Business structure and registration: which paperwork does what?

The IRS lists sole proprietorships, partnerships, corporations and S corporations among common business forms. An LLC is created under state law. Which option fits involves legal and tax considerations, so begin with who will own the business, what it will do and where it will operate. (IRS: business structures)

An LLC doesn't have one automatic federal income-tax treatment. Depending on its members and elections, it may be treated as part of its owner's return, as a partnership or as a corporation. This is why 'LLC or S corporation?' can mix two different questions: legal structure and tax treatment. (IRS: LLCs and federal tax classification)

Prepare a short description for a qualified advisor: owners, work performed, employees or contractors, equipment, premises and expected income. Explain what could go wrong on a job and any contracts you expect to sign. A structure recommendation without those facts is mostly a guess.

SBA explains that structure affects liability, taxes, fundraising and paperwork. An LLC can provide personal liability protection in many situations, but that isn't a promise that every risk disappears. Ask how your structure, insurance and contracts fit together. (SBA: launching and registering a business)

Keep a record of the office, the action required and the confirmation you receive. The goal is a business file you can use again when the bank, insurer or a customer asks for it.

1. Check the state formation requirements

   Use the filing office for the state where you will operate. Confirm whether your activity or ownership needs a particular structure, and what registration is required.

2. Apply for the tax ID when required

   For a new legal entity, finish forming it before applying for its EIN. Check the IRS eligibility instructions and use the appropriate application method.

3. Confirm permission for the activity

   Ask the relevant state and local offices about trade licenses, permits, zoning and any tax registrations for the actual work and location.

4. Save proof and the next date

   Keep confirmations, approved names and renewal information together. Put the next required action on a calendar with time to prepare.

An EIN is free from the IRS. The online service issues one immediately if the application is approved; eligibility and other application methods are explained on the official page. Form a legal entity first when that applies, so its name and details match. (IRS: get an employer identification number)

You can pay a professional for wider formation help, but the IRS number itself does not carry an application fee. Check the address before entering personal information, and save the confirmation when it arrives. (IRS: get an employer identification number)

As of September 2026, FinCEN's final rule exempts entities created in the United States from its beneficial ownership information reporting requirement. The rule took effect on August 14, 2026. Some entities formed abroad and registered to do business in the United States still have reporting duties. (FinCEN: current beneficial ownership reporting requirements)

Use FinCEN's current guidance for that specific question. A state registration, a bank's ownership questions and a federal BOI filing are different processes; completing one doesn't tell you whether the others apply. (FinCEN: current beneficial ownership reporting requirements)

A folder called 'business stuff' is a start. A folder where you can find the approved formation document, EIN letter, license and next renewal date is considerably better.

Write the official filing link and any preparation needed beside each date. Check requirements again when you add an owner, move, hire or expand into another state. Those changes are easier to handle when you can see what you filed the first time.