TIN Comply today launched TINCompliance.com, a free educational site for the finance, accounts-payable and tax teams responsible for collecting taxpayer identification numbers and filing Forms 1099. The site arrives ahead of the 2026 filing season, the first in which the reporting threshold for Forms 1099-NEC and 1099-MISC rises from $600 to $2,000 under the 2025 tax law, and the first full season of Form 1099-DA reporting for digital-asset brokers.
A payables manager holding a CP2100 has fifteen business days. The rules are public but scattered. We put the deadline, the letter and the procedure in one place, free.”
“Every January, thousands of companies discover that a vendor’s name and TIN don’t match IRS records, and the notices that follow, CP2100, B-Notices and 972CG, each start a clock measured in business days,” said a TIN Comply spokesperson. “The rules are public but scattered across IRS publications, regulations and form instructions. We built TINcompliance.com so a payables manager holding a notice can find the deadline, the letter and the procedure in one place, without buying anything.”
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Eleven plain-English guides covering the full compliance loop: IRS TIN matching, W-9 solicitation rules under Reg. 301.6724-1, the CP2100 and B-Notice procedure, backup withholding at 24%, Notice 972CG penalties and reasonable-cause waivers, sanctions screening, foreign payees and Forms W-8 and 1042-S, and a day-by-day worked example of a CP2100 response.
Seven browser-based calculators, including a B-Notice deadline calculator that counts business days and federal holidays per IRS Publication 1281, a Notice 972CG penalty estimator using the 2025 and 2026 amounts, a TIN format checker, solicitation and backup-withholding calculators, and a vendor-file health check.
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