Before you invest in signage, marketing, or formation paperwork, make sure your business name is actually available. California requires every registered entity name to be distinguishable from names already on file, so a quick name search can save you a rejected filing and weeks of delay. This guide shows you how to check name availability the same way the Secretary of State does.

Why Check a Business Name First?

The California Secretary of State rejects formation filings if the proposed name is already on record or is deceptively similar to an existing entity. A quick name search before you file saves you the filing fee, the wait, and the resubmission.

A name search also helps you:

• Spot competing businesses using the same or a confusingly similar name
• Check whether your desired name works for an LLC, corporation, or LP
• Decide if you need a trademark search in addition to the state registry

How to Check a California Business Name

1. Search the official entity database. Use bizfile Online to search your proposed name. If an identical or near-identical name appears, it is likely unavailable.
2. Try variations. Search with and without designators (LLC, Inc.), with abbreviations, and with common word swaps (e.g., “Co” vs “Company”).
3. Check DBA names. A business may trade under a fictitious name filed at the county level. See our California DBA Search guide.
4. Consider trademarks. State registration does not clear federal trademarks. Search the USPTO database if brand protection matters to you.
5. Reserve the name (optional). You can reserve an available name for 60 days by filing a Name Reservation Request with the Secretary of State for a small fee.

California Business Naming Rules

Entity type	Name requirement
LLC	Must include “Limited Liability Company”, “LLC”, or “L.L.C.”
Corporation	Must include “Corporation”, “Incorporated”, “Company”, or an abbreviation (Inc., Corp., Co.)
Limited partnership	Must include “Limited Partnership”, “LP”, or “L.P.”
All entities	Cannot be deceptively similar to an existing registered name
Restricted words	Words like “Bank”, “Trust”, or “Insurance” require extra approvals

Name Search vs. Company Search

A business name search checks whether a name is free to use. A company search pulls up the full record of an existing business. If you are researching a company that already exists, start from our California Company Search home page instead.

Related California Business Searches

Why Check a Business Name First?

California requires every registered entity name to be distinguishable from names already on file. If you file formation paperwork with a name that is taken or too similar to an existing one, the Secretary of State will reject it. That means you lose the filing fee and weeks of time. A quick name search before you file avoids this entirely.

Checking a name is also useful when you are researching a business. If you know the name but not the entity number, a name search is how you find the record in the first place.

How California Decides If a Name Is Available

The Secretary of State applies a “distinguishable” standard. A proposed name is not available if it is the same as, or deceptively similar to, a name already on file. Here is what that means in practice:

• Exact matches are rejected. You cannot register a name identical to an existing entity.
• Deceptively similar names are rejected. Minor changes in punctuation, spacing, or designators usually do not make a name distinguishable.
• Designators are ignored. Words like “LLC,” “Inc.,” “Corp.,” and “The” generally do not make a name distinguishable on their own.
• Restricted words need approval. Words like “bank,” “trust,” “insurance,” and “university” may require additional approval before you can use them.

Name Search vs. Name Reservation

These are two different things, and it helps to know the difference:

Action	What it does	Cost
Name search	Shows you what names are already on file. Informational only.	Free
Name reservation	Holds a name for a set period so no one else can take it while you prepare your filing.	Fee applies

A name search is the right first step. If the name is clear and you are ready to file, you can proceed directly. If you need time to prepare your formation documents, consider reserving the name so it stays available.

Entity Names vs. DBAs vs. Trademarks

A common source of confusion is the difference between an entity name, a DBA, and a trademark. They are separate things with separate rules:

• Entity name. The legal registered name of a corporation or LLC, filed with the Secretary of State. Protected statewide against other entity names.
• DBA (fictitious business name). A trade name filed at the county level. Does not create a legal entity and offers only county-level notice.
• Trademark. A brand identifier registered with the USPTO (federal) or the state. Protects the brand in commerce, separate from entity registration.

Registering an entity name does not automatically give you a trademark, and a DBA does not protect your name statewide. If brand protection matters, consider a trademark in addition to your entity registration.

Name Search Tips

1. Search the distinctive part of the name. Drop designators like “LLC” or “Inc.” to see the core name.
2. Try common variations. Test plurals, abbreviations, and common misspellings to catch similar names.
3. Check both corporations and LLCs. A name can be taken by either entity type.
4. Look beyond exact matches. Deceptively similar names can still block your filing.
5. Have backup names ready. Keep two or three alternatives in case your first choice is taken.

Common Name Search Mistakes to Avoid

Many rejected filings happen because of avoidable name search mistakes. Here are the most common ones and how to sidestep them:

• Searching only the exact name. If you search only your exact proposed name, you may miss deceptively similar names that would still block your filing. Always search the distinctive part and common variations.
• Ignoring designators. Words like “LLC,” “Inc.,” and “The” do not make a name distinguishable. Don’t assume adding one clears a conflict.
• Checking only one entity type. A name can be taken by a corporation even if no LLC has it, and vice versa. Check both.
• Assuming a DBA protects the name. A DBA is county-level only and does not prevent another entity from registering the same name statewide.
• Waiting too long to file. A name that is available today can be taken tomorrow. If your name is clear, file promptly or reserve it.

Name Availability vs. Trademark Clearance

A name can be available as an entity name but still conflict with someone’s trademark. These are separate systems:

Check	What it covers	Where to check
Entity name availability	Whether the name is taken by another registered entity	Secretary of State database
Trademark clearance	Whether the name conflicts with a registered brand	USPTO (federal) or state trademark database

Before you invest heavily in a brand, consider checking both. An entity name registration does not protect you from a trademark claim, and a trademark does not prevent someone from registering a similar entity name.

How Name Conflicts Are Resolved

When two businesses want similar names, California has a clear set of rules for resolving the conflict. Understanding these rules helps you assess your chances and plan accordingly:

• First to file wins. In general, the first entity to register a name has priority. If your name is available when you file, you get it.
• The Secretary of State decides. If there is a question about whether names are deceptively similar, the Secretary of State’s office makes the determination during the filing review.
• You can appeal a rejection. If your filing is rejected for a name conflict, you can contact the Secretary of State’s office to discuss the decision or choose a different name.
• Trademark disputes are separate. Even if you register an entity name, a trademark holder can challenge your use of the name in commerce. Entity registration does not override trademark rights.

Choosing a Strong Business Name

Beyond availability, a good business name should serve your brand. Here are practical tips for choosing a name that works:

• Keep it memorable and easy to spell. Complex or unusual spellings make it harder for customers to find you.
• Avoid names that limit you. A name tied to one product or location can become a constraint as your business grows.
• Check the domain name. Even if the entity name is available, you want a matching or close domain for your website.
• Check social media handles. Consistent branding across platforms matters for marketing.
• Say it out loud. Make sure the name sounds good and is easy to say in conversation and on the phone.

Name Search for Different Entity Types

The name search process is the same regardless of entity type, but the naming rules differ slightly:

Entity type	Required designator	Example
LLC	“LLC,” “L.L.C.,” or “Limited Liability Company”	Golden Gate Coffee LLC
Corporation	“Inc.,” “Corp.,” “Corporation,” or “Incorporated”	Pacific Crest Holdings Inc.
Limited partnership	“LP” or “Limited Partnership”	Bayview Development LP
LLP	“LLP” or “Limited Liability Partnership”	Smith & Associates LLP

The designator must be included in the registered name, but you can drop it when searching to widen your results. The database will match the distinctive part of the name regardless of the designator.

Frequently Asked Questions

How do I know if a business name is available in California?

Search the name in the Secretary of State’s free database. If no identical or deceptively similar entity appears, the name is likely available – but the final decision is made when your filing is reviewed.

Can I reserve a business name?

Yes. File a Name Reservation Request (Form LLC-1 for LLCs, or the corporate equivalent) to hold an available name for 60 days for a small fee.

Does a DBA protect my business name?

No. A DBA (fictitious business name) registration does not grant exclusive rights to a name. Entity registration and trademarks provide stronger protection.

What if my name is taken in another state but not California?

You can generally register it in California if no conflicting California entity exists – but check federal trademarks and the other state if you plan to expand there.

How do I reserve a business name?

You can reserve a name by filing a Name Reservation Request with the Secretary of State and paying the $10 fee. The reservation holds the name for 60 days, giving you time to prepare your formation documents. Reservations can be renewed.

Can I use a name that is similar but not identical?

It depends on how similar. The Secretary of State rejects names that are deceptively similar to existing ones. Minor changes in punctuation, spacing, or designators usually do not make a name distinguishable. If you are unsure, search the distinctive part of both names and compare.

CaliforniaCompanySearch.us is an independent website and is not affiliated with the California Secretary of State or any government agency.