How to fill out a government form on your phone
Most U.S. government forms are a free PDF on the agency's website, and most of them can be completed, signed and sent from a phone in a few minutes. The parts that trip people up are getting the right file, knowing which fields are actually required, and knowing the handful of forms that still insist on paper. This guide covers all three, then points you to a field-by-field page for each common form.
1. Get the official PDF, from the agency
Every form in this guide is public domain and free. Download it from the agency that issues it, not from a search result that re-hosts it: forms are revised (the W-9 and I-9 both changed recently) and an old revision can be refused. On the agency page, tap the PDF link, then save it: on iPhone, tap Share and Save to Files; on Android it goes to Downloads.
| Form | Agency | Our field-by-field page |
|---|---|---|
| W-9 | IRS | Fill out a W-9 on your phone |
| W-4 | IRS | Fill out a W-4 on your phone |
| I-9 | USCIS | Fill out Form I-9 on your phone |
| 1099-NEC | IRS | Fill out a 1099-NEC on your phone |
| SS-5 | SSA | Fill out Form SS-5 on your phone |
| REG 135 | California DMV · California | Fill out a California bill of sale (REG 135) on your phone |
| HSMV 82050 | Florida HSMV · Florida | Fill out a Florida bill of sale (HSMV 82050) on your phone |
| MV-912 | New York DMV · New York | Fill out a New York bill of sale (MV-912) on your phone |
| TD-420-065 | Washington DOL · Washington | Fill out a Washington bill of sale (420-065) on your phone |
2. Open it in a fill-and-sign app
A PDF viewer shows the form; a fill-and-sign app lets you write on it. In FormFill, tap Import PDF on the home screen and pick the file you saved. It does not matter whether the PDF has fillable fields: FormFill places your text on top of the page, which also means a photographed paper form works the same way (tap Scan instead).
3. Fill only what the form asks of you
Government forms are shared between parties, so read the headings. On a W-4, Steps 1 and 5 are required and 2 to 4 are optional; the employer block at the bottom is not yours. On an I-9, the employee completes Section 1 only. On a bill of sale, the seller's and buyer's blocks are separate, and the odometer reading often lives on the title rather than the bill of sale. Filling a block that belongs to someone else is the most common reason a form bounces back.
- Tap Text, then tap the line where an answer belongs and type. Pinch to zoom on small boxes; drag the text to line it up and pull a corner to resize.
- Use Check for checkboxes and check exactly one where the form says "check one".
- Use Date for date lines so the format is consistent.
- For numbers that go in individual boxes (an SSN or EIN), type the digits with spaces so each lands in its box, or type once and stretch the text box across them.
- Leave an optional field blank rather than writing "N/A", unless the instructions ask for it.
4. Sign where a signature is allowed
Tap Sign to draw your signature (saved for reuse with Pro) and place it on the signature line, not the printed-name line above it. Most forms you hand to a business or an employer accept a signed PDF. A few do not: Form SS-5 wants an ink signature on paper, and Copy A of Form 1099-NEC cannot be filed from a home-printed PDF at all. When in doubt, the form's own instructions say "sign in ink" or "original signature" where it matters.
5. Finish, check, send
Tap Done. FormFill flattens your entries into the PDF so they cannot be moved or edited by the recipient, and offers Share a copy or Save to device. Open the exported file once before sending: look for text that drifted off its line, a missed checkbox, and the signature on the right line. If the recipient wants paper, print this flattened PDF; it prints exactly as you see it.
Forms that still need paper
| Form | What needs paper | What you can still do on the phone |
|---|---|---|
| 1099-NEC | Copy A to the IRS: e-file through IRIS or use the scannable red form | Fill Copies B, C, 1 and 2 and send Copy B to the contractor as a PDF |
| SS-5 | Ink signature, handed in or mailed with original documents | Type every other item neatly, then print and sign |
| I-9 | Whatever the employer's retention system requires | Complete Section 1; the employer completes Section 2 after seeing your documents |
| DMV bills of sale | Usually none, but the title itself must still be signed over | The whole bill of sale, signed by both parties |
Fill and sign any form on your phone
FormFill turns any paper or PDF form into a fillable, signable document: import or scan it, tap anywhere to fill it in, drop a reusable signature, then flatten and send a clean PDF. Everything stays on your device.
Questions people ask
Where should I download a government form?
From the agency that issues it: irs.gov for tax forms, uscis.gov for immigration forms, ssa.gov for Social Security forms, and your state's motor vehicle agency for DMV forms. Third-party copies can be out of date, and some charge for a free public-domain form.
Does the PDF need to be fillable?
No. A fill-and-sign app like FormFill writes on top of the page, so a flat PDF or even a photo of a paper form works. Fillable fields help on a desktop; on a phone, tapping where the answer goes is simpler.
Can I sign a government form electronically?
It depends on the form and who receives it. A W-9 or W-4 going to a business is normally fine as a signed PDF. Form SS-5 must be signed in ink on paper, and Copy A of a 1099-NEC must be e-filed or printed on the IRS's scannable form. Check the form's instructions, or the form page in our library, before you send.
Is anything uploaded when I fill a form in FormFill?
No. FormFill fills and signs on the device, with no account and no server. The only copy that leaves your phone is the one you share.
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