Colorado Secretary of State

Colorado Business Entity Search

Last updated August 31, 2026. Register data is refreshed nightly.

Quick answer

Search the Colorado business entity database by name to see whether a name is already registered. A no-match result means the name is not on file today, which is a preliminary answer rather than an approval: Colorado makes the final decision when the filing is reviewed.

What this checks

This search runs against a copy of the full Colorado business register that we hold and refresh every night, currently 3,101,392 records published by data.colorado.gov. A result comes back in well under a second and includes the matched entity’s name, file number, type, status and formation date, not just a yes or no.

Either way it is a preliminary check. Confirm anything you intend to rely on directly with the state, using the official Colorado search.

How to search the Colorado database yourself

The search on this page checks the same records. These steps are for running it yourself on the state’s site, which is also how you confirm anything before you file.

1. Open the search page

The Colorado business entity search is at coloradosos.gov/biz/NameCriteria.do.

2. Search on the distinctive part of the name

Enter the part that makes the name yours and leave off LLC, Inc or Corp. States ignore the designator when they compare names, so searching without it surfaces the conflicts that actually matter.

3. Read the results list

Colorado returns, for each match:

• the registered name of the business
• the state’s file or entity number, which is the reliable way to identify a record when names are similar

4. Open the record itself

The summary line is not the whole record. Opening it shows the filing history, the registered agent, and the dates, which is where you find out whether a conflicting business is still trading or was dissolved years ago.

How to read your result

• No match. No active record uses that name today. That is the starting point for a filing, not a reservation: the name is not held for you until you file or reserve it.
• Exact match. A registered entity already uses the name. Most states will reject a new filing that is not distinguishable from it.
• Similar match. Something close exists. States differ on how much difference is enough, and punctuation, entity designators such as LLC or Inc, and words like The are often ignored when they compare.
• Inactive or dissolved. A closed business can still hold its name for a period after it stops trading, so a dissolved record is not automatically a free name.

Filing in Colorado

• LLC filing fee: $50
• Typical processing: Immediate for online filings
• New business applications: 163,970 in the 52 weeks to July 25, 2026
• Most recent week reported: 3,700 applications in the week ending July 25, 2026, of which 820 were high-propensity applications, the ones Census expects to become employers
• Rank among the 51 jurisdictions by new applications: 12
• Year on year change: +43.4%

Keeping the name in Colorado

The rule is statutory rather than office policy. Colo. Rev. Stat. 7-90-601 sets the naming requirement for a limited liability company in Colorado. Guidance published by the office can change without notice; the statute is what a filing is measured against.

A name that is free today is not held for you until the formation filing is accepted, and nothing stops another filing arriving first. Most states offer a name reservation that holds it for a fixed period while you prepare. The reservation period and fee in Colorado are set by the state and change from time to time, so take them from the official Colorado register rather than from a figure quoted elsewhere. Colorado currently takes Immediate for online filings to process a formation filing, which is the gap a reservation exists to cover.

Once registered, the name stays yours only while the entity is in good standing. States differ on how often they require a report, and a missed filing can eventually lead to administrative dissolution and the name returning to the pool. Confirm the current requirement with the state directly.

One thing our copy of the Colorado register shows directly: of 2,640,124 names on it, 90,378 carry a word that also appears in a live federal trademark registration, or 3.42%. Live means registered and neither abandoned nor cancelled, on the USPTO record current to March 2024. A clear result from the state is not a clear result from the trademark register, and in Colorado that gap covers roughly one name in 29.

Common mistakes

Treating a clear search as approval

It is not. The state decides when it reviews the filing, and it applies rules a search box does not.

Searching the full name with its designator

Searching the distinctive part alone surfaces more conflicts, because that is the part states compare. LLC, Inc and Corp are ignored in the comparison.

Stopping at an exact match

A confusingly similar name can be refused even when nothing matches exactly. Punctuation, spacing and common words are usually disregarded when the state decides how close is too close.

Assuming a name check covers trademarks

A state register and the federal trademark register are separate. A name can be free in Colorado and still infringe a mark. We hold 3,374,058 federal marks alongside the state registers, so that is a question worth asking before you file rather than after.

Colorado Secretary of State business services

Business registrations in Colorado are held by the Colorado Secretary of State, which maintains the public register this page searches, accepts new filings, and issues the certificates a bank or a counterparty may ask you for. Contact them directly for anything that has to be official.

The office handles registration, not disputes. If a name is already taken, they will tell you it is unavailable but not who holds it beyond what the public record shows, and they will not advise on whether your name infringes someone’s mark.

Common questions about Colorado business entity searches

How do I check if an LLC exists in Colorado?

Search the Colorado business register by name using the search on this page, or directly on the state's own portal. If a matching record comes back, the entity exists and its status line tells you whether it is active. No match means no entity is registered under that name today.

How do I verify a company is registered in Colorado?

A company is registered in Colorado if it appears on the Colorado Secretary of State register with an active status. Search the name, open the record, and check the status field rather than the summary line: a dissolved company still appears in results but is no longer in good standing.

Does a clear search mean my Colorado business name is approved?

Not on its own. A no-match result means the name is not on the Colorado register today, which is a preliminary answer rather than approval. Colorado Secretary of State applies its own comparison rules when it reviews the filing, and can refuse a name that is confusingly similar to one already registered.

Can I look up who owns a business in Colorado?

The Colorado register shows the registered agent and, depending on the filing type, officers or organisers. It does not list members or shareholders for every entity, so the register identifies who accepts legal service rather than who owns the company.

How much does it cost to register a business name in Colorado?

Forming an LLC in Colorado costs $50 in state filing fees, and the state currently takes Immediate for online filings to process it. Reserving a name before filing is a separate, smaller fee. Current schedules are set by Colorado Secretary of State and change from time to time, so confirm them on the state's own site before you file.

Beyond the Secretary of State

The Secretary of State holds the entity filing, and that is only one of the records a Colorado business generates. If the entity search does not answer your question, one of these offices usually holds the rest.

• Colorado Department of Revenue — State tax registration and filings. A business registered with the Secretary of State is usually also known here.
• Colorado Department of Insurance — Licensing for insurance producers and agencies. A name containing insurance or assurance normally needs this office's consent before the Secretary of State will accept it.
• Colorado Public Utilities or Corporation Commission — Regulates utilities and, in some states, holds corporate filings separately from the Secretary of State.
• Colorado State Bar Association — Attorney licensing. Relevant if the business name implies legal services, which most states restrict.

Each of these keeps its own register with its own rules. A business can be in good standing with one and delinquent with another, and none of them talks to the others automatically.

Federal registers a Colorado search does not cover

The Colorado register is a state record. These are separate federal systems, and a clear result on one says nothing about the others.

• USPTO trademark search — The federal trademark register, which a state name check does not touch. A name can be free on a state register and still infringe a live mark.
• FinCEN beneficial ownership reporting — Most newly formed companies have a federal beneficial ownership filing obligation separate from anything the state requires.
• IRS employer identification number — The EIN is federal and separate from the state registration. The state register will not show it.
• SEC EDGAR — If the business files with the SEC, EDGAR holds filings no state register carries.

Searching beyond Colorado

Business names are registered state by state, so a name that is taken in Colorado may be free elsewhere, and a name free here may be taken where you actually intend to trade. If you plan to operate in more than one state you will need to check each of them and register as a foreign entity in the ones you are not formed in.

Other state searches: Connecticut, Delaware, District of Columbia, California, Arkansas, Arizona.

Terms that appear on a result are explained in our reference section, including good standing, registered agent and administratively dissolved.

Sources

• Colorado business entity search, the official register this page queries.
• Filing fees and processing times: Colorado Secretary of State, verified Mar 2026. Current schedules are published by the Colorado Secretary of State.
• Formation activity: Census Bureau Business Formation Statistics, retrieved via FRED at the Federal Reserve Bank of St Louis.
• Federal trademark data: United States Patent and Trademark Office, 3,374,058 live registrations cross-referenced against the state registers. Live excludes both abandoned applications and cancelled registrations.
• Register copy: bulk data published by data.colorado.gov, refreshed nightly.
• Office contact details: Colorado Secretary of State, verified against the office’s published contact page.
• Naming and reporting rules: confirmed against two independent sources before publication; anything the sources disagreed on is not stated here.
• Naming statute: Colo. Rev. Stat. 7-90-601, full text via Justia.
• State seal: public domain image via Wikimedia Commons.