Why TINCheck?
Fast
Expedite new customer & vendor onboarding with accurate identity verification in seconds.
Flexible
Use real-time checks, bulk upload, or our API to fit seamlessly into your existing workflow.
Complete
Screen against the IRS database and 20+ global watchlists in one click.
Affordable
Plans start at just $19.95/month. With monthly plans and volume discounts for growing teams .
Interested? See our demo
Stay Ahead of Compliance Risks with Fast, Accurate
TIN Matching
TINCheck helps you onboard vendors, gig workers, and customers faster — and instantly verify existing data to stay compliant, reduce risk, and avoid tax penalties
Onboard vendors and gig workers instantly
Verify new customers and reduce fraud
Audit vendor and payee data in real time
Automate KYC/AML with government watchlists
Integrate real-time TIN matching via API
Avoid IRS B-Notices and penalties.
How Much is Your Business Risking in Penalties?
Did you know?
20% of TIN Checks – or 1 in every 5 – do not match IRS Records.
Data based on TINCheck customer inputs across millions of checks in 2024
That could mean thousands of dollars in avoidable penalties.
Verify Against 20+ Global Databases
Verify individuals and businesses in real time against our comprehensive verification list – including the IRS, Death Master File (DMF), OFAC, and 20+ global databases.
US taxpayer verification – IRS TIN and Name matching, EIN Name Lookup, IRS Exempt Organizations, Global Intermediary Identification Number (GIIN), Death Master File, USPS Address Validation
Office of Foreign Assets Control (OFAC) – Consolidated Sanctions, Specially Designated Nationals (SDN), Sectoral Sanctions Identifications, Foreign Sanction Evaders, Denied Persons, Palestinian Legislative Council (PLC), Iranian Sanctions Act, Foreign Financial Institutions
US and state watch lists – Casino Banned Patrons, Entity List, Unverified List, FBI Wanted, Excluded Individuals and Entities, Excluded Parties, Arms Export Control Act (AECA), Designated Foreign Terrorist, Politically Exposed People,
Global sanctions – Canadian Consolidated Regulations, EU Sanctions, Interpol Wanted, Anti-Terrorism Financing & Entities, Iran-Syria Nonproliferation Act, United Nations Consolidated, Ukraine-Russia Related Sanctions, US Commodity Administrative & Reparations Sanctions.
Enterprise-Grade Security You Can Trust
TINCheck is built with your data security in mind. We use TLS/SSL encryption and process all data in SSAE SOC 2 and ISO 27001 certified data centers. You can enable two-factor authentication (2FA) for added protection, and manage user access and validation settings directly from your dashboard.
For more information on how we protect your data, visit our Security Page
TINCheck Services
Real-Time TIN
Check name and TIN combinations against IRS records and 20+ global databases — instantly and with confidence.
TINCheck API
Embed real-time TIN validation into your onboarding or vendor management process — no extra clicks, just clean data from day one.
Bulk Match
Upload large datasets to catch mismatches before filing 1099s or cleaning your vendor list. Get full results within 24 hours.
Join thousands of businesses using TINCheck to easily verify customer and vendor data.
Sign up now and try your first real-time check for free. Then pick the plan that is right for your organization.