
Expert Tax Preparation in Oak Brook, IL
From simple returns to complex filings, our professional tax preparation services provide the expertise you need.
Why Choose Us
Get tax help whenever you need it
- Align tax strategies to your business goals
- Navigate complex tax and accounting issues
- Manage compliance risks and improve returns
- Eliminate the hassle of tax filing


About Us
Tax services for the businesses of tomorrow
Tired of doing your own taxes? We'll get them done for you! Providing a full spectrum of tax planning and preparation, accounting, consulting, and other tax services, we dive deep into every industry to bring better contextual understanding to each engagement.
Learn moreOur Process
Financial freedom in 3 easy steps

Trusted by Clients Across Chicagoland
See what our clients have to say about their experience working with QTA Tax. We're proud to maintain a 5-star rating on Google.
Local Expertise
Why Chicagoland Businesses Choose QTA Tax
For over a decade, QTA Consultants, Ltd. has provided professional tax services to businesses and individuals throughout the Chicago area. Our Oak Brook office serves clients from Naperville to downtown Chicago and everywhere in between.
Oak Brook & Chicagoland
Serving businesses across DuPage County, Cook County, and the greater Chicago metropolitan area with personalized tax preparation and planning services.
Industry Specialists
Deep expertise in real estate taxation, law firm accounting, dental practice finances, and cannabis industry compliance including IRS Section 280E.
Personalized Service
Work directly with experienced IRS Enrolled Agents who understand your business. No call centers, no outsourcing—just dedicated professionals focused on your success.
Proactive Tax Planning
Year-round tax strategy and planning to minimize liability, maximize deductions, and keep more money in your pocket. We don't just file—we optimize.
Trusted by hundreds of businesses across Illinois for tax preparation, bookkeeping, payroll services, and strategic financial consulting.
Common Questions
Frequently Asked Questions
Get answers to common questions about our tax preparation and consulting services.
Have more questions? We're here to help.
Contact UsVisit Our Oak Brook Office
Conveniently located in the heart of DuPage County, serving clients throughout Chicagoland
Get In Touch
Address
900 Jorie Blvd #101
Oak Brook, IL 60523
Phone
630-881-4679Office Hours
Mon - Fri: 9:00 AM - 5:00 PM
