W-9 Form
An IRS form a nonprofit collects from a vendor, contractor, or honorarium recipient before paying them, to obtain their tax ID and confirm 1099 reporting requirements.
Before a nonprofit pays an independent contractor, freelance grant writer, or guest speaker $600 or more in a calendar year, it should collect a completed Form W-9 — capturing the payee’s legal name, tax classification, and taxpayer identification number (SSN or EIN). Without it, the organization risks not having the information needed to file an accurate 1099-NEC in January.
Best practice is collecting the W-9 before the first payment is issued, not scrambling to track it down during year-end 1099 prep — a surprisingly common fire drill for finance teams that only request the form once a vendor crosses the reporting threshold. Payments to corporations are generally exempt from 1099 reporting, which the W-9’s tax classification section is designed to clarify upfront.
Organizations that don’t collect a W-9 and later can’t get one from a nonresponsive vendor may be required to begin backup withholding — withholding a flat percentage of future payments and remitting it to the IRS — an outcome easily avoided by making the W-9 a standard step of vendor onboarding.
See also: Honorarium, Unrelated Business Income (UBI)
