7 months ago · Updated 2 days ago
Before you file a single form or pay a single dollar, there is one step that every future LLC owner must complete first: run a Secretary of State business search for your state. If another registered entity already holds your desired name — or something similar enough to cause confusion — your filing will be rejected. More importantly, you typically lose the filing fee. This tool helps you research the name by providing links to all 50 official state portals, completely free, in under two minutes.
Each state maintains its own SOS business search portal, and no two work exactly the same way. Florida's database is called Sunbiz. Texas splits between the SOS and the Comptroller's office. Delaware runs through its dedicated Division of Corporations, while Wyoming has its own privacy-forward system at wyobiz.wyo.gov. Rather than hunting for the right government URL on your own, our tool sends you directly to the correct portal — regardless of what the state calls it. Whether you need to check LLC name availability, look up a vendor, verify a competitor, or confirm your own LLC's active status, this is your starting point.
This guide explains how to use the tool, how to interpret what you find, what "distinguishable" actually means under state law, and exactly what to do once your name comes back clear. Think of it as the complete resource for business entity search by state — covering everything before and after you hit search.
Secretary of State Business Search — Quick Facts
Everything you need to know before running your search
- Use the free SOS Business Search tool — all 50 states
- What is a Secretary of State business entity search?
- How to run a business name search — step by step
- How to read and interpret your search results
- What "distinguishable" means under state law
- What to do when your preferred name is already taken
- Key differences between the 50 state SOS portals
- Exact next steps after your name clears
- What does it cost to search, reserve, and form an LLC?
- Frequently asked questions
Secretary of State Business Search Tool — All 50 States
Select your state below. The tool will display the official Secretary of State portal, provide step-by-step instructions specific to that state's interface, and include a direct button to open the official search — all without requiring you to navigate government homepages on your own.
Secretary of State Business Search
Find the official business search portal for any U.S. state — instantly.
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What Is a Secretary of State Business Entity Search?
Every U.S. state maintains a live, public database of all registered business entities — LLCs, corporations, partnerships, non-profits, and sole proprietorships operating under a registered trade name. The Secretary of State business entity search is the public-facing interface for that database. Although most states run it through the SOS office directly, a few use a different agency: Texas has separate Secretary of State and Comptroller resources whose purposes differ, while Hawaii uses the Department of Commerce and Consumer Affairs. Regardless of the agency name, however, the function is identical — a searchable, official record of every entity registered to do business in that state.
Why the official portal matters — and why third-party tools fall short
Many websites offer "instant LLC name checks," but most of these rely on scraped or cached data that can lag days — or weeks — behind the actual SOS database. As a result, a name that appears available on a third-party site may already be taken in the official records. Consequently, using anything other than the official state portal creates a real risk of a rejected filing. Our tool links directly to the government source for every state, so your business entity search by state reflects real-time official records — not a third-party approximation.
The 4 reasons people run a Secretary of State business search
How to Run a Secretary of State Business Name Search — Step by Step
The process is broadly consistent across all 50 states, though the specific interface and filtering options vary considerably. Below is the standard workflow for a Secretary of State business name lookup that gives you reliable results — not a surface-level check that misses conflicts and leads to a rejected filing.
Steps 1–3: Finding and executing the search
Open the official state portal — not a third-party name checker
Use the tool above to go directly to your state's official SOS business search portal. Third-party "instant name check" sites frequently rely on stale data and should be avoided. Specifically, official agency records are the appropriate starting point. Registry search results do not reserve a name, establish trademark clearance or guarantee filing approval.
Search your exact desired name first — including "LLC"
Enter the full name exactly as you intend to register it, including the designator "LLC." If an exact active match appears, that name is unavailable. However, an exact match with a dissolved or cancelled entity may still be usable in some states — so check the entity status carefully before giving up on the name entirely.
Search the core keyword — without "LLC" or any designator
This is the step most people skip — and consequently the one that causes the most rejected filings. Your LLC name must be distinguishable from existing registered names, not simply different word-for-word. Therefore, search just the key phrase. For example, if you want "Sunrise Cleaning LLC," search "Sunrise Cleaning" and review all results. A business called "Sunrise Clean Co." might block yours, depending on your state's distinguishability standard.
Steps 4–6: Evaluating results and locking your name
Filter by entity type — then run the search again without the filter
Most portals allow you to filter results to show only LLCs. Start with that filter for a clean view. Afterward, re-run the same search without any filter to check corporations, LPs, and other entity types. In most states, name conflicts apply across all entity types — consequently, a corporation named "Blue Sky Inc." can still block "Blue Sky LLC" from being registered.
Check the entity status for every matching result
Active status means the name is off-limits. Inactive, Dissolved, Cancelled, or Expired status requires additional investigation — specifically, a direct call to the SOS office. Some states release dissolved names immediately; others hold them for a reinstatement window of 2–5 years. When status is anything other than Active, therefore, never assume the name is free without confirmation from the state directly.
Reserve your name before filing — optional but almost always worth it
Most states allow you to reserve an LLC name for 30–120 days for a $10–$25 fee, processed through the same SOS portal. Kentucky, for example, charges $15 to reserve an accepted name for 120 days; our Kentucky LLC name search guide explains the state's availability check, distinguishability rules, and reservation process. If you're not ready to file immediately, a reservation is inexpensive insurance. Someone else can legally register your exact name while you're preparing your operating agreement or shopping for a registered agent. A name reservation eliminates that risk entirely.
How to Read Your Secretary of State Search Results
Running the secretary of state corporation search is straightforward. Interpreting the results correctly, however, is where most first-time LLC owners make costly mistakes. Below is a breakdown of the standard fields you will see across most state portals — and specifically what each one means for your name availability decision.
What each field in the results actually means
| Result field | What it means | What to check |
|---|---|---|
| Entity Name | Full registered name including legal designator (LLC, Inc., LP, etc.) | Check for similarity — not just exact match. Designators alone don't make names distinguishable. |
| Entity Status | Active · Inactive · Dissolved · Cancelled · Expired · Delinquent | Active = name is unavailable. All other statuses require a direct SOS call before assuming the name is free. |
| Entity Type | LLC · Corporation · LP · LLP · Non-profit · Professional Corp, etc. | Conflicts apply across entity types in most states — an "Inc." can block an "LLC" with the same core name. |
| Formation / Filing Date | Date the entity was officially registered with the state | Older entities may have established common law trademark rights — relevant if you're considering a similar name. |
| Registered Agent | Person or service designated to receive legal documents for the entity | Useful for vendor research. For your own LLC, see our guide on what a registered agent does and why it matters. |
| Principal / Office Address | Business address on file with the state | Use when researching vendors or contractors to verify they have a legitimate in-state presence. |
| Annual Report Status | Whether the entity is current on its annual reporting obligations | Delinquent status often indicates an abandoned business — potentially relevant when considering name conflict resolution. |
| Document / Filing History | Full list of all state filings: formation, amendments, agent changes, dissolution | Available in most states. Specifically useful for determining whether a dissolved entity has been reinstated before. |
What a "zero result" search actually tells you
An empty search result is a strong indicator — but not a guarantee — that your name is available. Specifically, it confirms that no state-registered entity with that name currently appears in the official database. It does not confirm, however, that the name is distinguishable from all similar names, that no active federal trademark covers your chosen name, or that the name isn't restricted by state law (for example, words like "bank," "attorney," or "insurer" typically require additional approvals before the SOS will accept them).
What "Distinguishable" Actually Means — and Why It's the Most Misunderstood Rule in LLC Formation
Every state LLC statute requires your name to be "distinguishable upon the records" from all other registered entity names. Notably, this is not the same as "different" or "unique." The legal standard is whether an ordinary person could confuse your business with an existing registered entity. Understanding this distinction is critical before you file — because the SOS filing officer will reject your application if your name isn't sufficiently distinguishable, and you will typically lose the filing fee in the process.
What counts — and what doesn't
Specifically, most states follow predictable patterns when evaluating distinguishability. Entity designators (LLC vs. Inc.), articles (The, A, An), punctuation differences (& vs. "and"), and minor word variations (plural vs. singular) are generally ignored during the comparison. Geographic modifiers and industry descriptors, however, are typically sufficient to make two names distinguishable. The table below illustrates the most common scenarios.
| Change you made | Distinguishable? | Why |
|---|---|---|
| Changed "LLC" to "Inc." | Usually NO | Entity designators alone do not make names distinguishable in most states |
| Changed "&" to "and" | Usually NO | Punctuation differences are typically stripped during the comparison |
| Added "The" before the name | Usually NO | Articles (The, A, An) are ignored in most state name comparisons |
| Changed "Services" to "Service" | Usually NO | Minor plural/singular variations generally do not count as distinguishable |
| Added a geographic modifier ("Austin," "Texas," "Northwest") | ✓ Usually YES | Geographic modifiers are generally sufficient — however, verify with your specific state's rules |
| Added an industry descriptor that changes business nature | ✓ Usually YES | "Blue Sky Consulting LLC" vs. "Blue Sky Landscaping LLC" — different industry words make names distinguishable |
| Entirely different core word, similar theme | ✓ YES | "Summit Peak LLC" and "Mountain Top LLC" are distinguishable — similar theme, but different words entirely |
What to do when your chosen name is borderline
If your desired name is similar to an existing one but you believe it meets the distinguishability standard, you have two practical options. First, add a clear differentiating word to eliminate any ambiguity before you file. Second, submit a pre-filing name availability inquiry to your state's SOS office — most states offer this at no charge, and written confirmation gives you certainty before you pay the filing fee. Additionally, some states (notably Delaware and Wyoming) publish explicit written guidelines on what qualifies as distinguishable, which makes the analysis considerably more predictable. For state-specific naming rules, see the Step 1 section of your state formation guide.
Your LLC Name Is Already Taken — Here Are Your Concrete Options
Finding a conflict in your Secretary of State business search is frustrating — but discovering it now is far better than after you file and pay. Below are your genuine options when a business name search returns a conflict, along with honest tradeoffs for each.
Option 1 — Modify the name to make it clearly distinguishable
Key Differences Between the 50 State SOS Business Search Portals
All 50 Secretary of State business search portals serve the same core function. In practice, however, they differ significantly in user experience, data depth, search options, and what information they display. Below are the most important variations — particularly for the highest-volume formation states and the ones with the most unique requirements.
High-volume states with notable portal differences
| State | Portal name | What makes it unique | Formation guide |
|---|---|---|---|
| Florida | Sunbiz.org | One of the fastest and most data-rich portals in the U.S. Real-time updates, full document history, annual report status displayed immediately. Additionally, officer and registered agent information is publicly visible. | Florida LLC guide → |
| Texas | Texas SOS + Comptroller (COA) | Texas splits across two systems. The SOS handles filings; the Comptroller's Certificate of Account search, however, is the most useful tool for confirming active status and franchise tax compliance. Our tool links to the most relevant portal for name availability. | Texas LLC guide → |
| California | BizFile Online (SOS) | Allows direct ordering of certified formation documents. Notably, California imposes strict name restrictions — words like "bank," "trust," and "insurance" require written approval from additional state agencies before the SOS will accept an LLC filing using them. | California LLC guide → |
| Delaware | Delaware Division of Corporations | The gold standard for corporate transparency. Search by name or entity number, view complete document filing history, and confirm good standing in seconds. Expedited filing options down to same-day processing are available for additional fees. | Delaware LLC guide → |
| New York | NY DOS Corporation & Business Entity DB | Straightforward name search with entity status clearly displayed. Importantly, however, New York has a mandatory newspaper publication requirement for new LLCs — this step adds $500–$2,000 to formation costs and is not tracked by the DOS search itself. Many first-time filers are surprised by this requirement. | New York LLC guide → |
| Wyoming | WyoBiz (SOS) | Wyoming deliberately limits the data displayed about LLC members — by design, as part of its privacy-first LLC statute. As a result, the search confirms existence and status but shows minimal ownership information. This makes Wyoming one of the top choices for privacy-conscious LLC owners. | Wyoming LLC guide → |
| New Jersey | NJ Division of Revenue — Name Search | Searches registered LLCs and trade names (DBAs) together in a single query — which is more comprehensive than most states. Consequently, a New Jersey search is one of the most thorough for catching all potential name conflicts, including operating trade names that don't show up in most other states' searches. | New Jersey LLC guide → |
| Montana | MT SOS — BizSOS | Montana is uniquely popular for car registration LLCs — specifically, people form Montana LLCs to register vehicles and legally avoid sales tax in high-tax states. No state income tax makes it additionally attractive for holding companies and privacy structures. | Montana LLC guide → |
What Does It Cost to Search, Reserve, and Form an LLC?
The Secretary of State business name search is always free. Everything after that, however, has a cost — and the range is wide depending on your state and choices. Below is an honest breakdown of what you will actually spend from first search to a fully formed, compliant LLC.
Full LLC formation cost breakdown
Cheapest vs. most expensive states to form an LLC
For the full picture — including annual report fees, franchise taxes, and ongoing compliance costs — see our complete guide to LLC costs.
Your LLC Name Is Available — The Exact Next Steps
The secretary of state business search came back clear. No conflicts. Your name is available. Here is the precise sequence from that moment to a fully formed, compliant LLC — and specifically why the order of these steps matters more than most people realize.
Immediately after the search: secure and prepare
Filing day and beyond: forming and running your LLC
Follow your state's step-by-step LLC formation guide
Once your SOS business name search comes back clear, the next step is following the dedicated formation guide for your state. Each guide covers the current filing fee, exact process, official processing times, registered agent requirements, annual report deadlines, and any state-specific rules — all verified and updated for 2026. Select your state below or browse all 50 state LLC guides →
The Secretary of State business entity search is the non-negotiable first step before you file any LLC. Use the tool on this page to open your state's official portal, run a thorough name check — not just an exact-match search — and confirm your name is clearly distinguishable from every active registered entity. Once it clears: reserve the name, appoint a registered agent, file your Articles of Organization, sign an operating agreement, and get your EIN. The full process takes one to two weeks in most states and costs between $79 and $500 depending on state fees. Use our LLC Cost Calculator to confirm your exact total before you begin.
Frequently Asked Questions — Secretary of State Business Search
Is the Secretary of State business entity search free?
Yes — the Secretary of State business entity search is completely free in all 50 states. These are public government databases accessible to anyone with an internet connection, with no account, subscription, or payment required. The only costs involved are optional: a name reservation fee ($10–$25) if you want to hold your name while you prepare to file, and the state LLC formation filing fee when you're ready to register. For exact fee amounts by state, use our LLC Cost Calculator.
Does a clean SOS search guarantee my LLC name is available?
A clean Secretary of State business search strongly indicates that no state-registered entity holds that name — however, it's not a complete guarantee. Specifically, the search does not cover: (1) federally registered trademarks at the USPTO, which can block use of a name regardless of state registration status; (2) common law trademark rights, which arise from actual business use without formal registration; and (3) names currently reserved by other applicants in the SOS queue. As a result, the SOS search is the essential first step — but also run a quick trademark search at tmsearch.uspto.gov before fully committing to your name.
Can I use an LLC name that belongs to a dissolved business?
It depends on the state and how recently the dissolution occurred. In many states, a dissolved entity's name becomes available immediately upon dissolution. In others, however, the name is held for a reinstatement period — typically 2–5 years — during which the original owner can revive the LLC and reclaim it. Consequently, the safest approach is to call your state's SOS business division directly and ask. Most offices will confirm availability over the phone in under five minutes, which is far preferable to assuming it's clear and having your filing rejected.
Can a corporation or Inc. block my LLC name?
Yes. In most states, name conflicts apply across all entity types — not just LLCs. Corporations, LPs, LLPs, and registered non-profits with similar names can prevent your LLC from being registered if the names are not distinguishable. The entity designator alone — LLC versus Inc., for example — does not make two names distinguishable in the eyes of most state SOS offices. Therefore, when running your business entity search by state, always search across all entity types rather than filtering to LLCs only.
How long does a Secretary of State business name search take?
The basic search takes about two minutes. A thorough search — specifically one that checks variations, keyword combinations, and similar names across all entity types — takes approximately 15–20 minutes. That additional time is well worth it: a rejected filing due to a name conflict not only costs you the filing fee, but also delays your LLC formation while you start the naming process over. Consequently, treating this as a 20-minute task rather than a 2-minute one prevents a potentially expensive mistake.
What's the difference between this SOS search tool and the LLC Name Availability Checker?
The Secretary of State business search opens the full official government database and shows detailed entity records — name, type, status, registered agent, filing date, and document history. Our LLC Name Availability Checker, however, runs a targeted pass/fail check optimized specifically for LLC name conflicts — faster, but with less detail. For the most thorough pre-filing check, use both tools together: start with the Name Availability Checker for a quick confirmation, then use this SOS tool to examine any similar results in full detail. Additionally, neither tool replaces a USPTO trademark search for federal brand protection.
Can I look up any business in the Secretary of State database?
You can look up any state-registered business entity — LLCs, corporations, LPs, LLPs, and registered non-profits. These records are entirely public. However, you won't find: sole proprietorships operating without a registered trade name (they don't file with the SOS), federally chartered entities such as national banks, or businesses registered in other states that haven't filed as foreign entities in the state you're searching. If you're researching a vendor or contractor and can't find them in the database, they may consequently be operating as an unregistered sole proprietor — or alternatively, they may be registered in a different state.
Do I need to search all 50 states before forming my LLC?
For most LLC owners, no. LLC names are registered state by state — therefore, your name only needs to be distinguishable from entities registered in the specific state where you're forming. However, if you plan to operate nationally, sell in multiple states, or register as a foreign LLC in additional states, you should check availability in each state where you intend to register. Additionally, for comprehensive national brand protection, a federal USPTO trademark search is considerably more relevant than searching all 50 SOS databases individually. See our guide on the best state to form an LLC if you're weighing multi-state formation strategies.