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Middesk

Middesk — Business identity and KYB verification API providing tax ID validation, beneficial ownership, and business data.

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Our Verdict

The default US KYB API for fintechs; expect to bolt on a KYC vendor and global registry source.

Pros

  • Tax ID validation, UBO and business data in one API
  • US-focused coverage with strong registry data
  • Clean developer experience, self-serve signup
  • Fast turnaround on EIN match and formation docs

Cons

  • US-centric, weak outside North America
  • Per-verification pricing adds up at scale
  • Less depth on sanctions and adverse media
  • Not a full IDV stack for individuals
Best for: US fintechs, lenders and B2B platforms verifying business customers with EIN and UBO checks Not for: Global KYB programs or teams needing consumer KYC and sanctions screening in one platform

When to Use Middesk

Good fit if you need

  • Business identity verification via EIN and Secretary of State
  • Beneficial ownership check for CARES Act and bank KYB
  • Business address and registration status validation API
  • Automated KYB for BaaS and embedded finance onboarding
  • Merchant verification for marketplace and payments platforms

Lock-in Assessment

Low 2/5
Lock-in Score
2/5
Data Portability: api_only

Middesk Pricing

Pricing Model
usage
Free Tier
No
Entry Price
Enterprise Available
No
Transparency Score

Beta — estimates may differ from actual pricing

1,000
1001K10K100K1M
10,000
1K10K100K1M10M

Estimated Monthly Cost

$25

Estimated Annual Cost

$300

Estimates are approximate and may not reflect current pricing. Always check the official pricing page.

Used in these stacks

Curated setups that include Middesk.

Community Discussion

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