A client or payment platform asked you for a Form W-9, and your payment is on hold until you return it. Form W-9, the “Request for Taxpayer Identification Number and Certification,” is the Internal Revenue Service (IRS) form a U.S. payee completes so the payer can report payments correctly. Download the official IRS Form W-9 PDF and the Instructions for the Requester of Form W-9 (03/2024) straight from IRS.gov.
The form verifies your Taxpayer Identification Number (TIN) so the payer can file accurate information returns like the 1099-NEC. Return a complete, signed W-9 and you keep your payments flowing and avoid backup withholding.
What Is Form W-9?
Form W-9 is the IRS form a payee completes so the payer can report payments (such as 1099-NEC and 1099-MISC) with the correct name and TIN. The IRS “About Form W-9” page confirms this purpose. The requester keeps it on file and never sends it to the IRS. It collects your name, business name, tax classification, exemption codes, address, and TIN, plus a signed certification made under penalties of perjury.
The current revision is March 2024, printed as “Form W-9 (Rev. 3-2024),” per the IRS Form W-9 PDF. There is no separate 2025 or 2026 form. A search for “W-9 form 2026 download” resolves to the Rev. March 2024 PDF on IRS.gov, confirmed by the IRS “About Form W-9” page.
The table below shows how Form W-9 compares to the other forms readers confuse it with.
| Form | Who files it | What it does | Where it goes | Source |
|---|---|---|---|---|
| W-9 | U.S. persons and entities | Reports your TIN so payers can file 1099s | Kept by the requester, not the IRS | IRS Form W-9 (Rev. March 2024) |
| W-4 | W-2 employees | Sets payroll tax withholding | Kept by the employer | IRS About Form W-4 |
| W-8BEN | Foreign individuals | Certifies foreign status and claims treaty rates | Kept by the withholding agent | IRS About Form W-8BEN |
| 1099-NEC / 1099-MISC | Payers/businesses | Reports payments made to a payee | Filed with the IRS and sent to the payee | IRS About Form 1099-NEC |
Who Needs to Fill Out a W-9?
Any U.S. person or entity receiving reportable payments completes a Form W-9. That covers independent contractors and freelancers, service businesses and LLCs, landlords receiving rent through property managers or commercial tenants, bank and brokerage account holders, and investors earning dividends or interest. W-2 employees and foreign persons do not use it; they use Form W-4 and Form W-8BEN instead.
| Payee type | Why a W-9 is needed | Related information return | Source |
|---|---|---|---|
| Independent contractor or freelancer | Client paying $600+ for services needs your TIN | 1099-NEC | IRS Instructions for Forms 1099-MISC and 1099-NEC ($600 threshold) |
| Service business, LLC, or partnership | Reports service payments to the IRS | 1099-NEC or 1099-MISC | IRS Instructions for Forms 1099-MISC and 1099-NEC |
| Landlord (paid via manager or commercial tenant) | Reports rental income | 1099-MISC, Box 1 | IRS Instructions for Forms 1099-MISC and 1099-NEC |
| Bank or brokerage account holder | Reports interest income | 1099-INT | IRS Form W-9 (Rev. March 2024) |
| Investor earning dividends | Reports dividend income | 1099-DIV | IRS Form W-9 (Rev. March 2024) |
A limited liability company (LLC) is a common filer here, and its classification is the most-confused line on the form. W-2 employees complete Form W-4 for payroll withholding. Foreign persons complete Form W-8BEN, covered further below.
How Do You Fill Out Form W-9 Line by Line?
The March 2024 revision has Lines 1 through 7 plus Part I (TIN) and Part II (certification). Complete every applicable line, then sign and date. Line 1 must never be left blank, and the certification in Part II makes the form valid. The line-by-line breakdown below follows the current IRS Form W-9 (Rev. March 2024) layout.
| Line | What it asks | What to enter | Source |
|---|---|---|---|
| Line 1 | Name | Your name as shown on your income tax return; never leave blank | IRS Form W-9 (Rev. March 2024) |
| Line 2 | Business name / disregarded entity name | Your doing-business-as (DBA) or trade name, if different from Line 1 | IRS Form W-9 (Rev. March 2024) |
| Line 3a | Federal tax classification | Check one box; an LLC enters code C, S, or P | IRS Form W-9 (Rev. March 2024) |
| Line 3b | Foreign partner/owner checkbox (new) | Check if a partnership, trust/estate, or LLC taxed as a partnership has foreign partners, owners, or beneficiaries | IRS Instructions for the Requester of Form W-9 (03/2024) |
| Line 4 | Exemptions | Exempt payee code and FATCA code; most individuals leave blank | IRS Form W-9 (Rev. March 2024) |
| Lines 5–6 | Address | Street, city, state, and ZIP; write “NEW” at the top if it changed | IRS Form W-9 (Rev. March 2024) |
| Line 7 | Account numbers | Optional account references | IRS Form W-9 (Rev. March 2024) |
| Part I | TIN | Social Security Number (SSN) for individuals; Employer Identification Number (EIN) for entities | IRS Form W-9 (Rev. March 2024) |
| Part II | Certification | Sign and date under penalties of perjury | IRS Form W-9 (Rev. March 2024) |
Line 3b is new in the March 2024 revision, per the Instructions for the Requester of Form W-9 (03/2024). If your address changed, entering “NEW” at the top helps, though the payer may still use the old address until they update their records.
How Should an LLC Complete Form W-9?
On Line 3a a single-member LLC that is disregarded checks the box for its owner’s classification, usually Individual/sole proprietor, not the LLC box, unless another entity owns it. A multi-member LLC checks the LLC box and enters P for partnership. An LLC taxed as a corporation enters C or S. This follows the IRS Form W-9 (Rev. March 2024) instructions.
For the TIN in Part I, a disregarded single-member LLC typically uses the owner’s SSN or EIN. Getting Line 3a right matters because misclassification is the most common reason a payer’s 1099 filing gets rejected.
What Is Backup Withholding?
Backup withholding is a flat 24% federal withholding a payer must take from reportable payments when TIN rules break down, per IRS Topic No. 307. A correctly completed W-9 with a valid TIN is how you prevent it. The rate was set at 24% by the Tax Cuts and Jobs Act (TCJA, Public Law 115-97), down from 28% previously.
| Trigger | What it means | Source |
|---|---|---|
| No TIN provided | Payee does not furnish a TIN in the required manner | IRS Topic No. 307 |
| Incorrect TIN | IRS sends the payer a “B notice” that the TIN is wrong | IRS Instructions for the Requester of Form W-9 (03/2024) |
| Underreporting | IRS sends the payer a “C notice” for underreported interest or dividends | IRS Topic No. 307 |
| Failure to certify | Payee does not certify exemption on interest and dividend accounts | IRS Topic No. 307 |
Before a “C notice” (underreporting) starts withholding, the IRS must mail the payee four notices over at least a 120-day period, per IRS Topic No. 307. The payer deposits the withheld 24% and reports it on Form 945, and a payer who fails to collect it can become liable for the amount, per the IRS backup withholding page.
Who Is Exempt From Backup Withholding?
Most individuals and sole proprietors are not exempt and leave Line 4 blank. Exemption belongs to entities such as 501(a) tax-exempt organizations, government entities, corporations (for most payment types), and financial institutions, which enter an exempt payee code from 1 to 13. These codes come from the IRS Form W-9 (Rev. March 2024) instructions.
| Exempt payee code | Example payee | Source |
|---|---|---|
| 1 | Organization exempt from tax under section 501(a), or an IRA | IRS Form W-9 (Rev. March 2024) |
| 2 | The United States or its agencies | IRS Form W-9 (Rev. March 2024) |
| 3 | A state, D.C., or a U.S. possession | IRS Form W-9 (Rev. March 2024) |
| 5 | A corporation | IRS Form W-9 (Rev. March 2024) |
The Foreign Account Tax Compliance Act (FATCA) exemption codes run A through M and apply mainly to accounts held outside the United States. Domestic payees usually leave that field blank.
What Happens If You Do Not Provide a W-9?
Whether you overlook the request or actively refuse it, the result is the same. The payer must start 24% backup withholding, your payments may be delayed or your contract ended, and IRS penalties can apply for failures and false statements. The penalty figures below are drawn from the IRS Form W-9 (Rev. March 2024) instructions.
| Penalty | Amount | Source |
|---|---|---|
| Failure to furnish a correct TIN (IRC 6723) | $50 per failure, absent reasonable cause | IRS Form W-9 (Rev. March 2024) |
| False statement with no reasonable basis causing no backup withholding | $500 civil penalty | IRS Form W-9 (Rev. March 2024) |
| Willful falsification of certifications | Criminal penalties, including fines and/or imprisonment | IRS Form W-9 (Rev. March 2024) |
Refusing does not remove your tax obligation. It just triggers withholding and, potentially, penalties, so returning the form is the faster path to full payment.
How Do You Request a W-9 From a Contractor?
Collect the W-9 before the first payment, during vendor or contractor onboarding, and keep it on file. You never send it to the IRS. Keep W-9s for at least four years to align with backup withholding recordkeeping, per the Instructions for the Requester of Form W-9 (03/2024).
A substitute W-9 is allowed if it is substantially similar and keeps the certification language, which is common in onboarding platforms. Collect the form through an encrypted portal or e-signature tool, not plain email, because it contains a TIN and other sensitive data. Re-request the form when the payee’s information changes or when you receive a “B notice.”
What Is TIN Matching and Why Does It Matter?
TIN matching lets a payer verify a payee’s name and TIN combination against IRS records before filing 1099s. It catches mismatches early, before they trigger “B notices” and backup withholding. Run it after you collect the W-9 and before you file information returns. This is the IRS backup withholding control that prevents incorrect-TIN penalties.
Accurate collection upfront is the key control that minimizes name and TIN mismatch errors on 1099 filings. Commenda’s global tax ID verification tool checks tax IDs so you catch problems before they reach the IRS.
W-9 vs W-8BEN: Which Form Do You Need?
The W-9 is for U.S. persons: citizens, resident aliens, and U.S. entities. Foreign individuals complete Form W-8BEN instead, and foreign entities complete Form W-8BEN-E. Those forms certify foreign status, claim tax treaty rates, and handle the default 30% withholding on U.S.-source income. The decision rule is simple: U.S. person uses W-9, non-U.S. person uses the correct W-8.
Collecting Form W-8BEN from a foreign contractor avoids the default 30% U.S. withholding that would otherwise apply. Send the wrong form and you either over-withhold on a U.S. person or under-withhold on a foreign one, so confirm status before you collect.
What Are the Most Common W-9 Mistakes?
The recurring failures are collecting the form after payments start, a wrong or missing TIN, the wrong entity classification on Line 3a, a missing signature, stale information for long-term vendors, and sending the form to the IRS instead of the requester. Each one is avoidable with a quick check before you file.
- Collect the W-9 before the first payment, not at year-end.
- Confirm the TIN matches the legal name on Line 1.
- Check the correct Line 3a classification, especially for LLCs.
- Sign and date Part II, or the form is invalid.
- Refresh stale W-9s from long-term vendors.
- Return the form to the requester, never to the IRS.
How Commenda Helps With W-9 and 1099 Compliance
Collect a complete, signed W-9 before the first payment, verify the TIN, and you avoid 24% backup withholding and 1099 filing errors. That single control, done at onboarding, keeps payments moving and keeps your information returns clean at filing time.
Commenda’s tax and accounting platform keeps contractor and vendor tax documentation, filings, and deadlines handled in one place, with 100+ ERP, API, and custom integrations. Verify payee IDs with the global tax ID verification tool, track every due date on the compliance calendar, and see the penalty detail in our guide on how to file a 1099-NEC. Book a demo to see every contractor filing deadline tracked in one place before 1099 season.
