W-9 Form for Freelancers: What It Is and What Happens After You Send It

A client sends you a project, then asks you to fill out a W-9 before they'll process payment. If you're new to freelancing, that request can feel either routine or vaguely suspicious — sometimes both. It's routine. A W-9 is the form clients use to collect the information they need to report your income to the IRS. Here's what it actually involves.

What a W-9 is and why clients ask for it

Form W-9 — officially titled Request for Taxpayer Identification Number and Certification — collects your legal name, your business name if you have one, your address, and your Taxpayer Identification Number. That TIN is either a Social Security Number or an Employer Identification Number. Clients use it to fill out a 1099-NEC at year end, which reports to the IRS what they paid you. They keep the W-9; they do not file it with the government. You receive a copy of the 1099-NEC in late January of the following year.

Any business that pays an individual $600 or more in a calendar year for services is generally required to file a 1099-NEC. The W-9 gives them the information to do it. If a client never asks for one, or loses yours, that's their compliance problem — but providing it keeps the relationship clean and your records consistent.

SSN or EIN: what to put on the form

If you're a sole proprietor with no formal business entity, you can use either your Social Security Number or an Employer Identification Number. An EIN is free to get — the IRS issues one online in about five minutes. Using an EIN instead of your SSN is a meaningful privacy improvement: if a client's records are ever compromised, your Social Security Number is not part of the exposure. Once you have an EIN, you can use it with every client indefinitely.

If you've formed an LLC or are taxed as an S-corp, use that entity's EIN and make sure the name on the form exactly matches the entity your client is paying. Mismatches between the name and TIN on file with the IRS create year-end headaches that are annoying to resolve.

What happens after you send a W-9

By January 31 of the following year, any client who paid you $600 or more will send a 1099-NEC — electronically or by mail. That form reports the income to the IRS and gives you a number to compare against your own records. Check it against your invoices: discrepancies happen, especially when payments span two calendar years or projects get partially canceled. If the number is wrong, contact the client to issue a corrected 1099 before you file.

Whether or not you receive a 1099, you owe taxes on all income you earn. The form is a reporting mechanism, not the trigger for tax liability. Freelancers who get paid under $600 by a given client, or who get paid through a platform that doesn't issue 1099s, still owe self-employment and income taxes on every dollar.

Does every client need a W-9?

Not always. Corporations structured as C-corps or S-corps are generally exempt from the 1099-NEC filing requirement, which is why larger corporate clients sometimes skip the W-9 request entirely. Payment processors like PayPal, Stripe, and Venmo for Business issue their own 1099-K forms when you cross certain transaction thresholds, and they operate outside the standard W-9 workflow. Some small clients simply never ask — legally, that's their risk.

If your freelance work grows to include hiring or paying subcontractors, the dynamic reverses: you collect W-9s from anyone you pay $600 or more in a year, and you issue 1099-NECs to them the following January. The same form you fill out for clients becomes the one you collect from the people you pay.