Forming a business usually means legally establishing an entity that a state recognizes. In practice, that typically involves choosing an entity type, selecting the state where you will form, filing your formation documents with the state, appointing and maintaining a registered agent or registered office where required, obtaining an Employer Identification Number (EIN), preparing governing documents, handling tax and licensing obligations, and keeping up with ongoing compliance.

The right path depends on your goals, your industry, and where you operate.
Two federal resources frame the basics. The IRS explains that when you begin a business you must decide what form of business entity to establish, and that the form you choose determines which income tax return you file. The U.S. Small Business Administration (SBA) notes that the entity you select affects legal, financial, and operational issues. State requirements then vary, which is why this guide links to focused pathways for California, New York, and Pennsylvania. Omni Law P.C. also assists founders in New Jersey, discussed below.
What It Means to Form a Business
“Forming” a business is the act of creating a legal entity under a state’s law, separate from informally doing business under your own name. The IRS identifies the most common forms as the sole proprietorship, partnership, corporation, and S corporation, and describes the limited liability company (LLC) as a business structure allowed by state statute. Because each form is treated differently for tax purposes, the structure you select shapes the income tax return your business files.
Formation is distinct from simply operating. A sole proprietorship may require little or no state filing to begin, while a corporation or LLC comes into existence only after you file the required document with the state. Choosing to form a separate entity is often tied to goals such as separating personal and business liability, supporting outside investment, or clarifying ownership and governance.
Steps to Form a Business
While details vary by state and entity type, the formation process generally follows these steps:
- Choose an entity type. Weigh the common forms—sole proprietorship, partnership, corporation, S corporation, or LLC—against your tax, liability, and operational priorities.
- Select a state of formation. Many businesses form in the state where they primarily operate; some consider another state. Doing business in another state may require registering as a foreign entity.
- File your formation documents. Corporations typically file a certificate or articles of incorporation, and LLCs typically file articles of organization, with the state agency that handles business filings.
- Appoint and maintain a registered agent or registered office. Many states require a registered agent, registered office, or similar address for receiving legal and official notices.
- Obtain an EIN. After choosing a structure, the SBA notes you will need a tax identification number and the necessary licenses and permits.
- Prepare governing documents. An LLC operating agreement or corporate bylaws set out ownership, management, and decision-making.
- Handle tax and licensing obligations. Confirm federal, state, and local tax registrations, business licenses, and any industry-specific licenses or permits.
- Maintain ongoing compliance. Many states require periodic reports, statements, tax filings, or registered agent updates to keep the entity in good standing.
These steps are summarized from federal guidance; the SBA outlines the tax-ID and licensing step, and the IRS describes the entity-selection and tax-return consequences. State-specific filing details appear in the pathway sections below.
Choosing the Right Business Structure
Structure selection is one of the more consequential early decisions. The SBA highlights several factors that often drive the choice: your tax situation, your business activity, and the level of personal liability protection you want. It also points out that corporations, LLCs, limited partnerships, and limited liability partnerships each offer different levels of liability protection, and that the structure you pick affects both your personal exposure and the taxes your business pays.
The federal tax treatment follows from the form you choose. As the IRS explains, legal and tax considerations enter into selecting a business structure, and the form determines which income tax return you file. Because an LLC is a creature of state statute, the specifics of forming and maintaining one differ from state to state. For these reasons, many founders review their options with a business formation attorney or other adviser before filing.
Where Should You Form Your Business?
Many businesses form in the state where they primarily operate, because they may need to register there anyway. If you form in one state but do business in another, you may also need to register as a foreign entity in the second state. The sections below summarize the official starting points in four states: Omni Law P.C. frequently serves: California, New York, Pennsylvania, and New Jersey.
New York
The New York Department of State describes formally establishing a corporation, LLC, limited partnership, or other entity as the first step to doing business in New York State. Business, benefit, professional service, and not-for-profit corporations file a Certificate of Incorporation, while LLCs and professional service LLCs file Articles of Organization and limited partnerships file a Certificate of Limited Partnership. New York LLCs also have a publicaiton requirement after formation, which can affect timing and cost. The Department’s Division of Corporations maintains the official records and handles these filings. For a New York-focused walkthrough, see Omni Law P.C.’s New York business formation page and its New York business formation attorney page.
California
In California, the Secretary of State’s Business Entities Section processes filings, maintains records, and provides public information for corporations, LLCs, limited partnerships, general partnerships, and limited liability partnerships. It offers online services such as filings, name reservations, and orders for certificates and copies, and notes that general provisions governing most business entities are found in the California Corporations Code. For California-specific guidance, see Omni Law P.C.’s California business and corporate hub, the Los Angeles business formation page, and the California LLC article.
Pennsylvania
In Pennsylvania, the Department of State’s Bureau of Corporations and Charitable Organizations provides filing forms through its Business Filing Services portal, where you can register for-profit and nonprofit entities, reserve names, and register foreign associations to do business in the Commonwealth. Every domestic and foreign fliing entity must maintain a Pennsylvania registered office, which must be a street address, rather than a P.O. box, with limited exceptions for trademarks and fictitious names. Notably, the Department states that it cannot advise filers on their choice of business organization and recommends consulting legal and financial advisers before filing. For Pennsylvania-specific guidance, see Omni Law P.C.’s Pennsylvania business and corporate hub, the Philadelphia business formation page, and the Pennsylvania LLC article.
New Jersey
In New Jersey, the Division of Revenue and Enterprise Services handles business registration. For for-profit corporations, nonprofit corporations, limited partnerships, limited liability companies, and limited liability partnerships, the state describes verifying the business name, obtaining an EIN from the IRS, filing a certificate of formation or authorization, and filing the tax and employer registration form (Form NJ-REG) to obtain a Business Registration Certificate. Omni Law P.C. assists founders and owners forming and registering businesses across New Jersey, including entity selection, formation filings, and post-formation documents. For county-specific guidance, see the firm’s Essex County business formation, Bergen County business formation, and Hudson County business formation pages.
LLC vs. Corporation: Which Entity Type Makes Sense?
Two of the most common choices are the LLC and the corporation. The IRS treats the corporation and S corporation as distinct forms and describes the LLC as a structure allowed by state statute, while the SBA notes that each offers a different level of personal liability protection. The table below outlines general distinctions; the form that fits depends on your facts and your state.
| Feature | LLC | Corporation |
|---|---|---|
| Typical formation document | Articles of organization | Certificate or articles of incorporation |
| Liability protection | Can help shield members from personal liability for many business obligations | Can help shield shareholders from personal liability for many business obligations |
| Federal tax treatment | Flexible; may be disregarded, taxed as a partnership,or, by election, as a corporation, depending on ownership and elections | Taxed as a corporation; an S corporation election may allow pass-through treatment |
| Governing document | Operating agreement | Bylaws and board/shareholder resolutions |
| Often considered by | Owner-managed and closely held businesses | Businesses planning outside investment, stock-based equity, or a structure familiar to investors and acquirers |
For state-specific LLC walkthroughs, see Omni Law P.C.’s California LLC article and Pennsylvania LLC article. Because the LLC is governed by state statute, the formation document and ongoing requirements differ by jurisdiction.
Legal Documents You May Need After Formation
Filing your formation document is often the beginning rather than the end. The SBA points out that once you choose a structure you will need a tax identification number and the necessary licenses and permits. Depending on your entity and industry, you may also prepare:
- An EIN from the IRS for tax filings, banking, hiring, and other business administration needs.
- An operating agreement or bylaws setting out ownership, management, and decision-making.
- Organizational resolutions and ownership records documenting initial decisions and equity.
- Licenses and permits required at the federal, state, or local level for your activity.
- Registered agent or registered office records where the state requires them.
Common Business Formation Mistakes
Founders sometimes encounter avoidable issues during or after formation. Common examples include:
- Selecting an entity type without weighing tax and liability factors the SBA describes.
- Skipping governing documents such as an operating agreement or bylaws.
- Overlooking a required registered agent or registered office, which in Pennsylvania, for example, must be a street address.
- Forming in one state while operating in another without registering as a foreign entity.
- Missing periodic reports or statements needed to keep the entity in good standing.
Reviewing these items early, ideally with a qualified adviser, can reduce the chance of compliance problems later.
How a Business Formation Attorney Can Help
A business formation lawyer can help you weigh the legal, financial, and operational implications the SBA describes, compare entity types, and prepare formation and governing documents. Counsel can also help address multi-state considerations—such as where to form and where to register as a foreign entity—and set up a compliance calendar. This kind of support can be useful because, as Pennsylvania’s Department of State notes, a filing agency may not advise you on which business organization to choose and recommends consulting legal and financial advisers. A business formation attorney works with your specific facts rather than general rules.
Omni Law P.C. assists founders and owners with entity selection, formation filings, and post-formation documents. For attorney-focused help in New York, see the firm’s New York business formation attorney page.
Frequently Asked Questions About Forming a Business
What is the first step to forming a business?
Deciding on an entity type is usually the first step, because the form you choose shapes your filings and taxes. The IRS notes that you must decide what form of business entity to establish when you begin. In New York, the Department of State describes formally establishing the entity as the first step to doing business in the state.
Do I need an LLC or corporation?
Not necessarily. The IRS lists several common forms, and the SBA suggests weighing taxes, industry, and liability. The form that fits depends on your circumstances, so many owners review the options with an adviser.
Can I form a business in a state where I do not live?
Often, yes. Many states allow nonresidents to form entities, and businesses that do business in another state may need to register as foreign entities in additional states. State agencies such as the California Secretary of State handle these filings; the specific requirements vary by state.
Should I form my business in Delaware?
Some businesses consider Delaware, while many others form in the state where they primarily operate. There is no single answer; the choice depends on factors like where you operate, your tax situation, and your plans for investment. Forming outside your home state may still require registering as a foreign entity where you do business, so it is worth discussing with counsel.
Do I need an attorney to form a business?
An attorney is not required for every business formation, but legal guidance can help. Pennsylvania’s Department of State states that it cannot advise on the choice of business organization and recommends consulting legal and financial advisers before filing.
What documents do I need after forming an LLC?
Common post-formation items include an EIN, an operating agreement, ownership records, and any required licenses and permits. The SBA notes that after choosing a structure you will need a tax identification number and the necessary licenses and permits.
How long does it take to form a business?
Timelines vary by state, entity type, and filing method, and many states offer online filing that can be faster than paper. Because processing times change, check the relevant state agency, such as the New York Division of Corporations, for current information.
What is the difference between forming a business and registering to do business?
Forming a business creates the entity in its home state, while registering to do business, often called foreign registration, authorizes an existing entity to operate in another state. A company may form in one state and then register in others where it does business; state agencies like the California Secretary of State handle these filings.
Talk to Omni Law P.C. About Forming Your Business
If you are planning to form a business, Omni Law P.C. can help you evaluate entity options, prepare your filings, and organize the documents you may need afterward. For location-specific guidance, start with the firm’s California, New York, or Pennsylvania pages, or the firm’s New Jersey county pages for Essex County, Bergen County, and Hudson County. The firm works with your specific facts to help you move forward with informed decisions.