KYB Onboarding Tech Stack 2026: Sumsub vs Veriff vs In-House

KYB (Know Your Business) is a compliance obligation for every B2B payment flow in digital goods. Unlike KYC, KYB verifies a company, not a person: incorporation, UBOs, sanctions, and ongoing monitoring. This article walks through the production KYB stack for 2026.

1. What a KYB engine must do

Minimum pipeline:

async function onboardBusiness(b: BusinessApplication): Promise<KybDecision> {
  await collectDocuments(b);          // Cert of incorp, articles, IDs
  await documentAi.extract(b.docs);   // OCR + structured fields
  await registryLookup(b);            // Companies House, US SoS, etc.
  await sanctionsScreen(b);           // OFAC, EU, UN, UK
  await pepCheck(b.ubos);             // Political exposure
  const score = riskScore(b);
  if (score > 70) return { decision: 'manual_review' };
  if (score > 40) return { decision: 'approved_enhanced_monitoring' };
  return { decision: 'approved' };
}

Each step is a separate compliance checkpoint with audit log.

2. Sumsub vs Veriff — production comparison

Sumsub is the pick for compliance-heavy distributors (FX, crypto). Veriff for retail/SaaS B2B where UX trumps coverage.

3. Document AI — OCR + LLM extraction

KYB documents (incorporation cert, articles, IDs) arrive as PDF/JPEG. 2026 stack:

# Sumsub-style pipeline
from sumsub import Client
sumsub = Client(api_key=os.environ['SUMSUB_KEY'])

applicant = sumsub.applicants.create(level='kyb-business')
sumsub.applicants.add_document(
    applicant_id=applicant.id,
    file=open('incorporation.pdf', 'rb'),
    type='COMPANY_DOC',
    sub_type='CERTIFICATE'
)
# Sumsub OCR + LLM extracts: company_name, reg_number, dir_names, address
result = sumsub.applicants.get(applicant.id)
print(result.extracted_data)

Accuracy on Western registries is 95–98%. On emerging markets (LatAm, Africa) — 80–88%, with human review required.

4. Beneficial-owner graph

UBO discovery is a recursive walk of the ownership chain. For company A → owns 60% of B → owns 80% of C, the effective owner of C = 0.6 * 0.8 = 48%. Store as a graph:

CREATE TABLE ownership_edges (
  parent_id UUID,    -- shareholder (person or company)
  child_id UUID,     -- owned entity
  percentage DECIMAL(5,2),
  effective_date DATE,
  source TEXT,       -- 'registry', 'self_declared'
  PRIMARY KEY (parent_id, child_id, effective_date)
);

-- Recursive UBO query
WITH RECURSIVE chain AS (
  SELECT parent_id, child_id, percentage AS effective
  FROM ownership_edges WHERE child_id = $target
  UNION ALL
  SELECT e.parent_id, c.child_id, c.effective * e.percentage / 100
  FROM chain c JOIN ownership_edges e ON e.child_id = c.parent_id
)
SELECT parent_id FROM chain WHERE effective > 25;

Run quarterly across all verified partners for re-validation.

CTA

FoxReload uses Sumsub under the hood and clears enterprise partners through KYB in <24h. Request access and start onboarding.