https://tinmatch.com/
IRS TIN Matching: Verify Names & TINs Before Filing | tinmatch.com
IRS TIN Matching service explained: verify recipient names and TINs before filing 1099s to avoid B-Notices and backup withholding penalties.
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https://tincheck.com/
Real-Time TIN Matching & Compliance Verification | API Solutions | TINCheck
May 6, 2026 - TINCheck provides everything you need for fast, secure TIN matching and identity verification including bulk TIN matching and web service API.
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https://www.irs.gov/tax-professionals/taxpayer-identification-number-tin-matching
Taxpayer Identification Number (TIN) Matching | Internal Revenue Service
Apply to use the IRS Taxpayer Identification Number (TIN) Matching service. You can validate TIN and name combinations prior to submitting information returns.
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