Fill out and sign a W-9 on your phone
No laptop, no printer, and a client wants your W-9 today? A phone is enough. Below are three ways to do it — in the browser with the signer on this page, with the tools built into an iPhone, and with Google Drive on Android — and what each one can and can't do.
Plan bought on your computer? Sign in on this phone
Open the W-9, W-4, W-8BEN or direct deposit form you were sent, type into its fields and add your signature — the PDF and the SSN or bank details on it stay in this browser.
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Updated 28 September 2026 · Written by Joe Farwick, who runs this site
Option 1: this signer, in Safari or Chrome
First get the PDF onto the phone. From an email, tap the attachment and use the share button to save it to Files on an iPhone; on Android, the download ends up in Downloads. If nobody sent you a form, download the current W-9 (Rev. March 2024) from irs.gov.
Open this page and tap the drop area; your phone shows its file picker, where you choose the W-9. The IRS form is fillable, so a Form Fields list appears: tap each field and type your name, the business name if any, your address and your number, and tick one box on line 3a. For a scanned form without fields, tap on the page where the text belongs instead.
Then create your signature. Draw it with your finger — or type your name and choose a handwriting style if drawing on a small screen isn't working out — and tap the Part II line labelled “Signature of U.S. person” to place it. Drag it into position, use Add Date for the date box, and download. Your phone saves the signed PDF to Files or Downloads, ready to attach to an email or upload to the requester's portal.
The file is processed inside the browser on your phone; it isn't uploaded to this site. The signature you drew is kept in this browser's storage for the next form you sign here.
Option 2: the iPhone's built-in tools
Apple's own instructions describe a free, built-in way. Open the form; if you're prompted, open it in the Files app and tap Save. Tap a blank field and type with the onscreen keyboard — AutoFill can suggest details saved in your contact card. To sign, tap the Markup button, then Add Signature, sign with your finger, tap Done and drag the signature into place. When you're finished, share or export the completed document.
It's a good option if you only sign a W-9 once in a while. It doesn't check your taxpayer number or help with line 3a, and the finished PDF is whatever the app produces — look through the result before you send it.
Option 3: Google Drive on Android
The Google Drive app can fill in PDF forms: open the PDF in Drive, tap Edit, then Form filling, enter your information and tap Save. If the option doesn't appear, Google says you may not be able to fill in that PDF; a scanned form has no fields to fill.
Google's help page for this feature doesn't describe adding a handwritten signature. You can fill the fields in Drive and then open the saved PDF in this signer to add your signature, or do the whole form here.
Sending the signed W-9 from your phone
Use the channel the requester asked for: its vendor portal, a secure upload link or email. Attach the file from Files or Downloads rather than pasting a screenshot — a photo of a screen is harder to read and loses the form's layout.
Before you hit send, open the downloaded PDF once more and check line 1, the box on line 3a, the number in Part I and the signature and date. Afterwards, delete extra copies from your Downloads folder and any chat apps you used to move the file around.
On your phone, in this browser
Works in Safari on iPhone and Chrome on Android.
- 1
Save the W-9 to your phone
Open the email attachment and save it to Files (iPhone) or Downloads (Android), or download the form from irs.gov.
- 2
Open it here and fill it in
Tap the drop area above, pick the PDF, and type into the fields in the Form Fields list.
- 3
Sign with your finger
Draw your signature, tap the Part II signature line to place it, add the date and download.
W-9 on a phone: questions
Why can't I type into the W-9 on my phone?+
Some PDFs have no real form fields — scans, or forms that were printed to PDF. Then there is nothing to type into directly; tap on the page here to add text boxes instead.
Will a requester accept a W-9 signed on a phone?+
The IRS doesn't distinguish between devices; it lets requesters accept W-9s electronically, and each requester decides what it accepts. A drawn signature with the date matches what the form's signature row asks for.
Can I use this signer on an iPad or Android tablet?+
Yes — the same steps work in the tablet's browser, and the bigger screen makes placing the signature easier.
What does signing on a phone cost here?+
The same as on a computer: filling in and signing is free to try, and downloading the signed PDF needs a plan at €2.99 a month or €24.99 a year. A plan bought on your laptop works on your phone after you sign in with the same email; cancel anytime, and it runs to the end of the paid period.
Small-screen tips
Turn the phone sideways
Landscape usually gives your finger a wider pad for the signature and makes the page easier to read.
Resize after placing
Drag the signature and pull its corner until it sits inside the Part II row, then do the same with the date.
Check the digits twice
Phone keyboards make typos easy. The TIN check on the homepage flags impossible SSNs and EINs.
Sign your W-9 on this phone
Tap the drop area above and pick the PDF — it stays on the device.
Choose the W-9