W-9 Form 2026: Missing W-9 Backup Withholding Calculator

Paid a contractor without a signed W-9? Once 2026 payments reach 2,000, every payment without a TIN carries 24% backup withholding the payer may owe, plus 340 per form (IRC 6721 + 6722) on a 1099-NEC still missing the TIN on Feb 1, 2027.

Does this apply to you? You paid a US freelancer, subcontractor or other non-employee for services in 2026, the year's total to that person reached 2,000 (the new 1099-NEC threshold from OBBBA section 70433), and you paid before a signed Form W-9 with their TIN came back. Nonemployee pay gets no 60-day grace for an "Applied For" W-9. The 1099-NEC and Form 945 are due Feb 1, 2027 (Jan 31 is a Sunday).

Your numbers

Your result

1099-NEC required for 2026? (1 = yes)-
Room before the 2,000 mark (0 = already over)-
Payments subject to 24% backup withholding-
Backup withholding you should have held back-
Backup withholding you may owe (Form 945)-
Missing-TIN penalty, IRS copy + contractor copy-
Missing W-9 cost-
Missing W-9 cost as % of what you paid-

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