Tax glossary

Form W-9

Form W-9 — what it means, how it works, and a real example, explained without the jargon.

What is Form W-9?

A W-9 is the form a business asks you to fill out so it has your legal name and taxpayer ID on file before it pays you. It never goes to the IRS itself.

How it works

When you do contract work, the client collects a W-9 up front. At year-end they use the name and TIN on it to issue you a 1099 and report what they paid you. It's basic recordkeeping that lets the paperwork flow correctly.

A quick example

A freelance designer signs with a new client, emails back a completed W-9, and the following January receives a 1099-NEC built from the details on it.

What people get wrong

Only send a W-9 to a business you're actually working with, and send it securely — it contains your SSN or EIN. Unsolicited W-9 requests by email are a common phishing tactic.

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Frequently asked questions

What does Form W-9 mean?

A W-9 is the form a business asks you to fill out so it has your legal name and taxpayer ID on file before it pays you. It never goes to the IRS itself.

How does Form W-9 work?

When you do contract work, the client collects a W-9 up front. At year-end they use the name and TIN on it to issue you a 1099 and report what they paid you. It's basic recordkeeping that lets the paperwork flow correctly.

What's the most common mistake with form w-9?

Only send a W-9 to a business you're actually working with, and send it securely — it contains your SSN or EIN. Unsolicited W-9 requests by email are a common phishing tactic.