No, you do not need a new W-9 each year. A properly completed Form W-9 has no expiration date and stays valid indefinitely, as long as the name, taxpayer identification number, and entity classification on it are still correct. The IRS has no annual renewal rule, and a W-9 collected years ago can support a 1099 filed today. What matters is whether the information is still accurate, not how old the form is.
Why Annual Collection Isn’t Required
The W-9’s job is to certify a payee’s TIN and federal tax classification so the payer can file accurate information returns like the 1099-NEC or 1099-MISC.1Internal Revenue Service. Instructions for the Requester of Form W-9 (03/2024) Nothing in the instructions sets a renewal cycle. A form signed in 2020 can support a 1099 filed for tax year 2026 without any refresh, provided the underlying facts haven’t changed.
Some businesses ask for a new W-9 every year or every couple of years as an internal control. That’s a policy choice, not an IRS mandate. If a client keeps sending you a blank W-9 each January, their accounting department is being cautious.
Changes That Do Require a New W-9
The instructions treat a W-9 as invalid on the date the payer knows, or has reason to know, that the information on it is no longer correct.1Internal Revenue Service. Instructions for the Requester of Form W-9 (03/2024) At that point, collect a fresh one. The triggers that matter:
- A change in TIN. A sole proprietor who incorporates and gets an EIN needs to put that EIN on a new W-9 rather than continuing to use their Social Security Number.
- A change in legal name, whether from marriage, divorce, or a court order. The name on the W-9 must match IRS records.
- A change in entity classification. An LLC that elects S corporation treatment, or a C corporation that converts to an S corporation, has to reflect the new classification on an updated form.2Internal Revenue Service. Form W-9, Request for Taxpayer Identification Number and Certification
- A change in exempt payee status. A tax-exempt organization that loses its exemption, or a corporation that shifts from an exempt type to a non-exempt one, must furnish a new W-9 showing the change.2Internal Revenue Service. Form W-9, Request for Taxpayer Identification Number and Certification
A simple address change does not invalidate a W-9. Update your records so the 1099 goes to the right place, but you don’t need to run the whole form again for a new mailing address.
When the IRS Tells You to Get a New One
Sometimes the request for a fresh W-9 comes from the IRS rather than from a change on the payee’s end. If a TIN on a 1099 you filed doesn’t match IRS records, you’ll receive a CP2100 or CP2100A notice listing the mismatched accounts.3Internal Revenue Service. Understanding Your CP2100 or CP2100A Notice
Compare the notice against your files. If the TIN listed matches what you have on the existing W-9, send the vendor a “B notice” asking them to provide their correct TIN on a new W-9. If they don’t respond, backup withholding must start no later than 30 business days after you received the CP2100 or CP2100A. Once the vendor delivers a corrected TIN on a new W-9, stop backup withholding within 30 calendar days.3Internal Revenue Service. Understanding Your CP2100 or CP2100A Notice
If you never got a TIN in the first place, or the one you have is obviously invalid (wrong number of digits, contains letters), you shouldn’t be waiting for a notice at all. The IRS expects backup withholding to begin immediately on payments to any vendor who hasn’t provided a valid TIN.4Internal Revenue Service. Backup Withholding “B” Program
What It Costs to Skip a Required Update
Ignoring a triggering event is expensive. When a vendor’s TIN is missing, wrong, or flagged by the IRS, the payer must withhold 24% of every reportable payment and remit it to the IRS instead of the vendor.5Internal Revenue Service. Backup Withholding The vendor eventually claims that withholding as a credit on their return, but the cash-flow hit while the issue drags on is real: nearly a quarter of each payment held back until a corrected W-9 arrives.
The payer’s own exposure runs on a separate track. Filing a 1099 with an incorrect TIN, filing late, or not filing at all carries per-return penalties that scale with how late the correction arrives, up to $340 per return for late-or-never filings and $680 per return where the IRS finds intentional disregard.6Internal Revenue Service. Information Return Penalties Payees who submit a false W-9 that suppresses backup withholding face a $500 civil penalty, with criminal exposure for willful falsification.2Internal Revenue Service. Form W-9, Request for Taxpayer Identification Number and Certification A payee who simply fails to furnish a TIN when required faces a $50 penalty per failure, capped at $100,000 in a calendar year.7eCFR. 26 CFR 301.6723-1 – Failure to Comply With Other Information Reporting Requirements
A Practical Approach
You don’t need a calendar reminder to re-collect W-9s. You need a process that flags the events that actually invalidate one. When onboarding a contractor, ask them to notify you if their legal name, TIN, or entity classification changes. Watch for signals in the paperwork you already handle: an invoice that suddenly comes from an LLC when it used to come from an individual, a new business name on a check request, an EIN appearing where a Social Security Number used to be. Any of those is a reason to request a new form before the next payment goes out.
If a CP2100 notice arrives, work it on the IRS’s clock. The 30-business-day window to start backup withholding on unresponsive vendors is short, and missing it can turn a paperwork problem into a penalty problem.
One Boundary Worth Knowing
All of this applies to U.S. persons: U.S. citizens, resident aliens, and domestic entities. Foreign contractors and vendors cannot submit a W-9 at all. They provide Form W-8BEN (individuals) or W-8BEN-E (entities) to certify foreign status, and the withholding regime is different, typically a 30% default rate rather than the 24% backup rate.8Internal Revenue Service. About Form W-8 BEN, Certificate of Foreign Status of Beneficial Owner for United States Tax Withholding and Reporting (Individuals) If you accepted a W-9 from a payee who turns out to be foreign, the fix isn’t a new W-9 each year, it’s the correct form.