納税フォーム
IRS W-9 form は、税金に関する情報を関連する税務当局に報告するために使用される文書である納税申告書の 1 つです。納税者の状況や場所によって、連邦税、州税、地方税など、さまざまな種類の納税申告書があります。

The IRS Form W-9, officially titled Request for Taxpayer Identification Number and Certification, is the cornerstone document for anyone who receives income that must be reported to the Internal Revenue Service. Whether you’re an independent contractor, freelancer, vendor, or a business entity, a correctly completed W-9 ensures accurate tax reporting and helps you avoid backup withholding.
The W-9 collects your legal name, business name (if applicable), address, and Taxpayer Identification Number (TIN). The TIN can be a Social Security Number (SSN) for individuals or an Employer Identification Number (EIN) for businesses. The form also includes a certification section where you attest that the information is correct.
Instead of downloading the PDF and opening a separate editor, simply click the "Fill out this form" button on this page. The Formize PDF Filler app loads directly in your browser, letting you type into each field, add a digital signature, and save or export the completed document—all without installing software.
You must provide a W-9 whenever a payer will report payments to you on Form 1099‑NEC or 1099‑INT. Typical scenarios include:
If the payer does not receive a completed W-9, they are required to withhold 24% of the payment as backup withholding.
If you prefer the raw document, you can download the official IRS PDF directly from the IRS website. The file is fully compatible with Formize, so you can still open it in the online filler.
Form W‑9 provides the requester with your correct Taxpayer Identification Number so they can report payments to the IRS on forms such as 1099‑NEC.
No. The completed W‑9 is given to the entity that asked for it (your client, payer, or financial institution), not to the IRS.
Foreign persons or entities that are not subject to U.S. tax usually complete Form W‑8 instead of W‑9.
Retain the completed form for at least four years in case the requester needs to verify the information.
The payer must apply a 24% backup withholding tax on payments made to you until a valid W‑9 is received.
Yes. Formize uses SSL encryption, and your data never leaves your browser unless you choose to download or share the file.
No. Once signed, any changes invalidate the form. If you need to make a correction, fill out a new W‑9.
You can reuse the same completed form for multiple requesters, as long as the information remains current.
IRS W-9 form は、税金に関する情報を関連する税務当局に報告するために使用される文書である納税申告書の 1 つです。納税者の状況や場所によって、連邦税、州税、地方税など、さまざまな種類の納税申告書があります。
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