How to Fill Out and Sign a W-9 Online for Free

You can fill out and sign a W-9 online for free by downloading the fillable PDF from IRS.gov, typing your information into the fields in any modern browser or in Adobe Acrobat Reader, adding an electronic signature with the same free software, and sending the finished file back to whoever requested it. Most people finish in under ten minutes. The form itself never goes to the IRS: the business paying you keeps it on file so they can report your payments on a 1099 when they cross $600 for the year.¹²

Get the Form From IRS.gov, Not a Third Party

Go to irs.gov and search for “Form W-9.” The current version is Form W-9 (Rev. March 2024). The PDF is fillable, so you can click into each field, type your responses, and save the completed file without ever printing it.

Plenty of third-party sites offer to let you “fill out your W-9 online” and then ask for a credit card at the download step. There is no reason to pay. The form is free from the IRS and always has been. Some sites are worse than useless: phishing operations sometimes disguise themselves as W-9 request pages to harvest Social Security Numbers. Stick to irs.gov, or use a form the paying business hands you directly through their own system.

What to Have in Front of You

A few minutes of prep prevents the errors that trigger backup withholding later. You need:

Your legal name exactly as it appears on your tax return. The IRS matches the name and taxpayer identification number you provide against its records, and mismatches cause problems.²
Your business or DBA name, if you use one.
Your Social Security Number or Employer Identification Number.
Your federal tax classification (individual, sole proprietor, LLC, S corp, and so on). If you are not sure, check your formation documents or your last tax return.

Filling Out Each Field

Lines 1 and 2: Your Name and Business Name

Line 1 is the name shown on your income tax return. Individuals and sole proprietors put their personal legal name here. Corporations, partnerships, and multi-member LLCs put the entity’s name as it appears on the entity’s return.³

Line 2 is for a business or trade name that differs from Line 1. A freelancer working under their own name can leave it blank. Single-member LLC owners put their personal name on Line 1 and the LLC’s name on Line 2, because the IRS treats a single-member LLC as a disregarded entity and reports its income under the owner’s name.³

Line 3a: Federal Tax Classification

Check the one box that matches how the IRS classifies you:³

Individual/sole proprietor or single-member LLC. This is the right box for most freelancers and independent contractors. Single-member LLCs check this box, not the LLC box.
C Corporation or S Corporation, matching your entity’s election.
Partnership, including general and limited partnerships.
Trust or estate.
LLC. Use this only for a multi-member LLC or an LLC that has elected corporate taxation. If you check it, enter a letter code: C for C corporation, S for S corporation, or P for partnership.

The most common mistake on the whole form is a single-member LLC owner checking the LLC box. The instructions are explicit: a disregarded entity checks the box matching its owner’s tax classification, which for solo freelancers means Individual/sole proprietor.³

Line 3b: Foreign Partners or Owners

This line only applies if you checked Partnership, Trust/estate, or LLC with a P code, and you are providing the W-9 to a partnership, trust, or estate in which you have an ownership interest. Check the box if any of your partners, owners, or beneficiaries are foreign persons. Individual freelancers and sole proprietors skip this line.³

Line 4: Exemption Codes

Most people leave this blank. The two fields are for a backup withholding exemption code and a FATCA reporting exemption code, and they apply to certain entities like corporations, government agencies, tax-exempt organizations, and financial institutions. Individuals and sole proprietors are generally not exempt from backup withholding and should not enter anything here.³

Lines 5, 6, and 7: Address and Account Numbers

Line 5 is your street address. Line 6 is city, state, and ZIP. Use the address where you want 1099s mailed. Line 7 is optional, only used when the requester has given you specific account numbers to help them track payments.³

Part I: Taxpayer Identification Number

Enter your nine-digit Social Security Number if you are an individual or sole proprietor. Use your Employer Identification Number if you have a business entity with its own return. Federal law requires you to furnish this number to anyone who needs it for tax reporting.⁴

A resident alien who cannot get a Social Security Number can use an Individual Taxpayer Identification Number. An ITIN is issued solely for federal tax purposes; it does not entitle you to Social Security benefits and does not affect immigration status.⁵

Accuracy on this line matters more than anywhere else. If the name and TIN you provide do not match IRS records, the payer may have to start backup withholding at 24% of your payments.⁶ You can recover that money when you file your return, but it ties up your cash in the meantime.

Part II: Certification

Signing Part II certifies under penalty of perjury that your TIN is correct, that you are a U.S. person, and that you are not subject to backup withholding (or that you are, if the IRS has told you so). The signature can be physical or electronic.

Signing the PDF Electronically Without Paying

You do not need paid software. Adobe Acrobat Reader is free and has a Fill & Sign tool that lets you type, draw with a mouse or trackpad, or upload an image of your signature. Most modern browsers with built-in PDF viewers can add a drawn signature the same way.

A drawn or image-based signature is stronger than a typed name in a standard font, because typing “Jane Smith” in Times New Roman shows little intent to sign. Once you have signed, save the file as a flattened PDF if your software offers the option. Flattening locks the fields so no one can change your information after you send it.

Sending It Back Without Handing Over Your SSN

This is where most people get careless, and it is the part that actually creates risk. A completed W-9 contains your Social Security Number or EIN, your legal name, and your address. That is enough for identity theft on its own.

Do not send a completed W-9 through regular unencrypted email. If the requester has a secure client portal or an encrypted file-sharing system, use it. If neither is available, password-protect the PDF and send the password through a separate channel such as a text message or a phone call. Fax is also a reasonably secure way to send a single document.

Keep a copy of every W-9 you submit and a note of who received it and when. When 1099s arrive in January, you will want to compare the payer’s numbers against yours.

When to Send a New W-9

A completed W-9 does not expire on a set schedule. It stays valid until something changes. Send an updated form when:³

Your name changes because of marriage, divorce, or a legal name change.
Your TIN changes, for example a new EIN after a business restructure.
Your tax classification changes, such as a C corp electing S status or a sole proprietor incorporating.
Your exempt status changes and you can no longer claim it.

Some requesters ask for a fresh W-9 every year or two as a routine precaution. No rule requires it, but it is normal practice and not worth arguing about.

If You Are Not a U.S. Person, Do Not Use W-9

Form W-9 is only for U.S. persons: U.S. citizens, resident aliens, and entities created or organized under U.S. law such as domestic partnerships, corporations, and trusts.² Foreign individuals and foreign entities use the W-8 series instead. The most common is Form W-8BEN, which certifies foreign status for individuals who are beneficial owners of U.S.-source income.⁷ If you are not sure which side you fall on, sort that out with a tax professional before submitting anything.

What Happens if You Refuse or Get It Wrong

If you do not provide a W-9 when a payer asks, the payer must begin backup withholding at a flat 24% on your payments.⁶ The same withholding kicks in if the IRS notifies the payer that your TIN is wrong, or if you fail to certify that you are not subject to withholding.⁸ Many payers will simply refuse to release payment until they have a completed W-9, because paying you without one exposes them to IRS penalties.

There are direct penalties too:

Failing to provide a correct TIN carries a $50 penalty per failure, capped at $100,000 per calendar year.⁹
Providing false withholding information carries a $500 penalty per false statement, on top of any criminal exposure. The IRS can waive it if you did not owe tax for the year.¹⁰
Deliberately falsifying information under the Part II perjury certification can bring criminal fines and imprisonment.

1
Internal Revenue Service. Instructions for Forms 1099-MISC and 1099-NEC (04/2025)
2
Internal Revenue Service. Instructions for the Requester of Form W-9 (Rev. March 2024)
3
Internal Revenue Service. Form W-9 (Rev. March 2024)
4
Office of the Law Revision Counsel. 26 USC 6109 – Identifying Numbers
5
Internal Revenue Service. Topic No. 857, Individual Taxpayer Identification Number (ITIN)
6
Internal Revenue Service. Topic No. 307, Backup Withholding
7
Internal Revenue Service. About Form W-8 BEN, Certificate of Foreign Status of Beneficial Owner for United States Tax Withholding and Reporting (Individuals)
8
Office of the Law Revision Counsel. 26 USC 3406 – Backup Withholding
9
Office of the Law Revision Counsel. 26 USC 6723 – Failure to Comply With Other Information Reporting Requirements
10
Office of the Law Revision Counsel. 26 USC 6682 – False Information With Respect to Withholding