IRS Form W-9, officially titled “Request for Taxpayer Identification Number and Certification,” is a document used to provide your Taxpayer Identification Number (TIN) to a person or entity that will report payments made to you to the IRS.

Typically, the W-9 is used when:

• You’re working as a freelancer, contractor, or vendor
• A business needs to issue you a Form 1099-NEC, 1099-MISC, or 1099-INT
• A financial institution needs your information for reporting income like interest or dividends
  

Important: You do not send the W-9 to the IRS. You provide it only to the requester (the business or individual who will pay you or report your earnings).

Uses of Form W-9

The W-9 form is requested for a variety of IRS information reporting purposes. Common uses include:

1. Independent Contractors & Freelancers

Businesses request W-9s from contractors and freelancers to collect the necessary information (name, TIN, address) for preparing Form 1099-NEC.

Example:
Sarah, a freelance graphic designer, earns $3,000 from a company. They request a W-9 before issuing payment so they can file a 1099-NEC.

2. Vendor Payments

Service providers, consultants, and vendors may be asked to complete a W-9 to be added to a business’s payment system.

3. Bank and Investment Accounts

Banks use the W-9 to obtain information to report interest income (1099-INT) or dividends (1099-DIV) to the IRS.

4. Real Estate Transactions

Settlement agents may ask sellers or landlords to complete a W-9 for tax reporting purposes (such as Form 1099-S).

5. Debt Cancellations and Broker Transactions

Used to report forgiven debts (via 1099-C) or stock sales (via 1099-B), where the identity and TIN of the payee must be reported.

How to Fill Out Form W-9 – Line by Line

Let’s go through the form step by step so you know exactly how to complete each part.

Part I: Identification Details

Line 1 – Name

Enter your full legal name as it appears on your tax return.

Example: If your tax return lists you as “Jennifer L. Watson,” use that full name here.

Line 2 – Business Name / Disregarded Entity Name

If you’re doing business under another name (e.g., an LLC or a sole proprietorship), enter it here.

Example:
Name: Jennifer L. Watson
Business Name: Watson Writing Services LLC

Line 3 – Federal Tax Classification

Check the box that corresponds to how you file taxes:

• Individual / Sole Proprietor
• C Corporation
• S Corporation
• Partnership
• Trust / Estate
• LLC (enter the appropriate classification: “C”, “S”, or “P”)
  

Note: Single-member LLCs treated as sole proprietors usually check “Individual/Sole Proprietor.”

Line 4 – Exemptions

Only fill this out if:

• You are exempt from backup withholding (e.g., a corporation, certain entities)
• You are subject to FATCA reporting

Most individuals and small businesses leave this blank.

Lines 5 & 6 – Address

Enter the mailing address where you want to receive your 1099 form or any correspondence.

Line 7 – Account Numbers (Optional)

Use this only if the payer requests it for account identification purposes.

Part II: Taxpayer Identification Number (TIN)

Provide one of the following:

• Your SSN if you’re an individual or sole proprietor
• Your EIN if you’re a business or other entity

Example:

• Freelancers usually enter their SSN
• LLCs and corporations usually enter their EIN

Part III: Certification

Sign and date the form. By doing this, you confirm that:

1. The TIN you provided is correct
2. You are not subject to backup withholding (unless checked)
3. You are a U.S. citizen or U.S. person
4. The FATCA code, if any, is accurate

EIN vs. TIN – What’s the Difference?

• TIN (Taxpayer Identification Number) is a general term that includes:
  
  • SSN – for individuals
  • EIN – for businesses
  • ITIN – for resident/nonresident aliens
    
• EIN (Employer Identification Number) is a type of TIN used by businesses.

Tip: Freelancers can apply for an EIN to avoid using their SSN on every W-9.

Who Must Complete a W-9?

You must complete a W-9 if:

• You are a U.S. person (citizen or resident)
• You are receiving nonemployee income
• You’re paid for services, rent, royalties, or other 1099-reportable activities
• You are a financial account holder, or involved in real estate transactions

Do I Need to File W-9 With the IRS?

No. You do not file W-9 with the IRS.

Instead:

• You fill it out and return it to the person or organization requesting it
• That person uses it to issue your 1099 form at year-end
• You do not need to send a copy to the IRS
  

Example:
If you’re a contractor hired by a software company, they’ll request a W-9 from you before paying you. You send the form back to them, not the IRS.

Returning Form W-9

How to submit it safely:

• Use secure file transfer or encrypted email
• Never upload it to public sites or send via unsecured messages

Important: Keep a copy for your records. You may need to update it if your name, address, or TIN changes.

What Happens If You Don’t Provide Form W-9?

If you fail to submit a valid W-9:

• The payer must withhold 24% of your payments and send it to the IRS (this is called backup withholding)
• You may experience delayed or canceled payments
• The payer may issue a B Notice from the IRS if your TIN is incorrect or missing
• You risk audit triggers or penalties
  

Example:
You invoice a client $1,000, but haven’t submitted your W-9. They must withhold $240 and only pay you $760. The $240 goes to the IRS.

What Is Backup Withholding?

Backup withholding is a federal tax withheld from payments made to you when:

• You don’t submit a valid TIN
• Your TIN doesn’t match IRS records
• The IRS has notified the payer to begin withholding

The backup withholding rate is 24%.

When it applies:

• 1099-NEC contractor payments
• 1099-INT bank interest
• 1099-DIV dividends
• 1099-B broker sales

W-9 vs. W-4: What’s the Difference?

Here is the difference between Form W-9 and Form W-4.

Is a W-9 Used for Self-Employed Individuals?

Yes. Self-employed individuals must provide a W-9 when:

• A client plans to pay them $600 or more during the year
• The payer needs their TIN for 1099 reporting

Tip: Always submit a W-9 before starting a contract or project to avoid delays in payment.

What Is FATCA Reporting?

FATCA (Foreign Account Tax Compliance Act) applies to U.S. persons with financial accounts overseas. On Form W-9:

• Most people leave the FATCA section blank
• Only complete it if the form is requested by a foreign financial institution
  

W-9 vs. 1099: What’s the Difference?

What Is a W-9 for a Business?

If you’re a business, you’ll fill out Form W-9 when:

• A client or vendor requests it
• You’re providing services subject to 1099 reporting
• You’re opening accounts with a bank or brokerage

Use your business name and EIN when completing the form.

Do I Need to Complete a W-9 If I’m a Freelancer?

Yes. If you earn $600 or more from a client, the client is required to issue a 1099-NEC, and they’ll need your W-9 to do that.

Pro Tip: Applying for an EIN helps protect your SSN and keeps your tax and personal life separate.

Final Tips and Best Practices

• Always fill out your W-9 accurately and completely
• Submit it before you start working or receiving payments
• Use secure channels to return the form
• Apply for an EIN if you want to avoid using your SSN
• Don’t send it to the IRS — send it only to the requester

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