf.

Don’t Have Your Illinois Payroll Account Numbers?

To get your Illinois Payroll Account Numbers, register online with MyTax Illinois. After you complete registration, you will receive your Illinois Unemployment Account Number and Taxpayer ID Number.

Square Payroll only requires the first seven digits (XXXXXXX) of your Unemployment Account Number. Your Taxpayer ID Number (also known as an Illinois Department of Revenue [IDOR] Account ID Number or Illinois Business Tax number [IBT number]) will typically match your nine digit (XX-XXXXXXX) Federal Employment Identification Number (EIN) followed by a three-digit (XXX) Sequence Number.

Learn how to locate or obtain an EIN.

Can’t Locate Your Illinois Unemployment Account Number and/or Taxpayer ID Number?

To locate your Unemployment Account Number:

Log in to your Mytax Illinois Account.
Locate your Unemployment Account Number on any previously filed Employer’s Contribution & Wage Report (Form UI-3/40).
Locate your Unemployment Account Number on the Notice of Contribution Rate sent by IDES in December each year.

To locate your Taxpayer ID Number:

Log in to your MyTax Illinois online account.
Locate your Taxpayer ID Number on any previous Illinois Withholding Income Tax Return (Form IL-941).

Add Your Unemployment Contribution Rate to Square Payroll

You must provide your UI Contribution Rate when signing up for Square Payroll so we can accurately compute this tax. To locate your UI Contribution Rate:

If you are a new employer, you will receive your Unemployment Contribution Rate after you complete registration on MyTax Illinois. The UI Contribution Rate includes the Fund Building Rate.
If you are an existing employer switching to Square Payroll, you can look your rate up online by logging in to your MyTax Illinois Account or locate it on the Notice of Contribution Rate that IDES mails each December. The UI Contribution Rate includes the Fund Building Rate.
If you can’t find your UI Contribution Rate, call IDES at 800-247-4984.

You are responsible for ensuring Square Payroll has the correct UI Contribution Rate for your business. If you need to update your rate, you can do so from the Tax Info tab in your online Square Dashboard.

Illinois State Tax Details

Square Payroll processes the following per the frequency below to the listed state agencies:

Review a full list of tax resources for all Square Payroll supported states.

The type of business entity you choose will depend on three primary factors: liability, taxation, and record-keeping. Before you establish a business, you may consider consulting with a Corporate/Business Law Attorney or Certified Public Accountant (CPA), who specializes in your industry, for advice about what type of business entity will meet your business needs and what your legal obligations will be.

You must register your business entity with the proper government agency, once the most appropriate business entity is determined :

Sole Proprietors and General Partnerships, operating under an assumed name, must register with the Cook County Clerk's Office.
All other business entity types (i.e. Limited Partnership (LP), Limited Liability Partnership (LLP), Limited Liability Corporation (LLC), Corporation, or Not-for-Profit Corporation (NFP)) must register with the Illinois Secretary of State

Accordingly, you, or your licensed representative, must also register for your business taxes with the U.S. Internal Revenue Service (IRS) and Illinois Department of Revenue (IDOR). The City of Chicago business tax registration is part of the business license application process.

For additional information about business and tax registration, please review the chart below:

Jurisdiction	Description	Contact
Cook County	Assumed Business Name Registration The Clerk's Office registers business names known as "assumed names" for new businesses in accordance with Illinois law. An assumed name is issued to any business entity that uses a name other than the name(s) of the individual(s) who own or operate the business. For example, a business called "John Jones, P.C." (i.e. owner's full name and title) does not have to file an assumed name, but "Jones Wrecking" does.	50 W. Washington St. West Concourse Level Suite 114 Chicago, IL 312.603.7790
State of Illinois	Register with the Secretary of State If you plan to do business as a legal business entity in Illinois, regardless if you are based in Illinois or not, you will need to register with the Illinois Secretary of State.	50 W. Washington St. West Concourse Level Suite 1240 Chicago, IL 312.793.3380
Obtain an Illinois Department of Revenue (IDOR) Account ID Number (Formerly Illinois Business Tax Number – IBT) You must register with IDOR if you conduct business in Illinois, or with Illinois customers. This includes sole proprietors (individual or husband/wife), and all legal business entities, including exempt organizations, who plan to hire employees, buy or sell products wholesale or retail, or manufacture goods.	555 W. Monroe 11th Floor Chicago, IL 217.785.3707 and/or email:
US Government	Obtain an Employer Identification Number (EIN) An Employer Identification Number (EIN) is also known as a Federal Tax Identification Number, and is used to identify a legal business entity. Businesses are required to obtain an EIN to file and pay any federal tax obligation. You may register for an EIN with the United States Internal Revenue Service (IRS). IRS Guide to Starting a Business Find links to basic federal tax information for people who are starting a business, as well as information to assist in making basic business decisions. The list should not be construed as all-inclusive. Other steps may be appropriate for your specific type of business.	230 S. Dearborn St. Chicago, IL 800.829.4933

How do I get Illinois Secretary of State identification number?

The Illinois Department of Revenue accepts applications by mail or online. When applying online, go through the Illinois Business Gateway website or Form REG-1 if filing by mail. Complete the Illinois Business Registration Application and provide the company's FEIN, business name, primary and mailing business address.

How do I get a business tax ID number in Illinois?

Business Registration.

electronically register through MyTax Illinois (approximately one to two days to process);.

complete and mail Form REG-1, Illinois Business Registration Application, to us at the address on the form (Form REG-1 is available on our web site as a fill-in and savable form. ... .

visit one of our offices..

Can I look up my business EIN number?

Ask the IRS to search for your EIN by calling the Business & Specialty Tax Line at 800-829-4933. The hours of operation are 7:00 a.m. - 7:00 p.m. local time, Monday through Friday.

Do I need an Illinois business tax number?

Your business needs to register with the Illinois Department of Revenue if you conduct business in Illinois or with Illinois customers. Your business must obtain an Illinois Business Tax number from the Illinois Department of Revenue.