Customer Service Specialist I (REVENUE TAX SPECIALIST I)

Job Requisition ID: 55713
Opening Date: 05/06/2026
Closing Date: 05/20/2026; 11:59pm
Agency: Department of Revenue
Class Title: REVENUE TAX SPECIALIST I - 38571
Skill Option: None
Bilingual Option: None
Salary: $4,747-$6,446/monthly - Effective 7/1/26
Job Type: Salaried
Category: Full Time
County: Sangamon
Number of Vacancies: 9
Bargaining Unit Code: RC062 Technical Employees, AFSCME
Merit Comp Code:

Please Note: The anticipated start date for this position is 9/16/2026.

This position is a union position; therefore, provisions of the relevant collective bargaining agreement/labor contract apply to the filling of this position.

All applicants who want to be considered for this position MUST apply electronically through the illinois.jobs2web.com website. State of Illinois employees should click the link near the top left to apply through the SuccessFactors employee career portal.

Applications submitted via email or any paper manner (mail, fax, hand delivery) will not be considered.

Why Work for Illinois?

Working with the State of Illinois is a testament to the values of compassion, equity, and dedication that define our state. Whether you’re helping to improve schools, protect our natural resources, or support families in need, you’re part of something bigger—something that touches the lives of every person who calls Illinois home.

No matter what state career you’re looking for, we offer jobs that fit your life and your schedule—flexible jobs that provide the gold standard of benefits. Our employees can take advantage of various avenues to advance their careers and realize their dreams. Our top-tier benefits and great retirement packages can help you build a rewarding career and lasting future with the State of Illinois.

Would you like to work for a professional organization which provides steady hours and an exceptional benefits package? How about a workplace with career and personal growth opportunities? Then consider working for the Illinois Department of Revenue. We are hiring multiple Customer Service Specialist Is (Revenue Tax Specialist Is) for our Customer Service Bureau in Springfield, IL for a tentative start date of 9/16/2026. This position is responsible for serving the Call Center by working with the department staff, taxpayers, businesses, and local governments on the telephone, in person, and through email utilizing interpersonal and customer service skills. You will provide responses to inquiries on the various tax types and tax laws affecting: Individual Income Tax; Withholding Income Tax; Sales and Use Tax; Business Income Tax and training on GenTax and MyTax Illinois software. If you have completed the Revenue Tax Specialist Trainee program and either four years of college or have the equivalent experience, are self-motivated, detail oriented, and enjoy receiving the appreciation of others for the service you provide, then we want you! Don’t let this opportunity pass you by. Apply now before time runs out!

The benefits of working at Department of Revenue include a 37 ½ hour work week, a generous salary and benefits package (paid time off for vacation, sick, or personal leave, thirteen holidays) pension and other retirement benefits, tuition reimbursement, and insurance eligibility on day one (medical, dental, vision, and life).

• Under general supervision, provides technical guidance and assistance to taxpayers, their representatives, and others concerning various taxes, tax accounts, grant programs, and other matters concerning all taxes administered by the Illinois Department of Revenue (IDOR) in addition to interpretation of the Illinois Business Registration and Electronic Filing Application rules and regulations.
• Analyzes and processes or adjusts routine and involved accounts and returns.
• Determines progressively difficult research methods necessary for resolution of discrepancies or deficiencies in order to adjust taxpayer accounts.
• Initiates oral and/or written communication to taxpayers and/or their representatives, licensees, etc. regarding account/application status, laws administered by IDOR, additional documentation or forms needed to resolve discrepancies, balances owed, etc.
• Receives on-the-job training in processing non-routine and highly technical accounts.
• Serves as a member of special project or test teams, assigned to perform specific development level studies, during the development and testing of new procedures and/or automated systems.
• Computes tax, penalty and interest due or payable.
• Approves or denies reasonable cause requests based on procedural and statutory guidelines.
• Performs other duties as required or assigned, which are reasonably within the scope of duties enumerated above.

• Requires successful completion of the Revenue Tax Specialist Trainee program, which entails 12 months of agency training, and either: knowledge, skill and mental development equivalent to the completion of four years of college; OR four years of work experience providing tax related support functions within a program area at the Illinois Department of Revenue.

• Requires the ability to successfully complete a tax compliance and fingerprint-based background check.
• Requires ability to travel in the performance of duties, with overnight stays as appropriate.
• This position is considered medium work as defined by the U.S. Department of Labor (20 CFR 404.1567(c)). Medium work involves lifting no more than 50 pounds at a time with frequent lifting or carrying of objects weighing up to 25 pounds.
• Requires the ability to use and secure a state issued mobile device, e.g., cellular phone, laptop computer, tablet, etc.
• The conditions of employment listed here are incorporated and related to any of the job duties as listed in the job description.

The Illinois Department of Revenue (IDOR) is responsible for administering the state's tax laws and collecting taxes in a fair, consistent, and efficient manner. Their goal is to provide accurate, timely, and reliable funding and information to both state and local communities. By implementing best practices, IDOR works to continuously improve and enhance accuracy, efficiency, and productivity across all areas of operations and tax administration. In doing so, they aim to earn respect, deliver value, and serve as a trusted source of information for the public.

IDOR is a professional governmental entity that prioritizes its employees and actively invests in their success through comprehensive training and engagement. As the proud Platinum recipient of the 2026 Bell Seal for workplace mental health, IDOR cultivates an environment that encourages open dialogue and collaboration on mental health issues. With a strong commitment to diversity—both culturally and professionally—IDOR believes that this inclusive approach leads to a more productive workplace, ultimately benefiting the citizens and taxpayers of Illinois.

Please Note: The anticipated start date for this position is 9/16/2026.

Work Hours: 8:30am-5:00pm, Monday-Friday

Headquarter Location: IL Department of Revenue

Taxpayer Services/Customer Service

101 W Jefferson St, Springfield, Illinois, 62702

Work County: Sangamon

Agency Contact:

[email protected]

Illinois Department of Revenue - Human Resources

Willard Ice Building, 101 W Jefferson St, WIB Mail Code 5-110, Springfield, IL 62702

PHONE- 217-782-7064

Posting Group: Legal, Audit & Compliance

This position DOES NOT contain “Specialized Skills” (as that term is used in CBAs).

APPLICATION INSTRUCTIONS

Use the “Apply” button at the top right or bottom right of this posting to begin the application process.

If you are not already signed in, you will be prompted to do so.

State employees should sign in to the career portal for State of Illinois employees – a link is available at the top left of the Illinois.jobs2web.com homepage in the blue ribbon.

Non-State employees should log in on the using the “View Profile” link in the top right of the Illinois.jobs2web.com homepage in the blue ribbon. If you have never before signed in, you will be prompted to create an account.

If you have questions about how to apply, please see the following resources:

State employees: Log in to the career portal for State employees and review the Internal Candidate Application Job Aid

Non-State employees: on Illinois.jobs2web.com – click “Application Procedures” in the footer of every page of the website.

We recommend a copy of your resume be included with the application.

The main form of communication will be through email. Please check your “junk mail”, “spam”, or “other” folder for communication(s) regarding any submitted application(s). You may receive emails from the following addresses:

• [email protected]
• [email protected]

Tracking #s 37932-37940