The Best B2B Supplier Verification Tools in 2026 (Honest Review)
8 min read · Updated March 2026
Verifying a supplier manually takes 2–4 hours. The right tools can do most of that work in minutes. Here is an honest review of what's actually available in 2026 — free and paid — and how to combine them for comprehensive coverage.
The Problem: Manual Supplier Verification Doesn't Scale
If you're doing 5–30 deals a month, manually verifying each new counterparty is not a realistic long-term approach. The average thorough manual verification — company registry check, WHOIS lookup, OFAC screening, reference calls, LinkedIn check — takes 2–4 hours. At 10 new counterparties per month, that's 20–40 hours of verification work. That's not a business with 1–5 employees. It's a compliance department.
The stakes of skipping it, however, are well understood. A single fraudulent counterparty can cost more than 12 months of careful verification work to recoup — if you ever recoup it at all.
The answer is a combination of tools that automate the most time-consuming checks, flag the highest-risk signals automatically, and leave your manual attention for the edge cases that genuinely need it.
The Verification Stack: What You Actually Need to Check
A complete supplier verification covers five categories:
Identity & Registration
Is the company legally registered? Where? Are the directors who they claim to be?
Sanctions & Watchlists
Is the company or any director on OFAC, EU, or UN sanctions lists?
Domain & Digital Presence
How old is the domain? Does it match the company's claimed history? Is it consistent?
Transaction History
Have they actually done deals before? With whom? Did those deals go smoothly?
Counterparty Reviews
What do real trading partners say about working with them?
The Best Tools by Category
Company Registration & Identity
Companies House (UK)
UK counterparties
The definitive source for UK company registration data. Directors, registered address, accounts, and company status. Any UK supplier that can't be found here should raise immediate flags. Data is publicly accessible with no account required.
find.companieshouse.gov.uk
OpenCorporates
International counterparties
The largest open database of companies globally — covering 160+ jurisdictions. Aggregates data from national registries. Free for basic lookups; paid API access for bulk/programmatic use. Essential for international supplier checks.
opencorporates.com
Dun & Bradstreet (D-U-N-S)
Enterprise suppliers; enterprise buyers
The global standard for commercial identity — a D-U-N-S number ties a company to its legal identity and credit data. Useful for enterprise procurement but expensive for SMB use cases (pricing by enquiry, typically $1,000+/year for meaningful access). Many large enterprise buyers require their suppliers to have a D-U-N-S number.
Sanctions & Watchlist Screening
OFAC SDN Search (US Treasury)
All international deals (US businesses)
The authoritative source for US sanctions screening. Every international B2B deal from a US business requires this check. Search by company name, individual name, or country. Results are immediate. No account required. Non-negotiable for compliance.
sanctionssearch.ofac.treas.gov
EU Sanctions Map
EU counterparties; EU-based businesses
European external action service consolidated list of EU financial sanctions. Required for EU-based businesses and relevant for deals with EU counterparties. Available via the EU Sanctions Map portal.
TruthLedger (automated)
TruthLedger-registered counterparties
TruthLedger runs OFAC and sanctions screening automatically as part of the KYB process for every registered profile. You don't need to manually run the check — the result is visible on every verified counterparty profile.
Domain & Digital Presence
WHOIS Lookup (DomainTools / ICANN)
All counterparties
Reveals when a domain was registered, by whom (when not privacy-protected), and where it's hosted. A supplier with a 3-month-old domain claiming 10 years in business is a red flag. DomainTools provides the most comprehensive historical WHOIS data; ICANN lookup is free and covers basics.
Wayback Machine (Internet Archive)
All counterparties — especially for historical verification
Shows historical snapshots of any website going back years. Useful for verifying whether a supplier's website has actually been operating as long as they claim. A supplier who claims 2018 founding but whose website has no archived versions before 2025 is suspicious.
web.archive.org
Transaction History & Trust Scores
TruthLedger
B2B counterparties with TruthLedger profiles
The only B2B trust platform that combines verified transaction history (attested from Stripe, PayPal, Amazon, Shopify), KYB identity verification, OFAC screening, and a cryptographic trust score in a single profile. If your counterparty has a TruthLedger profile, you can see all of this instantly. Free to create and share a profile during open beta.
truthledger.app
Creditsafe
Large deal counterparties; credit risk assessment
Business credit reports including payment behaviour, county court judgements (UK), and financial health indicators. Useful for assessing financial risk on large deals. Pricing starts around £100/month for small business plans. More relevant for credit decisions than fraud prevention.
Experian Business Credit
US counterparties; large deal values
Similar to Creditsafe — business credit reports and financial health data. Better US domestic coverage than UK. Relevant for understanding financial stability rather than identity fraud. Useful complement to KYB verification for high-value deals.
The Recommended Stack by Deal Size
| Deal size | Minimum verification stack | Est. time |
|---|---|---|
| Under $500 | TruthLedger profile check (if available) + WHOIS | 5 min |
| $500–$5K | Companies House / OpenCorporates + OFAC + WHOIS + TruthLedger | 15 min |
| $5K–$25K | Full stack above + video call + reference check + KYB via escrow | 1–2 hours |
| Over $25K | Full stack + Creditsafe/Experian credit report + pre-shipment inspection + legal contract | 1 day + ongoing |
Verify suppliers in minutes, not hours
TruthLedger consolidates company registry verification, OFAC screening, WHOIS data, and verified deal history into a single counterparty profile — automating the work of the first 15 minutes of every supplier check.
Get Free AccessFrequently Asked Questions
What is the best free tool to verify a B2B supplier?
For a free verification stack: Companies House (UK suppliers), OpenCorporates (international), OFAC SDN search (sanctions), ICANN WHOIS (domain age), and TruthLedger (verified deal history and KYB status). Combined, these cover all five categories of supplier verification in around 15 minutes per supplier.
How do I verify a Chinese supplier?
China's National Enterprise Credit Information Publicity System (gsxt.samr.gov.cn) is the official registry for Chinese company registration data. OpenCorporates also indexes Chinese company data. For large deals with Chinese suppliers, consider using an independent sourcing agent or pre-shipment inspection service (SGS, Bureau Veritas, Intertek) in addition to document verification.
Is there a tool that combines company verification and sanctions screening?
Yes. TruthLedger runs company registry verification, OFAC screening, domain WHOIS checks, and KYB identity verification as part of its single supplier verification workflow. Paid enterprise KYB platforms like ComplyAdvantage and Refinitiv also offer combined screening, typically at $500+/month.
How reliable is OpenCorporates for supplier verification?
OpenCorporates aggregates data from national company registries — so the data quality depends on the source registry. For jurisdictions with strong public registries (UK, US, EU, Australia, Singapore), OpenCorporates is highly reliable. For countries with limited public registry data (some African, Southeast Asian, and Middle Eastern jurisdictions), it may be incomplete. Always cross-reference with the national registry directly for critical deals.