KYB verification tools for business

2. Persona

Offers business registry verification, US tax ID checks, document verification, watchlist screening, and configurable verification workflows. Its entry-level business verification offering is more limited than its full KYB solution.help.withpersona.com+1

Best if you need structured verification results or want to understand which business fields failed to match.

Official website

3. Sumsub

Checks corporate registries, company documents, ownership and management structures, and AML risk indicators. Supports verification links, a dashboard, and API integration.docs.sumsub.com+1

Best if you need to verify both your company and its owners, especially for international operations.

Official website

4. OpenCorporates

Lets you search company records and review registration details, officers, filings, and source references across many jurisdictions. It is primarily a company-data lookup service rather than a complete identity-verification workflow.api.opencorporates.com+1

Best for an initial, self-service check of your company's public registration records.

Search business records

5. Alloy

Provides identity and risk decisioning workflows that can incorporate business verification data from providers such as Middesk and other data partners.use.alloy.co

Best for fintechs, financial institutions, and businesses building automated onboarding checks.

Official website

What information can these tools verify?

Not every provider checks every field, and a successful registry match does not necessarily establish that your business is operating or that a bank or payment processor will approve it.

My recommendation

• Just want to check your own business information? Start with OpenCorporates and your official state business registry. If you're registered in the US, you can also use Middesk for more comprehensive checks.
• Need a formal KYB report? Compare Middesk and Persona for US entities, or Sumsub for broader international verification.
• Trying to fix a failed verification? Compare the exact legal name, registration number, address, and tax ID on your submitted application against official records before paying for another check.

Let me narrow it down

What are you trying to verify?

1. What's your goal?

Verify my own business information

Find out why a bank or payment platform rejected my business

Verify other businesses or customers

2. Where is the business registered?

United States

United Kingdom

Another country / multiple countries

3. What do you need confirmed?

Everything: name, address, registration, and tax ID

EIN / tax ID

Business address

Registration status and legal existence

Owners and beneficial ownership

[Find the best tools for me]

The two I'd investigate first

Middesk is particularly aligned if your SMBs are primarily U.S.-based. Its Autocomplete and Smart Populate APIs can pre-fill application information, reducing what the applicant has to enter, while its API can handle business verification, ownership, sanctions/PEP screening, and associated-person KYC.Middesk Docs+2

middesk.com

Alloy is more compelling if you need a broader decisioning/orchestration layer. It explicitly supports SMB structures from sole proprietors through LLCs and can keep low-risk applicants in passive verification while adding document/biometric checks for higher-risk cases.Alloy

alloy.com

For global SMB acquisition, Trulioo is worth putting alongside them because it combines KYB, UBO verification and KYC, with coverage across hundreds of registries and more than 500 business-registration-number formats.Trulioo+1

trulioo.com

Rule of thumb: if the core problem is “make a U.S. SMB application feel almost pre-filled,” look at Middesk; if it's “build a risk-adaptive KYC/KYB decision engine that minimizes friction for good applicants,” look at Alloy.Middesk Docs+1

If you tell me whether you're onboarding merchants, SMB bank accounts, B2B SaaS customers, lenders, or marketplace sellers, I can narrow this to 2–3 and compare UX friction, KYB coverage, API effort, manual-review rates, and pricing model.