What Is an Assumed Business Name Certificate and How Do You Get One?
An assumed business name certificate is the official document that gives your business the legal right to operate under a name other than its registered name. Here's what it is and how to get one.
Bizee Editorial Staff
Editorial Team
Introduction
An assumed business name certificate is the official document that proves your business has the legal right to operate under a name other than its registered legal name. You'll need one before you can open a bank account, sign contracts, or do business under that name. It's also called a DBA — short for "doing business as" — or a fictitious business name.
What is an assumed business name certificate?
An assumed business name certificate is a legal document issued by a state or county authority that confirms your business has the right to use a name other than its official registered name. It's the paperwork behind a DBA — "doing business as" — and it's also called a fictitious business name statement in some states.
The assumed name and the legal name are two different things. Your LLC or corporation has a legal name on file with the state. An assumed name is what you choose to call the business publicly — on your website, your storefront, your invoices. The certificate is what connects those two names on paper.
Most people encounter this when they want to run a business under a brand name that doesn't match their LLC's registered name. A sole proprietor named Maria Chen who wants to operate as "Bright Bloom Florals" needs a DBA. So does an LLC called "Riverside Holdings LLC" that wants to market itself as "Riverside Café."
Why your business might need one
You need an assumed business name certificate any time you want to do business under a name that isn't your legal registered name. Without it, banks won't open an account in that name, and you can't legally sign contracts or accept payments under it.
Banking under your assumed name
Banks require a certificate of assumed business name before they'll open a business account or process checks made out to your assumed name. Without it, a check written to "Bright Bloom Florals" can't be deposited into an account held by "Maria Chen." The certificate is what makes that connection official.
Building a paper trail between your names
The certificate creates a documented link between your legal name and your assumed name. If a dispute ever comes up over who owns the name or who signed a contract, that paper trail matters. It's one of those things that feels unnecessary until you actually need it.
Credibility with customers and vendors
Operating under a registered assumed name signals that your business is legitimate. Customers and vendors can look up the registration and confirm the business behind the name. That transparency builds trust — especially for a newer business trying to establish itself.
How to get an assumed business name certificate
Getting an assumed business name certificate means filing with the right government office, paying a state or county fee, and in some states, publishing a notice in a local newspaper. The process isn't complicated, but where you file depends on your state — and that part trips people up more than anything else.
Check that the name is available
Before filing, search your state's business name database to confirm no one else is already using the name. Most Secretary of State websites have a free search tool. Some states also let you reserve a name before filing, which gives you time to prepare your paperwork.
Find the right filing office
In most states, assumed business name registrations are handled at the county level — typically through the county clerk's office. Some states route filings through the Secretary of State instead. The U.S. federal government doesn't regulate assumed business names; it's entirely a state and local matter.
Complete and file the certificate
The filing form typically asks for your assumed name, your legal business name, your business address, and the type of business entity. You'll pay a filing fee — the amount varies by state and county. Many offices accept filings online, by mail, or in person.
Check for a publication requirement
Some states require you to publish a notice of your assumed name in a local newspaper after filing. This is a public notice requirement, not a marketing step. If your state requires it, the county clerk's office will tell you which newspapers qualify and how long the notice needs to run.
Receive your certificate
Once your filing is approved, you'll receive your certificate of assumed business name. Keep a copy on file — you'll need it when opening a bank account, applying for business licenses, or signing contracts under your assumed name. Processing times vary by state and county.
FAQ
A certificate of assumed name is an official document issued by a state or county authority that confirms your business has the legal right to operate under a name other than its registered legal name. It's the same thing as a DBA certificate or a fictitious business name statement — the terminology varies by state.
No. An LLC is a legal business entity formed with the state. An assumed business name — or DBA — is a name your business uses publicly that's different from its legal registered name. An LLC can have a DBA, and so can a sole proprietor or corporation. They're separate filings that serve different purposes.
It depends on the state and county where you file. Some offices process filings in a few business days. Others can take several weeks, especially if a publication requirement is involved. Check with your county clerk's office or Secretary of State for current processing times in your jurisdiction.
It depends on where you file. State and county filing fees vary widely — some are under $20, others run over $100. If your state requires newspaper publication, that adds a separate cost. Check your county clerk's office or Secretary of State website for the exact fee in your area.
In most states, you file with the county clerk's office in the county where your business operates. Some states route filings through the Secretary of State instead. The U.S. federal government doesn't handle assumed business name registrations — it's a state and local matter. Check your state's Secretary of State website to confirm where to file.
It depends. If you want to do business under a name that's different from your LLC's registered name, yes — you need to file for an assumed name. Your LLC's legal name is what's on file with the state. If your brand name, storefront name, or website name doesn't match that exactly, you need a DBA to use it legally.
