How to Form a US LLC: State Filing, Registered Agent, EIN and Post-Formation Checklist

To form a US LLC, choose the appropriate formation state, confirm that the legal name is available, appoint a registered agent and file the state’s formation document. Wait for the state to approve the entity before applying for an Employer Identification Number or completing accounts and registrations that require the approved legal name.

Treat the work as three separate layers: forming the legal entity, setting up federal and state taxes and obtaining permission to operate. Completing the state filing does not automatically issue an EIN, business license or authority to operate in another state.

1. Put the formation steps in the right order

Make the state-level decisions first, then submit later applications using the accepted formation record. A practical sequence is:

1. Decide where to form the LLC.
2. Check the proposed legal name and applicable restrictions.
3. Select a registered agent in the formation state.
4. File articles of organization, a certificate of formation or the state’s equivalent document.
5. Receive and preserve the state’s approval.
6. Adopt an operating agreement and document initial decisions.
7. Apply for an EIN using the approved entity details.
8. Open a business bank account and establish accounting records.
9. Register for applicable taxes, licenses and permits.
10. Calendar recurring state, tax and licensing obligations.

The SBA’s registration guidance says most states use the Secretary of State or a comparable business agency, requires the registered agent to be located in the registration state and explains that activity in additional states may require foreign qualification. Use the relevant state agency’s portal to confirm its current forms, fees and deadlines.

2. Choose the formation state before choosing a filing service

For an owner operating primarily in one state, forming in that home state is usually the simplest starting point. Forming elsewhere may still leave the company required to register where it actually conducts business, creating filings, registered-agent arrangements and recurring obligations in two jurisdictions.

An out-of-state formation can make sense when there is a specific legal, investment, governance or operational reason. Do not choose it solely because a state is marketed as business-friendly; compare the formation state with every state where the company will have workers, premises or regular operations.

Answer these questions before filing:

• Where will the owners and employees perform their work?
• Will the company lease property, hold inventory or maintain an office elsewhere?
• Does the occupation require a professional entity or licensing-board approval?
• Does an investor, lender or material contract require a particular jurisdiction?
• What formation fees, recurring reports, state taxes and registered-agent costs apply?

If the answers point to several states, check each jurisdiction’s foreign-qualification rules. Legal advice is particularly useful when the company has multiple owners, regulated activities, outside investment or uncertainty about where it is considered to be doing business.

3. Confirm the name and appoint a registered agent

Search the formation state’s official entity database before buying branded materials or preparing federal and banking applications. Naming rules vary, but the state may require an LLC designator, distinguishability from existing records and approval for restricted words.

State acceptance of an entity name is not the same as nationwide trademark clearance. If the name is commercially important, review possible trademark conflicts before investing heavily in it. If the public brand differs from the LLC’s legal name, check whether the relevant state or locality requires a DBA, assumed-name or fictitious-name filing.

The registered agent receives service of process and official state documents for the LLC. The selected person or organization must satisfy the formation state’s eligibility and address rules and must handle time-sensitive deliveries reliably.

Serving as your own agent may avoid a service charge, but the submitted address may appear in public records and someone must remain available as state law requires. A commercial agent can provide continuity, particularly for an out-of-state formation, but the LLC remains responsible for responding to notices.

4. File the state formation document

File articles of organization, a certificate of formation or the equivalent document with the official state filing office. Use the same legal name throughout and follow that jurisdiction’s instructions instead of copying a form prepared for another state.

The filing may request:

• The LLC’s legal name and principal address.
• The registered agent’s name and registered office.
• Whether members or appointed managers will manage the company.
• The organizer’s name and signature.
• A business purpose or duration, where requested.
• Profession-specific or supplemental information.

Do not treat a formation service’s advertised price as the total cost. Forbes Advisor’s filing overview places state LLC filing charges between about $40 and $500, excluding possible costs such as name reservation, expedited processing, publication, permits and agent services. That national range is only a planning reference; verify the exact charge on the formation state’s current fee schedule before paying.

Save the submitted form, payment receipt, acceptance notice and stamped or certified formation record. A submission confirmation is not the same as approval, so correct any rejection and wait for state acceptance before using the entity details in applications that require a formed LLC.

5. Create the operating agreement and initial records

An operating agreement sets the rules between the LLC and its members. Even where it is not filed with the state, it can document authority, financial arrangements and procedures for later changes.

For a single-member LLC, the agreement can record ownership, management authority and initial contributions. A multi-member agreement should address contributions, voting, allocations and distributions, transfers, member departures, additional funding, deadlocks and dissolution.

Generic template language is risky when ownership, contributions or economic rights are unequal. The agreement should match the members’ actual arrangement, the state filing and the intended tax treatment. Seek legal and tax advice when members contribute different types of property or services, distributions will not follow ownership percentages, or outside investors are expected.

Prepare written initial consents or resolutions when appropriate. They can adopt the operating agreement, authorize a bank account, identify signers, record contributions and approve significant contracts without importing unnecessary corporate procedures.

6. Apply for the EIN after state approval

Use the accepted legal name and formation details when requesting the LLC’s federal tax ID. The IRS EIN instructions tell applicants creating an LLC or another legal entity to register it with the state first and state that an EIN can be obtained free directly from the IRS.

Identify the responsible party accurately and retain the EIN confirmation with the permanent company records. A formation provider may charge to submit the application, but that service charge is not an IRS fee.

The IRS identifies employment and certain federal tax obligations as reasons an entity needs an EIN; it also permits a business that does not need one for federal tax purposes to request one for banking or state-tax purposes. Receiving an EIN does not form the LLC, issue a business license, establish good standing or make every possible tax election.

Discuss classification and time-sensitive elections with a qualified tax professional. An LLC’s federal and state tax treatment depends on factors such as ownership, elections, payroll, income and the members’ circumstances; the state-law entity label does not answer every tax question.

7. Check whether another state requires foreign qualification

Formation creates the LLC under one state’s law; it does not provide nationwide authority to conduct every type of activity. If the company has sufficient activity in another jurisdiction, it may need to apply there as a foreign LLC.

The additional registration may require an application for authority, a registered agent, a filing fee and evidence of the LLC’s standing in its formation state. It may also add recurring reports and tax obligations.

No single state-neutral rule resolves every situation involving remote workers, e-commerce, property, in-person services or revenue from another jurisdiction. Review the definition of doing business in each relevant state and obtain professional advice when the footprint is unclear. Perform this check before leasing premises, hiring in a new state or starting regulated work there.

8. Complete banking, tax, licensing and insurance setup

Open an account in the LLC’s legal name and separate company funds from personal funds. Depending on the institution and ownership structure, the bank may request the approved formation document, EIN confirmation, operating agreement, ownership information and authorization for account signers.

Establish the accounting process at the same time. Record owner contributions, retain receipts, reconcile accounts and document how owners will be reimbursed or paid. An LLC and EIN alone do not create meaningful financial separation if transactions remain mixed.

Identify registrations based on the company’s activities and locations:

• Applicable state business-tax accounts.
• Sales and use tax registration where the company must collect tax.
• Employer withholding, unemployment insurance and payroll accounts before hiring.
• Professional, occupational, industry, zoning or health permits.
• City or county business licenses and local tax registrations.
• Required filings for a public-facing name that differs from the legal name.

Evaluate insurance separately from entity formation. Depending on the work, contracts and assets involved, relevant coverage may include general liability, professional liability, workers’ compensation, commercial auto, cyber or property insurance.

9. Build the post-formation compliance calendar

Create a calendar from the formation state’s instructions and the rules of every foreign-qualification jurisdiction. Do not assume every state uses the term “annual report” or sets the deadline on the formation anniversary; filing names, frequencies and due dates vary.

Track the obligations that apply to the LLC:

• Annual, biennial or other periodic state reports and payments.
• Federal, state and local tax returns and payment dates.
• Changes to the registered agent, address or management that require a filing.
• License, permit, DBA and insurance renewals.
• Contract, accounting, tax and ownership records.

Assign each deadline to a named person and keep agency notices away from unattended inboxes. Update the operating agreement, authorizations and state records when ownership, management, tax treatment or signing authority changes.

Your next step is to open the official filing portal for the state where the company will genuinely operate. Record the exact formation form, current fee, registered-agent rule, approval procedure and first recurring deadline before entering application data. That state-specific worksheet turns this national sequence into a filing plan you can follow.

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