Trade Name / DBA: The Name Customers Know

January 29, 2026

Understand trade names (DBAs)—the operating names businesses use with customers, and how they differ from legal entity names.

A trade name (also called DBA, “doing business as,” fictitious name, or assumed name) is the name under which a business operates and is known to customers. This often differs from the legal entity name registered with the Secretary of State.

Trade Name vs. Legal Name

A single legal entity might operate under multiple trade names. Multiple legal entities might use similar trade names in different markets.

Why Businesses Use Trade Names

Branding

• Legal names must be unique in the state; trade names allow preferred branding
• “John Smith Enterprises LLC” can operate as “Smith’s Auto Repair”
• Professional service firms use partner names but may brand differently

Privacy

• Sole proprietors can operate under a business name rather than their personal name
• Owners may want public separation from the business

Flexibility

• Test new brands without creating new entities
• Operate multiple concepts under one legal structure

DBA Registration

Most jurisdictions require businesses to register trade names:

Where DBAs Are Filed

• County level: Most common for sole proprietors and partnerships
• State level: Some states require state DBA registration
• Both: Some jurisdictions require both

Registration Requirements

• Legal entity or individual name
• Trade name being registered
• Business address
• Nature of business (sometimes)
• Filing fee

Consequences of Not Filing

• May be unable to enforce contracts under trade name
• Banking difficulties (accounts require DBA certificate)
• Potential fines
• Legal complications

The Entity Resolution Challenge

Trade names create verification complexity:

The Problem

Application says: "Green Thumb Landscaping"
State records show: "GTL Services LLC"

Without entity resolution, these appear unrelated. The business is legitimate—it just applied under its trade name.

Resolution Approaches

1. DBA record matching: Link trade names to legal entities via DBA filings
2. Web data: Websites often list both names
3. Multi-source verification: Cross-reference trade and legal names
4. Fuzzy matching: Identify abbreviations and variations

Trade Names in KYB

Verification Steps

1. Collect the name provided by applicant
2. Determine if it’s a trade name or legal name
3. If trade name, find the associated legal entity
4. Verify the legal entity exists and is in good standing
5. Confirm the trade name is properly registered

Common Issues

• Unregistered DBAs: Business operates under trade name without filing
• Multiple matches: Trade name links to multiple possible entities
• Expired registrations: DBA was filed but not renewed
• Cross-state confusion: Same trade name used by different entities in different states

Risk Considerations

Trade name usage isn’t inherently risky, but consider:

• Is the DBA properly registered?
• Does the legal entity behind it exist?
• Is there a pattern of name changes?
• Does the trade name obscure problematic ownership?

Key Takeaways

• Trade names are operating names distinct from legal entity names
• Most businesses use trade names for branding and customer recognition
• DBAs must typically be registered at county or state level
• Entity resolution must connect trade names to legal entities
• Verification requires checking both the trade name registration and underlying legal entity