Launch With Confidence—We Build Your Legal Foundation
Launching a business is exciting—and a little daunting. The Law Offices of Katrina M. Barnett ensures your great idea gets the solid legal start it needs to grow safely. From choosing the right business entity to filing paperwork and drafting essential agreements, we support Illinois entrepreneurs at every step.
Comprehensive Startup & Entity Formation Support

- Entity Selection Guidance
We explain your options—LLC, S-Corp, C-Corp, Partnership—and help you choose what fits your business goals, tax preferences, and liability protection needs. - Formation Document Filing
Preparation and filing of Articles of Organization/Incorporation with the Illinois Secretary of State, plus obtaining your EIN and advising on business licenses. - Drafting Operating Agreements & Bylaws
We create custom operating agreements (for LLCs), bylaws, and shareholder or partnership agreements—crucial documents that clarify roles, responsibilities, and rules, even for single-member LLCs. - Startup Legal Strategy
Guidance on initial structure, ownership percentages, profit sharing, and handling changes or disputes between owners. - Coordination With Accountants
We often collaborate with your CPA to align your legal structure with tax strategy, so your business is set up for financial success from day one.
Don’t Let Technicalities or Missing Documents Stall Your Launch
- Efficient process—most LLCs and corporations approved within days.
- Transparent costs—upfront about fees and timeline, so you’re never surprised.
- Ongoing support—our team is here to answer questions and provide guidance, even after formation is complete.
What Every Illinois Entrepreneur Should Know
- How do I start an LLC in Illinois?
We handle all filings and draft a tailored operating agreement, getting your LLC up and running quickly and correctly. - LLC vs. S-Corp—Which is better?
It depends on your business’s goals, management, and tax preferences. We’ll walk you through the pros and cons so you make the best decision. - What legal agreements do I need when forming a business?
Every new company should have custom agreements between owners—like operating agreements, bylaws, and shareholder or partnership agreements—to avoid future disputes. - Can I use an online service to form my LLC?
Online services file basic paperwork but don’t provide tailored advice or draft the agreements you need to truly protect your business. - Already filed your LLC?
We can step in any time to draft your operating agreement or fill in missing documents—better late than never for your business’s safety.
Business Formation—Your Questions Answered
Do I need a lawyer to start an LLC or corporation in Illinois?
A lawyer ensures your business is structured for maximum protection and growth, with all the right agreements in place from the start.
What’s an operating agreement, and do I need one?
Yes—an operating agreement is a critical document for every LLC, even single-member ones. It defines roles, rules, and protects your business from internal disputes.
How long does it take to form a business in Illinois?
Most LLCs and corporations can be set up within days when all documents are ready.
Are formation services available outside Illinois?
Legal business formation services are offered only to clients in Chicago and throughout Illinois.
Build Your Business on a Strong Foundation—Start With a Consultation
Let’s set your company up for lasting success. Contact the Law Offices of Katrina M. Barnett to get expert help with LLC or corporation formation, agreements, and startup strategy in Illinois.
