New Company Registration for Illinois

Disclaimer: This article is not intended to be tax, legal, financial, or HR advice. Rules and regulations change over time and can vary by location. Consult with a lawyer, accountant, Tax, or HR expert for specific guidance.

---

Register for Taxes with Middesk

Homebase has partnered with Middesk to make tax registration easier for you.

• Middesk can register you across all 50 states for withholdings/income tax (SIT) and unemployment insurance (SUI)
• Middesk will continue to support your ongoing compliance by processing and surfacing your state mail for your review
• Middesk offers registrations for select PFMLs and local jurisdictions as well

To get started, sign up here and check out this tutorial.

---

State Withholding Income Tax & Unemployment Insurance Tax (UI)

You must register with the Illinois Department of Revenue if you conduct business in Illinois, or with Illinois customers.

Tax Agency: Illinois Department of Revenue

Registering for a Taxpayer ID

1. Go to MyTaxIllinois.
2. Under Register, select Register a New Business.
3. Register for both state income tax withholding and unemployment tax.

Creating a Username & Password

1. Go back to MyTaxIllinois and select Sign Up.
   1. Note: If you completed the activation summary and successfully submitted the information, you should first receive a confirmation screen and then an email, containing your authentication code, a few minutes later.
   2. Note: Activation is based on your Social Security number (SSN) if you are a sole proprietor or your Federal Employer Identification Number (FEIN) for all other businesses. This means that all the tax types under your FEIN or SSN will be in one MyTax Illinois Account.

After You Register

• Update your Homebase account with your Illinois Taxpayer ID. Your Illinois Taxpayer ID is required for all Illinois Department of Revenue interactions to ensure your account is accurate.
• If you have any questions regarding this process, please call a customer support representative at (217) 785-3707 or email REV.DoNotReply@Illinois.gov.

---

Granting Third party Access to Illinois Department of Revenue

1. Login to your MyTax Illinois account.
2. Click on Settings in the top-right hand menu.
3. Select Manage Third Party Access.
4. Under Third Party Access make sure the:
   1. Allow setting is set to Yes.
   2. Default access is set to Third Party.
   3. Default account access is set to Full Access.

Note: Homebase uses a payroll partner, Check for backend payroll processing.