Form W-9

What is Form W-9 and when is it used?

Form W-9, Request for Taxpayer Identification Number and Certification, appears in more settings than contractor onboarding. Requesters use it to collect the name, taxpayer identification number (TIN), and certifications needed for federal information reporting or backup withholding. The payee completes the form and returns it to the requester, which retains it rather than filing the W-9 itself with the IRS.

For this purpose, a U.S. person can be a U.S. citizen or resident alien, as well as a domestic corporation, partnership, estate, or trust. Businesses often request a W-9 from an independent contractor after classifying the working relationship. The form also supports reportable transactions involving interest, dividends, broker transactions, real-estate proceeds, mortgage interest, tuition, canceled debt, payment cards, and other types of income. Its scope therefore extends beyond freelancers and vendors, and receiving one does not mean that a Form 1099-NEC will necessarily follow.

The form carries the payee's certification of U.S. status for the applicable federal tax rules. It remains the payee's certification rather than an independent IRS determination or a general compliance guarantee. A requester may be unable to rely on it when the requester knows, or has reason to know, that the information is unreliable or incorrect.

A W-9 also does not classify a worker. For U.S. federal tax purposes, worker classification turns on the facts of the relationship, including behavioral control, financial control, and the type of relationship between the parties.

What information and certification does a W-9 contain?

The current IRS Form W-9 asks for the payee's name, federal tax classification, address, and TIN. It also includes exemption-code fields when applicable and optional spaces for the requester's name and address and account numbers. The form contains certifications about the TIN, U.S.-person status, backup withholding, and any FATCA exemption code entered. Signature requirements vary by payment or account type, so the requester should follow the instructions for the transaction instead of applying one signing rule to every W-9.

How should entities and LLCs approach the form?

The entries depend on the entity's federal tax classification and, for a disregarded entity, its ownership. A partnership, corporation, S corporation, or LLC that is not disregarded generally enters the name shown on its tax return on line 1 and a trade name or DBA on line 2. A disregarded entity uses line 1 for the first owner that is not disregarded for federal tax purposes and line 2 for the disregarded entity's name.

An LLC that is disregarded for federal tax purposes checks the box for its owner's tax classification and generally provides the owner's SSN or EIN. An LLC classified as a partnership, or one that elected corporate treatment, checks the LLC box, enters P, C, or S as applicable, and provides the entity's EIN. These are form-completion instructions, not advice on how an LLC should be taxed. The correct entries follow the entity's actual classification and ownership.

Line 3b serves a narrower purpose. A partnership, partnership-classified LLC, trust, or estate checks it when it has foreign partners, owners, or beneficiaries and gives the W-9 to a partnership, trust, or estate in which it holds an ownership interest. The field does not apply to every LLC or entity.

If the owner of a disregarded entity is a foreign person, that owner generally provides the appropriate Form W-8 rather than Form W-9, even if the owner has a U.S. TIN. The appropriate W-8 form depends on the owner and the income context.

When should information be updated?

The instructions identify specific changes that require action; they do not establish an annual renewal cycle. A payee must furnish a new W-9 when the name or TIN for the account changes. A payee that loses exempt-payee status must also provide updated information when future reportable payments are expected. The form gives a corporation that becomes an S corporation as one example.

When the address entered differs from the requester's records, the payee should write “NEW” at the top of the form. The requester can then update its records. Other changes may call for an update when they affect the form's entries or certifications, but there is no universal periodic refresh rule.

How does a W-9 fit with 1099, W-4, and W-8 forms?

Each form serves a different federal tax purpose. A W-9 collects information and certifications from a U.S. person for a requester. A Form 1099 may be a later information return. Form W-4 concerns employee wage withholding, while the W-8 series addresses foreign-status and withholding situations. The correct form follows the person's status, the payment, and the applicable rules.

W-9 vs. Form 1099

A W-9 moves from the payee to the requester. It supplies the name, TIN, and certifications the requester may need for information reporting or backup withholding, and the requester keeps the form. Form 1099 is a family of information returns that a payer or another reporting person may later file with the IRS and furnish to the recipient when the relevant reporting rules apply.

Form 1099-NEC is one common connection because it reports nonemployee compensation. Completing a W-9 does not automatically produce a Form 1099, however, and many W-9s have nothing to do with nonemployee compensation. Whether a return is required depends on the payment type, the recipient, relevant exceptions, and the reporting threshold in effect for that payment.

W-9 vs. Form W-4 and the W-8 series

An employee completes Form W-4 so an employer can withhold the correct federal income tax from the employee's pay. At year-end, the employer uses Form W-2 to report the employee's wages and taxes withheld. The employer files the applicable W-2 information with the Social Security Administration and furnishes the required copies to the employee; the SSA shares the federal tax information with the IRS.

Form W-9 gives a requester a U.S. person's TIN and certifications for information reporting and applicable withholding rules. Choosing one form over another does not settle worker classification. The actual relationship remains controlling for U.S. federal tax purposes.

A foreign person generally does not use Form W-9. Depending on the person and payment, the requester may need the appropriate Form W-8 or, in some personal-service situations, Form 8233. Form W-8BEN is for a foreign individual who is the beneficial owner, while Form W-8BEN-E is for foreign entities. Other W-8 forms address other capacities or income situations. A U.S. TIN alone does not make Form W-9 the correct form for a foreign person.

What should a requester do with a completed W-9?

Start with a completeness and consistency review. Confirm that the form supplies the payee's name and TIN, along with the entries and certifications required for the relevant payment or account. Use the full name and address provided, update the requester's records when the address is marked “NEW,” and follow the applicable IRS notice process if a filed return later produces a name-and-TIN mismatch. This review checks the form's contents; it does not independently verify that they are correct.

Missing or incorrect TIN information can trigger backup withholding requirements for certain reportable payments. The rate is 24% when the specified conditions apply. Exempt payees and exempt payment types exist, so an absent W-9 does not place every payment under backup withholding. A payer that fails to collect required backup withholding may be liable for the uncollected amount.

A W-9 contains a TIN and other identifying data. Restrict access and handle the form in a way that protects this sensitive information. In the IRS independent-contractor workflow, the business keeps the contractor's W-9 in its files for four years. That guidance does not establish four years as the retention rule for every W-9 context.

Can a W-9 be collected electronically?

Yes. A requester may establish a system for electronic W-9 submission, including fax, when the system meets the IRS requirements. It must generally preserve the submitted information, record submission-related access, reasonably authenticate the submitter, provide the same information as the paper W-9, and be able to produce a hard copy for the IRS.

When the transaction requires a signature, the electronic system must provide a final electronic signature and the perjury statement. A system collecting a form that does not require a signature needs neither. An emailed PDF, e-signature product, or onboarding portal does not qualify automatically; the requester must assess the system against the IRS requirements.

Verify information when eligible

The IRS permits a substitute Form W-9 when its content is substantially similar to the official form and it meets the certification requirements. The substitute can be incorporated into another customary business form, such as an account signature card. A general questionnaire or contract does not qualify merely because it is labeled “W-9.” It still needs the payee's name and TIN, the required certifications, and the execution required for the transaction.

When applicable, the certifications must state under penalties of perjury that the TIN is correct, the payee is not subject to backup withholding for the specified underreporting reason, the payee is a U.S. person, and any entered FATCA exemption code is correct. If the substitute omits the FATCA exemption-code field, the requester must tell the payee that the related certification does not apply.

A substitute may sit within a broader business form, but its signature cannot make the payee accept provisions unrelated to the required tax certifications or suggest that backup withholding depends on accepting them. A separate signature line for the certifications satisfies the IRS clear-presentation rule. When one signature line covers both the certifications and other provisions, the certifications and the required consent statement must stand out immediately above it.

The requester generally provides the Form W-9 instructions when the payee asks for them. If the IRS has notified the payee that backup withholding applies, the requester must instead instruct the payee, orally or in writing, to strike the underreporting certification language.