In Colorado, a DBA is officially called a "trade name.” The registration that lets any business operate publicly under a name that differs from its legal entity name or an owner's personal name. Sole proprietors, LLCs, corporations, and partnerships all need this registration when their operating brand doesn't match their formation documents, and every filing runs through the Colorado Secretary of State's online portal.
Colorado DBA at a glance
- In Colorado, a DBA is legally called a trade name. "DBA," "doing business as," and "trade name" all refer to the same registration under Colorado law.
- Any business entity that operates under a name different from its legal registered name must file a trade name with the Colorado Secretary of State.
- Filing is done online through the Colorado Secretary of State's filing portal. The current state filing fee is $20. Sole proprietors and general partnerships must renew annually; LLCs and corporations do not.
- A Colorado trade name does not create a new legal entity, does not provide liability protection, and does not give you exclusive statewide rights to the name. A federal trademark does.
- Search name availability through the Colorado Secretary of State's trade name database before filing to avoid conflicts.
- After registering, update your bank account, contracts, invoices, and any required local business licenses to reflect your trade name.
What is a Colorado DBA?
In Colorado, a DBA is officially called a trade name. A registration that lets a business operate publicly under a name different from its legal name. Registering one does not create a new legal entity, does not provide liability protection, and does not change your underlying business structure.
For a broader overview of how DBAs work across the country, see what a DBA is and how it works.
Colorado trade name vs. trademark vs. LLC: Key differences
| What it is | Creates a new legal entity? | Provides liability protection? | Grants exclusive name rights? | |
|---|---|---|---|---|
| DBA / Trade name | A registered operating name that differs from your legal name | No | No | No |
| Trademark | A federally or state-registered mark protecting a brand identifier | No | No | Yes — within the registered class and jurisdiction |
| LLC | A state-formed limited liability company | Yes | Yes — members are generally shielded from personal liability | No — unless the name is also trademarked |
| Corporation | A state-formed corporate entity | Yes | Yes — shareholders are generally shielded from personal liability | No — unless the name is also trademarked |
| Sole proprietor legal name | Your personal legal name used as the business name | No | No | No |
A Colorado trade name lets you brand your business under a chosen name but does not protect that name from being used by someone else. Only a federal trademark gives you nationwide exclusivity. If you're weighing a trade name against forming a Colorado LLC, the distinction that matters most is liability protection. A trade name provides none.
Why register a Colorado trade name?
Registering a trade name is a strategic step for many Colorado businesses that want to clarify their branding, streamline financial operations, or expand their market presence while maintaining their existing legal structure.
- Branding under a business name. The most common reason: you want to operate under a name that reflects your brand rather than your personal name or a generic legal entity name. A sole proprietor named Sarah Chen who runs a landscaping business as "High Country Grounds" needs a trade name to use that brand publicly, on signage, and in marketing.
- Opening a business bank account. Banks require a registered trade name before they'll open a business account or allow you to deposit checks made out to a name other than your legal name.
- Signing contracts under a business name. Contracts, leases, and vendor agreements signed under a trade name are legally valid only if the trade name is properly registered.
- Running multiple brands under one entity. An LLC or corporation can hold multiple trade names, each representing a different brand, without forming a separate legal entity for each one.
- Expanding into Colorado as a foreign entity. Out-of-state businesses registering to do business in Colorado can use a trade name if their home-state entity name is already in use here, or if they want to operate under a localized brand.
Who needs to file a Colorado trade name?
Any for-profit business not using its true entity name or, any individual not using their own legal first and last name, to conduct business in Colorado must file a trade name. See the Colorado Secretary of State's trade name FAQs for official guidance on filing requirements.
| Business type | Must file a trade name if… | Annual renewal required? |
|---|---|---|
| Sole proprietor | Operating under any name other than your own legal first and last name | Yes — annually |
| General partnership | Operating under any name other than the partners' surnames | Yes — annually |
| LLC | Operating under a name different from its Articles of Organization name | No — remains effective as long as the LLC stays in good standing |
| Corporation | Operating under a name different from its Articles of Incorporation name | No — remains effective as long as the corporation stays in good standing |
| Foreign LLC / foreign corporation | Operating in Colorado under a name different from its registered foreign entity name | Follows the same rules as domestic entities of the same type |
Sole proprietors and general partnerships
Sole proprietors must file a trade name if they want to operate under any name other than their own legal name. The same applies to general partnerships. Two or more people going into business under a name like "Summit Home Repairs" rather than "Williams & Torres" need a trade name registration. Without that registration, most banks won't let you deposit checks made out to your brand name.
For sole proprietors and general partnerships, a trade name is valid for one year and expires on the first day following the month of the anniversary of the original filing. Annual renewal is a compliance requirement.
LLCs and corporations
If you want to operate under anything different from the name filed at formation—a shortened version, a product-line brand, or a completely new name—you must file a separate trade name. It becomes an additional operating name only; it does not alter your Articles of Organization or Articles of Incorporation.
For LLCs and corporations, trade names do not require annual renewal. The trade name stays active as long as the business stays in good standing with the Colorado Secretary of State. If the company falls out of good standing, the trade name remains valid for one year after that date. If the company returns to good standing within that window, the expiration is canceled.
Foreign entities
If you've registered a foreign LLC or corporation to do business in Colorado and want to operate under a name that differs from your registered foreign entity name, you follow the same filing process as any domestic business. All registrations are filed with the Colorado Secretary of State; the filing requirements, fees, and portal path are identical regardless of where your entity was originally formed.
How to file a DBA in Colorado: Step-by-step
Every Colorado trade name filing runs through the Colorado Secretary of State's online portal. There is no paper option, no county clerk, and no in-person submission.
LegalZoom has helped millions of business owners with trade name filings across every state, including Colorado, and is rated 4.6 stars by more than 30,000 customers. If you'd prefer to have the filing handled for you, search Colorado business name availability as a first step, then explore LegalZoom's DBA filing service.
Step 1: Search Colorado trade name availability
Go to the Colorado Secretary of State's business database at sos.state.co.us. Enter your desired name and check all three boxes—"business name," "trade name," and "trademark"—to surface all registered and trademarked names in the state.
Colorado allows you to register a trade name identical to one already on record, but running a search catches obvious conflicts before they become your problem.
Step 2: Review Colorado trade name naming rules
Confirm your chosen name meets Colorado's filing requirements before submitting. The most common pitfalls:
- Don't include entity designators you don't have. Only include "Corporation," "Corp.," "Incorporated," "Inc.," "Limited Liability Company," or "LLC" if your business is actually that entity type.
- Don't imply a government affiliation. Names suggesting a federal or state agency connection are rejected.
- Certain regulated words require additional licensing. Words like "bank," "insurance," or "university" require approval from the relevant state regulatory body before the Secretary of State will accept the filing.
Step 3: Log in to the Colorado Secretary of State filing portal
Navigate to sos.state.co.us and go to the Business Organizations section. Select "File a business document." You do not need to create an account, but doing so lets you track filings and receive renewal reminders.
Your entity type determines which form you use:
- Sole proprietors select the "Statement of Trade Name of an Individual" form directly from the filing menu.
- LLCs and corporations search for their existing entity in the business database, open the entity's summary page, then select "File a Document" and choose "Statement of Trade Name." This ties the trade name directly to your existing entity record.
Step 4: Complete and submit the trade name form
You'll need to provide the trade name, your Colorado Secretary of State ID number if you have an underlying entity, your principal business address, and a brief description of the nature of the business.
To make the trade name effective immediately, leave the effective-date radio button set to "Yes" and leave the date field blank. For a future effective date, select "No" and enter the specific date. For entities, your legal name and address must match your existing Secretary of State records exactly. Mismatches can flag the filing. Review the Statement of Trade Name of a Reporting Entity help file for field-by-field instructions.
Step 5: Pay the filing fee
Filing costs $20, paid by credit or debit card through the portal. Approval is typically immediate once payment clears. Verify current fees at the Colorado Secretary of State's official fee schedule before filing.
How much does a Colorado DBA cost?
Filing a Colorado trade name costs $20. Annual renewal costs $5. Amendments and cancellations each carry a $10 fee. All fees are paid online. Confirm current amounts at the Colorado Secretary of State's fee schedule before filing.
How long does a Colorado trade name last, and how do you renew it?
For sole proprietors and general partnerships, a trade name must be renewed every year. The expiration date falls on the first day of the month following the anniversary of the original filing, so if you registered on October 10, your trade name expires on November 1 of the following year.
For LLCs and corporations, the trade name stays active as long as the business stays in good standing. If the company falls out of good standing, the trade name expires after one year; if the company returns to good standing within that window, the expiration is canceled.
Renewal window and process
You can begin renewal at any point during the three months before your expiration date. Log in to the Secretary of State's portal, locate your trade name record, and file the renewal form. The Secretary of State sends courtesy email reminders—one at the start of the renewal window and one a week before expiration—but you are ultimately responsible for renewing on time.
The renewal fee is $5.
What happens if your trade name lapses
An expired trade name cannot be renewed. You must file a brand-new Statement of Trade Name, paying the full $20 filing fee again. During any lapse, the name sits unprotected and another business could register it.
How to change or cancel a Colorado trade name
Amending a trade name: File an amendment when the trade name itself changes, your legal name changes, or your principal business address changes. The amendment fee is $10.
Canceling a trade name: File a Statement of Abandonment of Trade Name through the Secretary of State's portal rather than letting the registration lapse. The cancellation fee is $10. Canceling proactively keeps your public record clean and signals to customers, banks, and potential future registrants that the name is no longer in active use.
Colorado trade name naming rules and common mistakes
Familiarizing yourself with state-specific requirements can help ensure your trade name application is processed without unnecessary delays or rejections.
What Colorado does and doesn’t allow
Colorado does not require trade names to be distinguishable or unique. More than one person can file the same trade name—unlike LLC formation, where your entity name must be distinguishable from every other entity on file.
That said, Colorado enforces rules that will cause a rejection.
What you can't do:
- Use entity designators you don't have ("LLC," "Inc.," "Corp.," etc.)
- Imply a government affiliation
- Use regulated words like "Bank," "Credit Union," "Insurance," or "University" without sign-off from the corresponding state regulatory body
- Use profanity or otherwise unacceptable terms
What you can do:
- Choose any descriptive, geographic, or invented name that doesn't trigger the restrictions above
- Register a name already in use by another business
- Use a name that differs significantly from your legal entity name for branding or product-line purposes
The trade name vs. trademark distinction
A trade name registration is a public record filing, not a property right. It does not prevent another company with a superior right to use the name from prohibiting you from using it. Two businesses can share the same trade name in Colorado without either having automatic priority. Only a federal trademark, issued by the USPTO, grants nationwide exclusivity over a brand identifier within its registered class. A trade name registration is the floor, not the ceiling. Our trademark search services can help you confirm your mark is unique before you file.
Three common filing mistakes
Even with a simple process, a few missteps can trigger a rejection or create long-term compliance headaches.
- Filing a name already in widespread use. Colorado may allow duplicate trade names, but operating under a name a competitor is already using creates customer confusion and potential infringement claims if the other party holds trademark rights. The Secretary of State's search takes two minutes.
- Using a restricted word without required approval. Words like "bank," "insurance," "trust," and "university" require state regulatory approval before filing. Confirm with the relevant agency first.
- Failing to renew on time. Sole proprietors and general partnerships must renew annually. Missing the deadline means the trade name expires and cannot be renewed—you'll need to file a new one. Set a calendar reminder.
What to do after you register your Colorado DBA
Once your trade name registration is approved, your next steps involve aligning your business operations and documentation with your new operating name.
- Open or update your business bank account. Most banks require a copy of your filed trade name registration before they'll open an account or accept deposits under a name that isn't your legal name. Bring your Secretary of State confirmation.
- Update your contracts, invoices, and client-facing documents. Revise contract templates, invoices, receipts, and proposals to reflect the registered trade name consistently.
- Check local business license requirements. A Colorado trade name registration comes from the state, not your city or county. Many municipalities require a separate local business license reflecting your trade name. Check with your city or county clerk's office about Colorado business license requirements.
- Confirm any professional licensing obligations. Some regulated industries hold professional licenses in a specific legal name. Verify with the relevant state licensing board whether your trade name needs to appear on that license.
- Evaluate federal trademark protection. A trade name registration does not protect your name from being used by others. If your brand is central to your business value, consult a Colorado trademark attorney about federal registration through the USPTO.
- Keep your renewal obligations on the calendar. Sole proprietors and general partnerships must renew annually; LLCs and corporations must stay in good standing. Set your renewal window now.
Colorado DBA FAQs
How much does a DBA cost in Colorado?
Filing costs $20. Annual renewal costs $5. Amendments and cancellations each cost $10. Verify current amounts at the Colorado Secretary of State's official fee schedule before filing.
Can I have more than one trade name in Colorado?
Yes. A single legal entity can register multiple trade names, each requiring a separate $20 filing. There is no stated limit.
Does registering a Colorado trade name protect my business name from being used by others?
No. Colorado explicitly allows duplicate trade name registrations. Only a federal trademark through the USPTO grants nationwide exclusivity. Consider consulting a Colorado trademark attorney if name protection matters to your business.
Do I need a Colorado trade name if I'm already operating as an LLC with my desired brand name?
No. If your LLC's legal name on file with the Colorado Secretary of State is already the brand name you want to use publicly, no separate trade name registration is required.
Can a foreign LLC or out-of-state corporation file a Colorado trade name?
Yes. Foreign entities registered to do business in Colorado that want to operate under a name other than their registered foreign entity name must file a Colorado trade name through the Secretary of State's online portal. The process, fees, and requirements are identical to those for domestic entities.
Is a Colorado trade name the same as a fictitious business name or assumed name?
Functionally, yes. All three terms describe operating under a name other than your legal name. Colorado's official term is "trade name."
What happens if I operate under an unregistered trade name in Colorado?
You are violating Colorado's trade name statute. You will be unable to open a business bank account, sign enforceable contracts, or deposit checks under the unregistered name, and you have no public record establishing your use of the name.
What is the difference between a Colorado trade name and a federal trademark?
A Colorado trade name is a public record filing that lets you operate under a chosen name. It grants no exclusive rights. A federal trademark, registered through the USPTO, grants nationwide exclusivity over a brand identifier within its registered class. A trade name costs $20; trademark registration involves a more extensive application process and higher fees. Learn more about registering a trademark to protect your brand.
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