A W-9 is a tax form you fill out so someone can report what they paid you to the IRS

A W-9 form (officially "Request for Taxpayer Identification Number and Certification") is a one-page document you complete when someone hires you for work and needs to track the payment for tax purposes. The person or business paying you uses it to collect your name, address, and tax identification number — usually your Social Security number. They then report what they paid you to the IRS on a separate form called a 1099.

You do not send the W-9 to the IRS yourself. You give it to the person or business paying you, and they keep it on file. The IRS never sees your W-9 directly. What matters to the IRS is the 1099 form — the record of payment — which the payer files with the government and also sends to you by January 31 of the following year.

W-9s are common in situations where you are not a regular employee. Freelancers, contractors, consultants, and self-employed people fill them out regularly. But you might also fill one out if you are a regular employee and your employer needs to verify your tax ID, or if you earn money in other ways — selling items online, renting out a room, providing services to a business.

Key Takeaways

  • A W-9 is a form you complete to give someone your tax identification number so they can report payments to you to the IRS.
  • You give the W-9 to the person or business paying you, not to the IRS; they use it to file a 1099 form with the government.
  • Most contractors, freelancers, and self-employed people receive W-9 requests from clients or employers before starting work.
  • Filling out a W-9 does not change your tax obligations — it simply documents that you received income that must be reported.
  • You will receive a 1099 form by January 31 showing what was paid to you, which you use when filing your tax return.

Who asks for a W-9 and why

Businesses and individuals request W-9 forms when they plan to pay someone who is not their employee. The most common situations are hiring a contractor for a one-time project, paying a freelancer for ongoing work, or compensating someone for services like consulting, writing, design, or repairs.

The payer needs your W-9 because the IRS requires them to report all non-employee payments over a certain threshold. For most types of work, that threshold is $600 in a calendar year. If you earn $600 or more from one payer in a year, they must file a 1099 with the IRS. The W-9 gives them the information they need to do that correctly — your legal name, address, and tax ID.

Some businesses ask for a W-9 even if they do not expect to pay you $600 or more. They do this to have the information on file in case the amount reaches that threshold, or simply as standard practice. It is not a sign that you will definitely owe taxes; it is just paperwork to prepare for reporting.

What information goes on a W-9

The W-9 form has several sections, but most of it is straightforward. You will need to provide your full legal name, current mailing address, and city, state, and ZIP code. You will also enter your tax identification number — for most people, this is your Social Security number.

There is a section asking what type of entity you are: sole proprietor, partnership, corporation, or other. Most people check "sole proprietor" if they are self-employed or freelancing on their own. If you have formed a business entity like an LLC or S-corp, you would select the appropriate box.

The form also asks for your business name if it is different from your legal name. For example, if your name is Sarah Johnson but you do business as "SJ Consulting," you would enter both. At the bottom, you sign and date the form, certifying that the information is correct and that you are a U.S. citizen or resident alien.

When you will receive a W-9 request

A potential client or employer will usually send you a W-9 before they hire you or at the start of the work. Some send it as an email attachment or PDF. Others use online platforms — freelance job sites, payment processors, or accounting software — where you fill it out directly in their system instead of on paper.

You might also encounter a W-9 request when you sign up with a platform that pays you for services or sales. Rideshare companies, delivery services, online marketplaces, and gig platforms often require a W-9 before you can start earning. In these cases, you usually complete it as part of your account setup.

If someone does not ask for a W-9 but pays you $600 or more in a year, they are still required to report it to the IRS — they just may not have your correct information on file. This can create problems when you file your tax return, because the IRS will have a record of income paid to you that does not match your tax ID or address. It is better to provide a W-9 upfront so the information is accurate.

How filling out a W-9 affects your taxes

Completing a W-9 does not automatically change what you owe in taxes. It is simply a record-keeping document. However, it does signal that you will receive a 1099 form at the end of the year, and that 1099 will report income you must declare on your tax return.

If you are self-employed or a contractor, you are responsible for reporting all income you receive, whether or not you get a 1099. The 1099 is just a paper trail. The IRS receives a copy of every 1099 filed, so if you do not report the income on your return, the IRS will notice the discrepancy.

Self-employed income also means you may owe self-employment tax in addition to income tax. Self-employment tax covers Social Security and Medicare contributions that employees normally split with their employer. You calculate this when you file your return, usually using Schedule SE. A tax professional or tax software can walk you through this if you are unsure.

What happens after you submit a W-9

Once you give the payer your completed W-9, they file it away and use the information to prepare their tax records. You do not hear from them about it again unless something changes — for example, if you move and need to update your address, or if your tax ID changes.

At the end of the calendar year, the payer prepares a 1099 form showing how much they paid you. They send a copy to you (usually by January 31) and file a copy with the IRS. You will receive the 1099 in the mail or electronically, depending on how the payer handles it. Keep this document — you will need it when you file your tax return.

If you receive multiple 1099s from different payers, you report all of them on your tax return. You add up the income from all sources and report the total. If you are self-employed, you also complete a Schedule C (Profit or Loss from Business) to calculate your net income after expenses.

What to do if you do not have a Social Security number

If you are not a U.S. citizen or do not have a Social Security number, you can apply for an Individual Taxpayer Identification Number (ITIN) from the IRS. An ITIN is a nine-digit number that works like a Social Security number for tax purposes. You enter it on the W-9 in place of a Social Security number.

To get an ITIN, you file Form W-7 with the IRS. You can do this by mail or, in some cases, through an IRS-authorized agent. The process takes several weeks. If you need to start work before your ITIN arrives, ask the payer if they can wait for the W-9 or if they will accept a partial form with a note that your ITIN is pending.

Frequently Asked Questions

Do I have to fill out a W-9 if someone asks for one?

Yes, if you want to work with that person or business, you need to provide a W-9. It is a legal requirement for them to collect this information before paying you for non-employee work. Refusing to fill one out means they cannot hire you.

What if I fill out a W-9 but do not end up earning $600 from that payer?

If you earn less than $600, they are not required to file a 1099 with the IRS, but they may still do so. Either way, you are still responsible for reporting any income you received on your tax return, even if it is under $600.

Can I use the same W-9 for multiple clients?

No. Each client or payer needs their own copy of your W-9. You can fill out the same form multiple times — the information stays the same — but each payer keeps their own copy on file.

What if the information on my W-9 changes after I submit it?

If you move, change your name, or get a new tax ID, contact the payer and provide an updated W-9. This ensures the 1099 they file at year-end has your correct information, which prevents problems when you file your tax return.

Is a W-9 the same as a 1099?

No. A W-9 is a form you fill out and give to the payer. A 1099 is a form the payer fills out and sends to you and the IRS, reporting what they paid you. The W-9 provides the information needed to complete the 1099.