Running a business under a trade name that isn't your legal business name requires a DBA. Texas officially calls this document an assumed name certificate. Where you file depends on your business structure: sole proprietors and general partnerships file with the county clerk, while LLCs, corporations, and other registered entities submit Form 503 to the Texas Secretary of State. This article covers the complete process—from searching for an available name to submitting the correct form, paying the right fee, and avoiding the errors that get certificates returned.
What is a DBA in Texas?
A DBA in Texas, short for "doing business as," is officially called an assumed name certificate. Filing one allows a business or individual to operate under a trade name that differs from their legal name.
Say you're a sole proprietor named Maria Gonzalez running your floral business as "Austin Bloom Floral." An assumed name certificate makes that trade name official and lets you use it for signage, advertising, contracts, and bank accounts.
One thing a Texas DBA does not do: it doesn't create a new legal entity. Filing an assumed name certificate changes nothing about your business structure, tax obligations, or personal liability. Maria Gonzalez is still a sole proprietor whether she operates as herself or as Austin Bloom Floral, and she's still personally responsible for any debts or legal claims the business incurs. If liability protection matters, that requires forming a separate legal entity like an LLC.
Texas also does not reject assumed name filings based on name conflicts—filing first doesn't lock out other businesses from using the same name. If exclusive rights to your trade name matter, trademark registration is a separate process. An assumed name certificate won't give you that protection.
Who needs to file a Texas assumed name certificate?
Most Texas businesses operating under any name other than their exact legal name must file an assumed name certificate. You need to file if you fall into any of these categories:
- Sole proprietors operating under any name other than their full legal name. If your name is James Park and you're doing business as "Park's Handyman Services," you need to file.
- General partnerships using any name other than the surnames of all partners. A partnership between Sarah Lee and Tom Cruz operating as "Lee-Cruz Consulting" requires a filing.
- LLCs, corporations, limited partnerships, and other registered entities conducting business under any name other than the one on file with the Texas Secretary of State. If you already have an LLC and want to add a trade name, see the guide on adding a DBA to your existing LLC.
- Foreign entities registered to transact business in Texas that operate under an assumed name here.
You do not need to file if your business operates exclusively under its exact registered legal name.
"Operating under" a name is interpreted broadly. Using a trade name on your website, invoices, signage, or advertising typically triggers the filing requirement, even if you haven't opened a separate bank account under that name yet.
County clerk vs. Texas Secretary of State: Where do you file?
Your business structure determines your filing location. There's no choosing based on preference or convenience.
| Business type | Where to file |
|---|---|
| Sole proprietor | County clerk only |
| General partnership | County clerk only |
| LLC (domestic) | Texas Secretary of State (Form 503) |
| Corporation (domestic) | Texas Secretary of State (Form 503) |
| Limited partnership | Texas Secretary of State (Form 503) |
| Foreign entity (out-of-state) | Texas Secretary of State (Form 503) |
Sole proprietors and general partnerships file at the county level—one filing per county where you conduct business. Texas has 254 counties, and if you operate in more than one, you need a separate filing in each.
Registered entities file Form 503 directly with the Texas Secretary of State. That single state-level filing satisfies the state requirement. However, some counties may also require a local filing depending on where your business operates, so confirm with the relevant county clerk before assuming one filing covers everything.
The most common mistake filers make is going to the wrong office. A sole proprietor who submits Form 503 to the Secretary of State won't satisfy the county filing requirement. A registered entity that only files at the county level hasn't met the state requirement. Match your business structure to the correct filing path before you do anything else.
How to file a DBA in Texas: Step-by-step
There are a few steps that you'll need to take to ensure that your Texas DBA filing is successful.
Step 1: Search for your assumed name
Before filling out any form, search the name you want to use. Texas does not reject assumed name filings because another business uses the same name, but searching first helps you avoid marketplace confusion and spot potential trademark conflicts early.
For state-level filings, search the Texas Secretary of State's SOSDirect database. For county-level filings, check the county clerk's records in each county where you plan to operate. A clean search result does not give you exclusive rights to the name—that requires separate trademark registration.
Step 2: Determine your filing location
Sole proprietors and general partnerships file with the county clerk in each county where they conduct business. Registered entities file Form 503 with the Texas Secretary of State. Some registered entities may also need a county-level filing depending on where they operate. Refer to the table above if you need a quick reference.
Step 3: Complete the required form
For state filers, complete Texas Form 503. The key fields are:
- Your assumed name
- Your exact legal entity name
- Your entity type and Secretary of State file number
- Your jurisdiction of formation
- Your principal office address (no P.O. boxes)
- Your intended duration (up to 10 years)
- Every Texas county where you'll use the name, or "All" if you operate statewide
The next section walks through each field in plain English.
For county filers, the form comes directly from the county clerk's office in each county where you do business. Format and requirements vary slightly by county, so confirm the details locally before you start.
Step 4: Submit and pay the filing fee
State filers submit Form 503 with a $25 filing fee. You can file online through SOSDirect, by mail, or in person. If mailing, send to P.O. Box 13697, Austin, TX 78711-3697.
County filers pay a fee set by each county, typically ranging from $14 to $25 or more for the first page, with additional per-page charges in some counties. Confirm the exact amount with your county clerk before submitting—paying the wrong amount will delay your filing.
Step 5: Receive your certificate
Once approved, the Secretary of State or county clerk issues your assumed name certificate. Keep a copy—you'll likely need it to open a business bank account under your trade name and may need it when signing contracts. The certificate is valid for 10 years from the filing date. Note that expiration date now and plan to refile before it lapses.
How to complete Texas Form 503: Field-by-field guide
Form 503 is the official assumed name certificate for registered entities filing with the Texas Secretary of State. Here's what each field actually asks for, in plain English.
Item 1: Assumed name. Enter the trade name you want to use, spelled exactly as you want it to appear on your certificate.
Item 2: Legal entity name. Enter the legal name of the entity exactly as it appears in the records of the Texas Secretary of State or on your organizational documents. Even a minor difference—a missing "LLC" or a misspelled word—can cause the form to be returned.
Items 3 and 4: Entity type and file number. Select your entity type from the options listed on the form, which include for-profit corporation, limited liability company, nonprofit corporation, limited partnership, professional corporation, and limited liability partnership, among others. Then enter your Texas Secretary of State file number, which you can find on your formation documents or by searching SOSDirect.
Item 5: Jurisdiction. Enter the state or country where your entity was formed. For most filers, this will be "Texas."
Item 6: Principal office address. Provide the street address of the entity's principal office. No P.O. boxes—the form requires a physical address.
Item 7: Period of duration. Specify how long you want the assumed name to be effective. The maximum is ten years from the filing date. Most filers choose the full ten-year term to avoid early expiration.
Item 8: County or counties. You must specify where in Texas you will use the assumed name:
- "All"—check this if you will use the assumed name anywhere in Texas, or if you're unsure which counties you'll eventually operate in. This is the safest choice for most businesses.
- "All counties with the exception of the following counties"—use this if you want statewide coverage but need to exclude specific counties.
- "Only the following counties"—use this only if you will operate exclusively in specific counties and are certain you won't expand. If you later operate in an unlisted county, you'll need a new certificate.
Execution
An authorized person must sign the certificate—typically a member or manager for an LLC, or an officer for a corporation. No notarization is required for state filings. Signing a certificate that contains a materially false statement is a criminal offense under Texas Penal Code § 37.10, so review every field before you sign.
For the authoritative version of these requirements, consult the official Form 503 instructions published by the Texas Secretary of State before submitting.
Texas DBA fees, processing times, and renewal
| Detail | State filing (Form 503) | County filing |
|---|---|---|
| Filing fee | $25 | Varies by county (approx. $14–$25+) |
| Processing time | 1–2 business days online; up to 10 days by mail | Same day (in person) to a few days |
| Certificate validity | Up to 10 years | Up to 10 years |
| Renewal | File a new Form 503 before expiration | File a new certificate with the county clerk |
| Abandonment (cancellation) | Form 504; $10 fee | File with the county clerk |
A few additional cost details:
- Fees paid by credit card through SOSDirect carry a 2.7% convenience fee. Pay by check or money order to avoid the surcharge.
- Expedited processing at the state level adds $25 and is optional, but worth considering if you're on a deadline.
- There are no renewal discounts. Each renewal is a new filing at the same rate.
For county filers, confirm the exact fee with your county clerk before submitting. Most counties do not offer partial refunds, so you'll pay the full fee again if your filing is rejected.
How to renew a Texas assumed name certificate
There is no separate renewal form. To renew, file a new assumed name certificate—for state filers, a fresh Form 503 and the $25 fee, submitted within six months of the original certificate's expiration.
Mark your expiration date now. The Texas Secretary of State and most county clerks do not send reminders. If the certificate expires without renewal, your legal right to use that name terminates. A lapsed certificate can create complications with your bank, contracts signed under the trade name, and anyone who searches your assumed name in the public record.
How to cancel or amend a Texas DBA
If you stop using your assumed name before it expires, you can formally retire it. A registered entity files a Certificate of Abandonment of Assumed Name (Form 504) with the Secretary of State for a $10 fee. County-level filers file an abandonment form with the county clerk.
There is no amendment procedure for an assumed name certificate. If there is a material change in the information on the certificate—a change in your principal office address, the counties where you operate, or your entity's legal name—you must file a new certificate within 60 days of the change.
DBA vs. LLC in Texas: Which makes more sense?
A DBA and an LLC solve different problems. A DBA lets you operate under a trade name. An LLC creates a separate legal entity that shields your personal assets from business debts and lawsuits.
| Factor | DBA only | LLC |
|---|---|---|
| Liability protection | None | Yes—personal assets generally protected |
| Cost to establish | ~$25 state fee (or county equivalent) | ~$300 Texas state filing fee |
| Ongoing complexity | Minimal | Annual reports, operating agreements, recordkeeping |
| Trade name exclusivity | None—others can use the same name | None—trademark required for exclusivity |
| Creates a new legal entity | No | Yes |
A sole proprietor who wants a professional trade name but isn't ready to formalize their structure can file an assumed name certificate and start operating under that name almost immediately. It's fast, inexpensive, and requires minimal upkeep.
But if liability protection matters—and for most business owners it should—a DBA won't get you there. Forming an LLC separates your personal finances from your business obligations. And if you already have an LLC and simply want to market under a different name, you can do both: form the LLC, then file an assumed name certificate under it. For more on that path, see adding a DBA to your existing LLC.
If you're weighing the full picture of forming a Texas LLC, learn more about forming a Texas LLC.
Common Texas DBA filing mistakes to avoid
Even experienced business owners make mistakes that can cause their Texas DBA filing to be rejected. These are some of the most common mistakes so you can avoid making them yourself.
- Filing at the wrong office. Sole proprietors and general partnerships must file with the county clerk. Submitting Form 503 as a sole proprietor doesn't satisfy the county requirement.
- Selecting the wrong entity type on Form 503. Your entity type must match your Secretary of State file number exactly. A mismatch causes the form to be returned.
- Omitting counties where you do business. Your assumed name is only effective in the counties listed on the certificate. If you expand to an unlisted county, you'll need a new certificate.
- Checking "Only the following counties" when you operate statewide. When in doubt, check "All" in Item 8.
- Using a P.O. box for the principal office address. Form 503 requires a physical street address. A P.O. box will get your filing rejected.
- Letting your certificate expire without renewing. An expired certificate means your legal right to use that name lapses, and fixing it requires a completely new filing.
- Treating a DBA as trademark protection. Filing an assumed name certificate gives public notice that you use a name. It does not block others from using the same name.
- Missing the signature or signing as the wrong person. Form 503 must be signed by an authorized person for the specific entity type: a member or manager for an LLC, or an officer for a corporation.
Texas DBA FAQs
How do I get my DBA in Texas?
File an assumed name certificate with the correct office for your business type. Sole proprietors and general partnerships file with the county clerk in each county where they do business. LLCs, corporations, and other registered entities file Form 503 with the Texas Secretary of State for a $25 fee.
How much does it cost to file a DBA in Texas?
State filings cost $25. County filing fees vary but typically run $14–$25 or more per county. Credit card payments through SOSDirect carry a 2.7% surcharge; pay by check or money order to avoid it.
Is it better to do an LLC or a DBA in Texas?
They serve different purposes. A DBA is a name registration only—no liability protection, roughly $25. An LLC is a separate legal entity that protects your personal assets from business debts, but costs approximately $300 to form and requires ongoing recordkeeping. If you need liability protection, form an LLC. If you only need a trade name, a DBA is sufficient—and you can file a DBA under an LLC if you want both.
Does a DBA need an EIN in Texas?
No separate EIN is required for the DBA itself. Sole proprietors without employees can use their Social Security number for taxes, though an EIN is generally recommended for banking and privacy. LLCs and corporations already have an EIN that carries over to any assumed name they operate under. For more detail, see whether your DBA needs an EIN.
Does Texas require notarization for an assumed name certificate?
Not for state-level filings. Form 503 requires an authorized signature but no notarization. County clerk requirements vary, so confirm with your specific county clerk before submitting a county-level filing.
Can a foreign entity file a DBA in Texas?
Yes. A foreign entity authorized to transact business in Texas files Form 503 with the Secretary of State, the same as a domestic registered entity. The entity must already be registered to do business in Texas before filing an assumed name certificate.
Is there a penalty for not filing a Texas assumed name certificate?
Yes. Operating without a proper filing can prevent you from opening a business bank account under your trade name and may block you from pursuing legal claims under that name until the certificate is filed. Intentional noncompliance is a Class A misdemeanor under Texas Business & Commerce Code § 71.202, punishable by a fine up to $4,000, up to one year in jail, or both.
What is the difference between a name reservation, name registration, and assumed name certificate in Texas?
A name reservation (Form 501) holds a name for 120 days while you prepare formation documents—it does not authorize you to conduct business. A name registration (Form 502) lets an out-of-state entity protect its name in Texas before it begins transacting business here, and is valid for one year. An assumed name certificate (Form 503 or the county equivalent) is what you file when you are actually operating under a trade name different from your legal name—the only one of the three that authorizes you to conduct business under a different name. For the full statutory framework governing all three, see Chapter 71 of the Texas Business & Commerce Code and the Texas Secretary of State name filings FAQs.
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