OBBBA Compliance in Illinois: W-2 Requirements for Tipped Employees (Non-Conforming)

Illinois does not conform to the One Big Beautiful Bill Act (OBBBA). Here's what that means for employers with tipped employees in Illinois.

Illinois does not conform to OBBBA. Employees cannot claim the tip or overtime deduction on their Illinois state return, even though federal W-2 reporting is still required.

State Conformity Status: Non-Conforming

Because Illinois does not conform to OBBBA, your employees can claim the deduction on their federal return but NOT on their Illinois state return. You are still required to report the qualified amounts on the W-2 for federal purposes.

This means Illinois employees will see a smaller overall tax benefit compared to employees in conforming states. As an employer, your W-2 reporting obligations are the same regardless of state conformity.

W-2 Reporting Requirements in Illinois

Regardless of state conformity, all Illinois employers with tipped employees must:

  1. Track qualified tips separately — voluntary cash and credit card tips vs. mandatory service charges
  2. Calculate the 0.5x overtime premium for each employee's overtime hours
  3. Assign a TTOC code to each tipped employee based on their primary role
  4. Report on W-2s — Code TP (qualified tips) and Code TT (overtime premium) in Box 12, TTOC code in Box 14b

Key Deadlines

Common TTOC Codes for Illinois Businesses

The most common tipped occupations in Illinois include:

See the complete TTOC code list for all occupation categories.

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