How do I check if a vendor's name and TIN match IRS records?

To verify whether a vendor’s name and TIN (Taxpayer Identification Number) match IRS records, use the IRS TIN Matching service.

If you have a business account

You can use e-Services TIN Matching through the IRS:

• Online TIN Matching: Lets approved users verify a name/TIN combination one at a time
• Bulk TIN Matching: Lets you upload a file with many vendor records at once

Basic steps

1. Create or log in to an IRS e-Services account.
2. Apply for access to TIN Matching.
3. Once approved, enter the vendor’s:
   • Legal name
   • TIN (usually SSN, EIN, or ITIN)
4. Review the IRS response:
   • Match: Name and TIN combination matches IRS records
   • No match / mismatch: Information doesn’t match and should be corrected before filing 1099s

If you’re not eligible for IRS TIN Matching

You generally can’t directly verify someone’s TIN with the IRS unless you’re an authorized payer/authorized user for information reporting. In that case, you should:

• Ask the vendor to complete Form W-9
• Compare the name/TIN on the W-9 to your records
• Use a CP-2100/CP-2100A notice if the IRS later flags a mismatch on filed information returns

Important notes

• Don’t confuse TIN Matching with a general IRS lookup service — the IRS does not let you publicly verify anyone’s taxpayer info.
• For privacy and compliance, only use the TIN Matching service for permitted business purposes, typically for filing information returns like Form 1099.

If you want, I can also give you the exact IRS e-Services path or explain how to read a W-9 for matching purposes.