b2KIT

W-9 Form Filler

Fill out IRS W-9 tax forms digitally and save as completed PDF.

Tested tool guide Tested browser tools Checked August 16, 2026

What W-9 Form Filler does, with a checked example

A W-9 is the form a US person gives to someone paying them, so the payer can report the income to the IRS on a Form 1099. This tool recreates the official form as an interactive page: you enter your name, business name, address, tax classification, and TIN, tick the certification boxes, and it assembles a completed PDF you can email or print. It runs entirely in your browser, so the form - including your Social Security number - never leaves your machine. The surprise most people hit: you do not file a W-9 with the IRS. It goes to the requester, and it is not complete until Part II is signed and dated.

Worked example

A concrete input and expected output from the current implementation.

Input

Name: Jane Doe / Business name: Doe Design Studio / Address: 210 Main St, Portland, OR 97204 / Classification: Individual/sole proprietor / TIN: 123-45-6789 (SSN) / Signature and date: Jane Doe, 2026-08-16

Expected output

A completed W-9 PDF with line 1 'Jane Doe', line 2 'Doe Design Studio', the Portland address, the 'Individual/sole proprietor' classification box checked, SSN 123-45-6789 in Part I, and the certification in Part II signed and dated, ready to email to the client that requested it.

Each entered value maps to the line the official form assigns to it, and the signature and date in Part II are what make the form complete for the requester. The tool maps and renders; it does not compute anything from the entries.

How the result is produced

1

Form fields

The tool collects the same information the official form asks for: name, business name, street address, city and ZIP, a federal tax classification (individual or sole proprietor, C or S corporation, partnership, trust, or LLC with its C/S/P code), optional exemption and account-number lines, and the TIN in Part I. Each entry is placed on the line it occupies on the paper form, so the finished document matches what a payer expects.

2

PDF output

Completing the form renders the entries onto the official layout and saves a finished PDF you can download, attach to an email, or print. Everything is generated locally in your browser - the form carries your Social Security number or employer ID, and none of it is transmitted anywhere. Before sending, check Part II: a W-9 is complete only when the certification is signed and dated.

Good uses

  • A freelancer or contractor onboarding a new client that needs a W-9 on file before the first invoice is paid.
  • A landlord, gig worker, or online marketplace seller asked to send a W-9 so the payer can report payments on a 1099.
  • Someone opening a bank, brokerage, or payment-platform account where interest or dividends will be reported under their TIN.

Limits and checks

  • Single-member LLC owners often fill line 1 and line 2 backwards: the owner's name belongs on line 1, the LLC name on line 2, with the owner's classification. Swapped, the 1099 arrives in the wrong name and may not match your tax return.
  • A W-9 is only for US persons, which includes resident aliens but not nonresident aliens. A nonresident must use Form W-8BEN instead; signing a W-9 as a non-US person is a false certification made under penalties of perjury.
  • A TIN that does not exactly match the name on file with the IRS can trigger backup withholding at 24% and a B-notice from the payer, so the number has to be exact. Also, no matter how complete the boxes look, an unsigned form is not a completed W-9.

Common questions

Do I mail the W-9 to the IRS once it's filled in?

No. The completed form goes to the requester - the company, platform, or bank that asked for it - never to the IRS. The requester uses your TIN to file information returns and applies backup withholding when the IRS directs it. Keep a copy for yourself, and send an updated form whenever your name, address, or business structure changes.

Can I type my signature, or do I need to print the form and sign it by hand?

Some requesters accept a PDF with a typed name in the certification box; others still expect a handwritten signature. Ask the payer which they accept before relying on a typed one. Either way, Part II must be signed and dated - a filled-in form with no signature is not a completed W-9 and will likely be sent back.

References and verification

The example and behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.

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