No, you do not need a new W-9 every year. The IRS sets no expiration date and no annual renewal requirement for Form W-9, so a form you signed years ago is still valid as long as the name, taxpayer identification number, and tax classification on it are still accurate.1Internal Revenue Service. About Form W-9, Request for Taxpayer Identification Number and Certification A new form is only required when something on the old one has changed, or when a payer specifically asks for one.
That second part is why so many contractors assume there’s an annual rule. There isn’t. But clients often act like there is, and the consequences of ignoring their requests are real: 24% backup withholding on every payment until you comply.
What Form W-9 Actually Does
Form W-9, “Request for Taxpayer Identification Number and Certification,” gives whoever pays you the information needed to report those payments to the IRS, typically on a 1099-NEC when nonemployee compensation reaches $600 or more in a calendar year.2Internal Revenue Service. Instructions for Forms 1099-MISC and 1099-NEC (04/2025) It certifies your name, your TIN, and your tax classification. It does not authorize any withholding by itself, and it is not an employee form. Employees fill out a W-4 instead.3Internal Revenue Service. About Form W-4, Employee’s Withholding Certificate
Because the certification is a snapshot of your tax identity at the moment you sign it, the form stays good until that snapshot stops matching reality.
When You Do Need to Submit a New W-9
The IRS instructions on the form itself list the situations that invalidate an existing W-9. If any of these apply, send your payer an updated form:
- Your legal name changed, through marriage, divorce, a court order, or a corporate rebrand or merger.
- Your taxpayer identification number changed, including switching from an SSN to an EIN or receiving a new EIN.
- Your entity classification changed, such as moving from sole proprietor to LLC, or from a single-member LLC to an S corporation.4Internal Revenue Service. Business Name Change
- You previously claimed exemption from backup withholding and that exemption no longer applies.5Internal Revenue Service. Form W-9 (Rev. March 2024)
In each case, the payer needs the corrected information before they can file an accurate 1099. Send the new form promptly; don’t wait for year-end.
Changes That Don’t Require a New W-9
A mailing address change, on its own, does not require a new W-9 under IRS rules. The certification you signed is still valid. You should still tell your payers about the new address so your 1099s reach you, and if you’re a business, you can update your address directly with the IRS using Form 8822-B.
If your name, TIN, classification, and exempt status are all unchanged from a year ago, five years ago, or ten years ago, the W-9 on file is still the form the IRS expects your payer to rely on.
Why Clients Keep Asking Anyway
Many businesses have an internal policy of collecting fresh W-9s from vendors every one, two, or three years. This is a data-hygiene practice their accounting departments adopt, not an IRS mandate. The reason is practical: if a vendor’s information changed and the payer didn’t catch it, the payer is the one who gets penalized for filing a 1099 with the wrong name or TIN. Periodic re-collection reduces that risk.
From your side, there is no downside to complying. Refusing a routine W-9 request from a client can delay payment and, in the worst case, push the client to start backup withholding on your invoices. Fill it out, send it back, move on.
The B-Notice Trigger
There is one request you have to take seriously. When a name-and-TIN combination on a filed 1099 doesn’t match IRS records, the IRS sends the payer a CP2100 or CP2100A notice. The payer then sends you what’s called a “B notice” along with a blank W-9.6Internal Revenue Service. Backup Withholding “B” Program This is the IRS telling the payer, through the payer, that something is wrong with your information.
After a first B notice, submit a corrected W-9 and the problem is usually resolved. If a mismatch happens again within three years, you’ll receive a second B notice, and a new W-9 alone is no longer enough. You’ll need to provide a copy of your Social Security card or an IRS Letter 147C verifying your EIN before the payer can stop withholding.6Internal Revenue Service. Backup Withholding “B” Program
What Happens If You Don’t Provide a Valid W-9
If you fail to provide a W-9, give one with an incorrect TIN, or ignore a B notice, the payer is required by law to begin backup withholding at 24% of every payment.7Internal Revenue Service. Topic No. 307, Backup Withholding That money comes off the top before you see it, and the payer sends it directly to the IRS.
Backup withholding reaches most of the payment types a contractor or investor is likely to receive, including amounts reported on Forms 1099-NEC, 1099-MISC, 1099-INT, 1099-DIV, 1099-B, and 1099-K.7Internal Revenue Service. Topic No. 307, Backup Withholding So the hit isn’t limited to one client or one revenue stream.
To stop it, give the payer a correctly completed W-9 with a name-and-TIN combination that matches IRS records. The payer must stop withholding within 30 calendar days of receiving it.8Internal Revenue Service. 5.19.3 Backup Withholding Program The money already withheld isn’t gone; it gets credited toward your tax liability when you file your return. But until you fix the problem, you’re handing the IRS 24% of your gross receipts and waiting until tax time to get it back.
Separate IRS penalties also apply. Failing to furnish your TIN when required is $50 per failure, up to $100,000 per calendar year.9GovInfo. 26 U.S.C. 6723 – Failure to Comply With Other Information Reporting Requirements Making a false statement that reduces backup withholding is $500 per statement.10Office of the Law Revision Counsel. 26 U.S.C. 6682 – False Information With Respect to Withholding And because you sign the W-9 under penalty of perjury, willfully putting false information on it is a felony exposing you to up to a $100,000 fine and three years in prison.11Office of the Law Revision Counsel. 26 U.S.C. 7206 – Fraud and False Statements Criminal cases over a W-9 are rare, but the exposure is real for anyone considering a fake TIN or nominee name.
If You’re Waiting on a TIN
New business owners sometimes get asked for a W-9 before their EIN application has cleared. You can write “Applied For” in the TIN field, sign the form, and submit it. For interest and dividend payments, you then have 60 days to supply the real number before backup withholding begins. For every other payment type, including independent contractor compensation, the 24% withholding starts immediately and continues until you provide the TIN.5Internal Revenue Service. Form W-9 (Rev. March 2024) If you’re in that situation, treat the EIN application as urgent rather than administrative.
The Short Version
A W-9 is valid until the information on it stops being true. No calendar, no anniversary, no renewal. Submit a new one when your name, TIN, classification, or exempt status changes, and respond quickly if a payer sends you a B notice or a routine refresh request. Do that, and the 24% backup withholding never enters the picture.