No, you do not need a new W-9 each year. A completed Form W-9 has no expiration date and stays on file until something on it is no longer accurate. The IRS has never required annual renewal, and the same form can support information returns filed years later as long as the payee’s name, taxpayer identification number, and entity classification haven’t changed.1Internal Revenue Service. Instructions for the Requester of Form W-9 (03/2024)
How Long a W-9 Stays Valid
A W-9’s job is to certify a payee’s TIN and federal tax classification so the payer can file correct 1099s. Nothing in the form or the instructions sets a shelf life. A W-9 collected in 2020 can support a 1099-NEC filed in 2026 if the underlying facts still match.
Some accounting departments ask for fresh W-9s every January or every two to three years as an internal control. That’s a business choice, not an IRS rule. If you’re a contractor getting the same annual request from a client, the client is being cautious.
Changes That Do Require a New W-9
The IRS says a W-9 becomes invalid the moment 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 a new form is needed. The common triggers:
- A change in TIN. A sole proprietor who incorporates and gets an EIN must put the new number on a new W-9.
- A change in legal name through marriage, divorce, or a court order, so the W-9 matches IRS records.
- A change in entity classification. An LLC that elects S corporation status, or a C corporation that converts to an S corporation, needs to reflect the new classification on a fresh 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 moves from a type exempt from backup withholding to one that isn’t, must furnish an updated W-9.2Internal Revenue Service. Form W-9, Request for Taxpayer Identification Number and Certification
A simple change of mailing address does not invalidate a W-9. Update your records so the 1099 goes to the right place, but you don’t need to collect a whole new form.
When the IRS Tells You the W-9 Is Wrong
Sometimes the request for a new W-9 comes from the IRS rather than from any change on the vendor’s side. If a TIN you reported doesn’t match IRS records, you’ll get a CP2100 or CP2100A notice listing the mismatched accounts.3Internal Revenue Service. Understanding Your CP2100 or CP2100A Notice
Compare the notice to your records. If the TIN on the notice matches what the vendor originally gave you, you must send the vendor a “B notice” asking them to provide the correct TIN on a new W-9. If the vendor doesn’t respond, you must begin backup withholding no later than 30 business days after you received the CP2100 or CP2100A. Once a corrected TIN comes in, stop backup withholding within 30 calendar days.3Internal Revenue Service. Understanding Your CP2100 or CP2100A Notice
If the vendor never gave you a TIN, or gave you one that’s obviously wrong on its face, you should already be withholding. The IRS expects immediate backup withholding on payments to any vendor without a valid TIN.4Internal Revenue Service. Backup Withholding “B” Program
What It Costs to Let a Stale W-9 Sit
Backup withholding is the reason W-9 accuracy matters financially. When a vendor fails to provide a TIN, provides an incorrect one, or the IRS flags a mismatch, you must withhold 24% of every reportable payment and send it to the IRS instead of the vendor.5Internal Revenue Service. Backup Withholding That flat rate comes from the tax code.6Office of the Law Revision Counsel. 26 U.S. Code 3406 – Backup Withholding The vendor can later claim it as a credit on their return, but losing nearly a quarter of each check in the meantime is a serious cash-flow problem.
Then there are the information-return penalties. Filing a 1099 with the wrong TIN, filing it late, or not filing at all draws penalties per return. For returns due in 2026:
- Up to 30 days late: $60 per return
- 31 days late through August 1: $130 per return
- After August 1 or not filed: $340 per return
- Intentional disregard: $680 per return
These apply separately to each information return and each payee statement.7Internal Revenue Service. Information Return Penalties
Payees have their own exposure. A vendor who makes a false statement on a W-9 that results in no backup withholding when it should have applied faces a $500 civil penalty, and willfully falsifying the form can bring criminal penalties.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 per calendar year.8eCFR. 26 CFR 301.6723-1 – Failure to Comply With Other Information Reporting Requirements
One Boundary: W-9s Are Only for U.S. Persons
The no-annual-renewal rule applies to U.S. persons, meaning U.S. citizens, resident aliens, and domestic entities. A foreign contractor or vendor cannot submit a W-9 at all and should instead provide Form W-8BEN or W-8BEN-E to certify foreign status.9Internal Revenue Service. About Form W-8 BEN, Certificate of Foreign Status of Beneficial Owner for United States Tax Withholding and Reporting (Individuals) Withholding on foreign payees typically runs at a 30% default rate rather than the 24% backup rate, and the renewal and expiration rules for W-8 forms are not the same as for a W-9.
For everyone else, the practical rule is simple. Keep the W-9 you have. Ask for a new one when the vendor’s TIN, legal name, entity type, or exempt status actually changes, or when the IRS tells you to. Otherwise, the form on file is doing its job.