Insurance Documents
Also known as: W-9, Request for Taxpayer Identification Number
The IRS form that collects a subcontractor's legal name and taxpayer ID so a GC can issue a 1099 at year-end.
A W-9 captures a subcontractor's legal entity name, tax classification, and Taxpayer Identification Number. General contractors collect it so they can correctly report payments on a Form 1099 and avoid IRS backup withholding.
Because the W-9 and the COI are both gating documents a GC needs before paying a sub, it is efficient to collect them together during onboarding rather than chasing each one separately.
Track this on every subcontractor
CoiLoop collects COIs and W-9s through no-login links, uses AI to read each certificate and check limits, endorsements, and dates against your requirements, and warns you before anything expires.