Sole Proprietor

Understand sole proprietorships—businesses where there's no legal separation between owner and business, and the unique KYB challenges they present.

5 min read

A sole proprietor is an individual who owns and operates a business without forming a separate legal entity. The person and the business are legally identical—there’s no corporation, LLC, or partnership structure creating separation.

Sole Proprietorships Are Everywhere

Scale

Approximately 23 million sole proprietorships in the US
Represent 73% of all US businesses
Account for only 4% of business revenue
Most common structure for micro-businesses

Common Types

Freelancers and consultants
Independent contractors
Small retail shops
Personal service providers (tutors, photographers, cleaners)
Gig economy workers
Side businesses

What Makes Sole Proprietors Different

No Legal Separation

Aspect	Sole Proprietor	LLC/Corporation
Liability	Personal assets at risk	Limited to business assets
Taxation	Personal tax return (Schedule C)	Separate entity taxation
State registration	Not required (just licenses)	Required filings
Existence	Tied to individual	Perpetual

Identity = Owner Identity

The business is the person:

Business debts are personal debts
Business lawsuits are personal lawsuits
Business income is personal income
Business credit is personal credit

Operating Names

Sole proprietors often operate under trade names:

“John Smith” does business as “Smith’s Consulting”
Requires DBA (Doing Business As) registration
Creates appearance of formal business
Trade name ≠ legal entity—owner remains personally liable

The KYB Challenge

No State Registry

Unlike corporations and LLCs, sole proprietorships don’t file with the Secretary of State. There’s no central record of:

When the business started
Who operates it
Whether it’s still active
What it does

Verification Complexity

Verifying a sole proprietor requires different approaches:

What doesn’t exist:

Corporate registration
EIN (may use SSN instead)
Annual reports
Registered agent

What might exist:

DBA registration (county or state)
Business licenses (local)
Tax records
Professional licenses
Web presence

Identity Verification Overlap

KYB for sole proprietors resembles KYC (Know Your Customer):

Verify the individual’s identity
Confirm they operate the claimed business
Check for licenses if required
Assess individual creditworthiness/risk

The business verification is the person verification.

Data Challenges

Finding Sole Proprietors

Sole proprietors are harder to discover and verify:

Data Source	Covers Sole Proprietors?
Secretary of State	No
Business registries	Sometimes (DBAs)
Tax data	Yes (but private)
Web presence	Inconsistently
Professional licenses	Some industries
Payment data	Yes (with limitations)

The Trade Name Problem

A sole proprietor filing says:

Business Name: "Green Thumb Gardening"
Owner: John Smith

But without Secretary of State records, connecting “Green Thumb Gardening” to a real person requires:

DBA records (where filed)
License records
Web and social presence
Transaction patterns

Distinguishing from LLCs

A business calling itself “ABC Services” could be:

A sole proprietor operating under a DBA
An LLC with a trade name
A corporation with a fictitious name

Without formation records, determining the structure requires investigation.

Risk Considerations

Higher Risk Factors

Sole proprietorships may present elevated risk:

No liability shield means financial fragility
Business can vanish instantly if owner stops
Limited creditworthiness assessment options
Higher failure rates than incorporated businesses

Lower Risk Factors

They also have some advantages:

Clear accountability (one person responsible)
No complex ownership structures to unravel
Typically small transaction volumes
Owner reputation directly at stake

Industry Patterns

Risk varies significantly by industry:

Professional services (low risk) vs. cash-intensive businesses (higher risk)
Licensed professions have additional verification points
Service businesses vs. inventory-based businesses

Sole Proprietors in Compliance

Regulatory Treatment

Some regulations treat sole proprietors differently:

Corporate Transparency Act: Sole proprietors not organized as entities are exempt
BSA/AML: Still applies to financial activities
Industry regulations: May require licensing regardless of structure

Verification Approach

For sole proprietor KYB:

Verify individual identity (KYC-style)
Confirm business operation (licenses, DBA, web presence)
Assess industry-specific requirements
Check for professional credentials if applicable
Evaluate based on individual and business signals combined

Key Takeaways

Sole proprietors have no legal entity separation—person and business are one
They represent the majority of US businesses but a small fraction of economic activity
No Secretary of State records exist—verification requires alternative data sources
KYB resembles KYC—verifying the business means verifying the individual
Trade names create complexity—connecting operating name to owner requires investigation
Risk assessment differs—consider both individual and business factors