Form a Business in Illinois

The first real decision is your entity type, because it drives everything after: taxes, liability, and paperwork. For most small businesses in Illinois that means forming an LLC, which you do by filing a formation document with the state and naming a registered agent. Get the structure right first, then EIN, banking, and licenses follow in order. We walk you through the Illinois sequence so nothing is done out of turn.

Most Illinois founders land on an LLC for its liability protection and simple pass-through taxes, but a corporation makes sense if you plan to raise venture capital or issue stock. A sole proprietorship is simplest but leaves your personal assets exposed. The honest answer depends on your goals, so we lay out the LLC-versus-corporation trade-offs for Illinois rather than pushing one.

Yes. Illinois requires every LLC and corporation to name a registered agent with a physical in-state address to receive legal and state notices. You can be your own, but then your address is public and you must be available during business hours. Most owners use a service to stay private and never miss a notice. We include agent service so this box is checked from day one.

The cost is the Illinois state filing fee plus any service you use, and Illinois also charges recurring fees such as an annual or biennial report. Our formation service itself is free, and we pass state fees through at cost with no markup. Because state figures change over time, current Illinois amounts are on the pricing page rather than quoted here where they could go stale.

Often yes, and it is usually layered. Illinois may require a state-level license for certain activities, and your city or county frequently adds its own, plus industry permits. Very few businesses need nothing at all. We map every Illinois license and permit your specific business needs so you open legally instead of guessing which ones apply.

It depends on your structure and activity, but expect some mix of federal income and self-employment tax, Illinois state taxes where they apply, and sales tax if you sell taxable goods. Some states have no income tax while others add franchise or gross-receipts taxes. Once profits grow, an S-corp election can reduce self-employment tax. We flag which Illinois taxes actually apply to you rather than listing every possibility.

Almost certainly. You need an EIN to open a business bank account, hire employees, or file most business taxes, and it keeps your Social Security number off company paperwork. It is free from the IRS, and our value is getting it right and fast, including for founders without an SSN. We obtain it as part of setting up your Illinois entity so banking is not held up.

You can, but if you operate in Illinois it usually backfires. Forming in Delaware or Wyoming while doing business in Illinois means registering in Illinois as a foreign entity anyway and paying two states. The out-of-state advantage is real mainly for venture-backed or holding companies. For a business rooted in Illinois, forming at home is almost always cheaper and simpler.

After formation, Illinois expects you to keep a registered agent, file the periodic annual or biennial report, pay any state fees, and renew licenses on schedule. Miss these and the state can revoke your good standing or dissolve the entity. We track your Illinois deadlines in a compliance calendar and can file the reports for you so nothing lapses while you run the business.