woman sitting at desk working on computer

TIN & 40+ Verifications

Simple to Launch. Simple to Use. Economical to Use.

VendorInfo is easy to implement and use by companies of all sizes – from universities and government agencies to Fortune 100 companies. No matter your industry or size, you can configure these self-service modules to fit your company’s specific needs and budget.

New vendors that complete a Vendor Information Form, W-9 or W-8 at the VendorInfo portal are validated against all of these lists:

• IRS TIN/Name Matching
• IRS EIN/Name Lookup System
• Specially Designed National (Office of Foreign Assets Control – OFAC)
• Foreign Sanctions Evaders List (Office of Foreign Assets Control – OFAC)
• Death Master File (Social Security Administration)
• Denied Persons List (Department of Commerce)
• UK Sanctions List
• EU Sanctions List
• United Nations Consolidated List
• Excluded Parties List System (General Services Administration, now part of SAM)
• Excluded Individuals and Entities (Office of Inspector General, Health & Human Services)
• Designated Foreign Terrorist Organization (Department of State)
• Politically Exposed People (Central Intelligence Agancy)
• FBI Wanted Lists (Federal Bureau of Investigation)
• Address Validation (United States Postal Service)
• Global Intermediary Identification Number (Internal Revenue Service)
• Casino Banned Patron Lists (U.S. States and Municipalities)
• IRS Exempt Organizations (Department of Treasury, Internal Revenue Service)
• EU Sanctions List (European Union External Action Service)
• Arms Export Control Act (U.S Department of State, Directorate of Defense Trade Controls)
• Sectoral Sanctions Identifications (Department of Treasury, Office of Foreign Assets Control)
• Unverified List (Department of Commerce, Bureau of Industry and Security)
• Entity List (Department of Commerce, Bureau of Industry and Security)
• Palestinian Legislative Council (Department of Treasury, Office of Foreign Assets Control)
• Ukraine-Russia Related Sanctions (Department of Treasury, Office of Foreign Assets Control)
• Foreign Financial Institutions Subj. 561 (Department of Treasury, Office of Foreign Assets Control)
• Iranian Sanctions Act (Department of Treasury, Office of Foreign Assets Control)
• Iran-Syria Nonproliferation Act (U.S. Department of State)
• INTERPOL Wanted
• Anti-Terrorism Financing & Entities
• United Nations Consolidated
• Consolidated Sanctions List
• CJL Consolidated Regulations
• DJL Special Economic Measures Act
• CJL Freezing Assets of Corrupt Foreign Officials Act
• U.S. Commodity Administrative & Reparations Sanctions

Frequently asked questions

What does VendorInfo's TIN matching check?

When a vendor submits a W-9 or W-8 in the VendorInfo portal, VendorInfo matches the vendor's name and Taxpayer Identification Number against IRS records (IRS TIN/name matching and EIN/name lookup), validates the address with the USPS and runs additional verifications, including the Death Master File, sanctions lists and law-enforcement watch lists.

IRS TIN matching FAQs

How does automated TIN matching improve 1099 reporting accuracy?

Automated TIN matching checks each vendor's name and TIN at the point of onboarding, so mismatches are corrected by the vendor before a payment is made instead of being discovered when 1099s are filed. That means fewer mismatches on the IRS's CP2100 lists, fewer B-notices to send, less backup-withholding work and fewer penalty notices.

How do you validate TINs at scale for a large vendor population?

Validate at the source rather than in year-end batches. The IRS program lets payers check up to 25 name/TIN combinations at a time interactively, or up to 100,000 in a bulk file, with results within 24 hours. VendorInfo checks every new vendor automatically as they register, so the whole vendor master stays matched without manual batch work.

Can TIN matching prevent B-notices and 972CG penalty notices?

It greatly reduces them. When names and TINs on filed 1099s don't match IRS records, the IRS sends the payer a CP2100 or CP2100A listing the mismatches, the payer must then send B-notices to those payees, and the IRS may propose penalties on Letter 972CG. Matching every vendor's name and TIN before you pay them removes the main cause of all three.

What is a B-notice?

Responding to IRS Letter 972CG

What happens when a vendor's TIN does not match IRS records?

The mismatch is flagged before the vendor is approved, AP reviews the issue, and the vendor is asked to correct the name or TIN and resubmit a W-9 in the portal. Because the fix happens at onboarding, the incorrect record never reaches your vendor master or your 1099 filing.

Did the backup withholding threshold change in 2026?

Yes. For payments made after December 31, 2025, the One Big Beautiful Bill Act raised the Form 1099-NEC and 1099-MISC reporting threshold, and the matching backup withholding threshold, from $600 to $2,000, with inflation adjustments starting in 2027. The backup withholding rate is still 24%. A correct name/TIN match is still what keeps payees out of backup withholding.