Question 1

What is the difference between a W-9 and a W-4?

Accepted Answer

Form W-9 and Form W-4 serve fundamentally different purposes despite both involving taxpayer identification. The W-4 is an employee withholding certificate submitted to an employer to determine how much federal income tax to withhold from each paycheck — it governs the employer-employee withholding relationship. The W-9, by contrast, is a request for taxpayer identification number and certification used by any person or entity that needs to file an information return with the IRS about payments made to you. Independent contractors provide W-9s to clients, account holders provide them to banks, and investors provide them to brokerages. The W-9 does not itself trigger any withholding (unless backup withholding applies), while the W-4 directly controls the amount of tax withheld from wages. An employee at a traditional job submits a W-4; a freelancer doing the same work as an independent contractor provides a W-9 instead.

Question 2

Can I refuse to provide a W-9 when requested?

Accepted Answer

You are not legally compelled to complete a W-9 in all circumstances, but refusing carries significant practical and financial consequences. Under Internal Revenue Code Section 3406, if a payee fails to furnish a correct taxpayer identification number to a requester who is obligated to file information returns, the requester must impose backup withholding at 24% on all reportable payments. This means a client paying you $10,000 for freelance work would be required to withhold $2,400 and remit it to the IRS, reducing your payment to $7,600. Additionally, the IRS can impose a $50 penalty per failure to furnish a TIN under Section 6723, and if the failure is due to intentional disregard, the penalty increases to the greater of $250 or 10% of the amounts required to be reported. Financial institutions may close your account or refuse to open one if you decline to provide certification. In practice, refusing a legitimate W-9 request typically costs you more than complying.

Question 3

Should I use my SSN or EIN on the W-9?

Accepted Answer

The correct TIN to use depends on your business structure and how you are receiving the payments. Sole proprietors and single-member LLCs that have not elected corporate tax treatment may use either their Social Security number (SSN) or their employer identification number (EIN), but the IRS prefers the SSN for sole proprietors and the owner's SSN for disregarded-entity single-member LLCs. Many sole proprietors and single-member LLC owners choose to obtain and use an EIN specifically for W-9 purposes to avoid distributing their SSN to multiple clients and payers, which reduces identity theft risk. Multi-member LLCs, corporations (including S corps), partnerships, and trusts must use their entity's EIN. If you have both an SSN and an EIN, using the wrong one can trigger IRS B-notices (backup withholding notices) when the name/TIN combination on the information return does not match IRS records. The IRS matching program compares the first name and SSN, or the entity name and EIN — inconsistencies generate automatic notices.

Question 4

How does LLC tax classification work on the W-9?

Accepted Answer

The W-9 requires LLCs to enter a specific tax classification code on Line 3, and the correct code depends on how the LLC is treated for federal tax purposes — not on how it was organized under state law. A single-member LLC that has not filed an entity classification election (Form 8832) is a disregarded entity, and the owner reports all income on their personal return (Schedule C for an individual, or Schedule E if the owner is another entity). A multi-member LLC defaults to partnership taxation. However, any LLC can elect to be treated as a C corporation or S corporation by filing Form 8832 (for C corp) or Form 2553 (for S corp). On the W-9, the LLC checks the 'LLC' box on Line 3 and enters the applicable tax classification letter: C for C corporation, S for S corporation, or P for partnership. A single-member disregarded entity enters D. The tax classification determines whether payments to the LLC are subject to information return reporting — corporations generally are exempt from 1099 reporting, while partnerships and disregarded entities are not.

Question 5

What penalties apply for providing false information on a W-9?

Accepted Answer

Providing false information on Form W-9 triggers several distinct penalty provisions under the Internal Revenue Code. Under Section 6723, a $50 civil penalty applies per failure to furnish a correct TIN, and if the failure is due to intentional disregard of the requirement, the penalty increases to the greater of $250 or 10% of the aggregate amount required to be reported. Under the certification section of the W-9, the signer certifies under penalty of perjury that the TIN is correct, that they are not subject to backup withholding (unless applicable), and that they are a U.S. person (if applicable). A false certification that the payee is not subject to backup withholding when the IRS has already notified them that they are carries a $500 civil penalty under Section 6682. If the false information rises to the level of fraud — such as providing a fabricated TIN to evade taxes — criminal penalties under Section 7206 can include fines up to $250,000 and imprisonment up to three years for each offense. Identity theft involving a false SSN on a W-9 constitutes a separate federal crime under 18 U.S.C. Section 1028.

Question 6

How long should a requester retain W-9 forms?

Accepted Answer

The IRS does not prescribe a specific retention period for W-9 forms, but general tax record retention rules apply. Since the W-9 supports the preparation of information returns (Forms 1099, 1098, etc.), the requester should retain the W-9 for as long as the information return it supports remains relevant — generally at least four years after the due date of the last return filed using the TIN information from that W-9. If the requester continues making reportable payments to the same payee over multiple years using the same W-9 information, the retention clock resets with each year's information return. Many businesses retain W-9s permanently as a practical matter because the storage cost is minimal and the penalty for failing to produce a valid W-9 during an IRS audit of information return reporting can result in backup withholding assessments and penalties. The requester does not file the W-9 with the IRS — it is retained by the requester and produced only upon IRS examination request.

Question 7

Do I need a new W-9 for every payment or every year?

Accepted Answer

A W-9 does not expire and does not need to be renewed annually or with each payment. The requester should obtain a new W-9 only when the payee's information changes — new name, new TIN, change in tax classification, or change in exempt payee code or FATCA exemption code. However, many businesses implement policies to request updated W-9s annually or every two to three years as a best practice to ensure their records are current, particularly given that sole proprietors may change their business name, LLCs may change their tax classification election, and individuals may have name changes. If the IRS sends the requester a B-notice indicating a name/TIN mismatch, the requester must solicit a new W-9 from the payee within 15 business days. If the payee fails to respond, the requester must begin backup withholding. A requester who receives two B-notices for the same account within three calendar years must require the payee to provide TIN verification directly from the IRS or Social Security Administration.

Line	Field	Instructions
Line 1	Name	Enter your name exactly as shown on your income tax return. For individuals and sole proprietors, this is your personal name. For entities, this is the entity name on the EIN application.
Line 2	Business Name	Enter your business name, trade name, or DBA if different from Line 1. Single-member LLCs enter the LLC name here if the owner's name is on Line 1.
Line 3	Tax Classification	Check your federal tax classification: individual/sole proprietor, C corp, S corp, partnership, trust/estate, or LLC (with tax classification letter C, S, or P).
Line 4	Exemptions	Enter exempt payee code (if applicable) and FATCA exemption code (if applicable). Most individuals leave this blank — exemptions apply primarily to entities.
Lines 5-6	Address	Enter your street address, city, state, and ZIP code. This should match the address on your tax return for the TIN entered in Part I.
Part I	TIN	Enter your SSN (individuals/sole proprietors) or EIN (entities). Single-member LLCs may use owner's SSN or entity EIN — the name/TIN combination must match IRS records.
Part II	Certification	Sign and date, certifying under penalty of perjury that TIN is correct, you are not subject to backup withholding (unless notified), you are a U.S. person, and FATCA codes are correct.

Free Form W-9 Tax Form

What Is Form W-9?

TIN Certification

Backup Withholding

Entity Classification

Form W-9 Preview

Form W-9

Who Needs to Provide a W-9

Independent Contractors and Freelancers

Banks, Brokerages, and Financial Institutions

Real Estate Transactions

Landlords Receiving Rent Payments

Attorneys Receiving Legal Fees

How to Complete Form W-9

Backup Withholding

24% Withholding Rate

FATCA Exemption Codes

Frequently Asked Questions

Official Resources

Complete Your W-9