The W-9 the easy way
A new client asked you for a W-9? We'll walk you through every line, every box, in plain English, in under 2 minutes.
By the Easy Guides Editorial Team
What the W-9 actually is
Form W-9 is one of the simplest forms the IRS publishes, but it confuses millions of freelancers, contractors, and small business owners every year. The form itself is one page. The instructions are six. And the consequences of getting it wrong include 24% backup withholding on every payment you receive.
Here's what you actually need to know: the W-9 is just a way for someone who's paying you to collect your Taxpayer Identification Number (TIN), usually your Social Security Number if you're a sole proprietor, or your Employer Identification Number if you operate as an LLC, S-corp, or other business entity. They need it so they can issue you a 1099-NEC at the end of the year if they pay you more than $600.
You're not sending the W-9 to the IRS. You're sending it to the person or company that's paying you. They keep it on file for their records and use the information to file the 1099 with the IRS in January.
When you'll be asked for a W-9
- Starting a new freelance or contracting relationship
- Selling goods or services as a vendor to a business
- Earning more than $600 in royalties, rents, or prizes
- Opening certain types of bank or brokerage accounts
- Real estate transactions (rentals, sales proceeds, mortgage interest)
- Being a board member, advisor, or consultant for a company
If any of these apply, the requestor needs your TIN before they can pay you (legally) without backup withholding.
Quick answers to common W-9 questions
Got a 1099 instead of a W-9?
If you've been doing freelance work and a client just sent you a 1099-NEC in January, that's the document that matches the W-9 you (probably) filled out earlier. The 1099 reports your earnings to the IRS, and to you, so you can file your taxes. For the full 1099 picture, see our sister site, 1099 Easy Guide.
Visit 1099 Easy Guide →W-9 guides for every situation
Common questions
What is a W-9 used for?
A W-9 gives a client your legal name, address, and taxpayer ID so they can report what they paid you. It stays with the client, never goes to the IRS, and no tax is withheld because of it.
Who has to fill out a W-9?
Independent contractors, freelancers, consultants, landlords, and businesses that get paid by another business. Employees fill out a W-4 instead.
Is it safe to send a W-9?
It is safe with a client you actually work for, since they need it by law. Send it through a secure channel rather than plain email, and never send one to someone who contacted you out of the blue.