Sign your W-9 in 60 seconds.

The challenges

• 1Tax forms contain your most sensitive information — SSN, EIN, bank details, income figures
• 2W-9s need to be signed and returned quickly when starting a new client relationship or freelance gig
• 3W-4s need updating when your tax situation changes (marriage, new job, new dependents)
• 4These forms have specific fields (checkboxes, dates, signatures) that generic PDF viewers can't fill
• 5Uploading tax documents to cloud-based signing platforms means your SSN is on their servers
• 6You need to keep signed copies for your own records during tax season

Why Cloud-Based Signing Apps Are Wrong for Tax Documents

Tax forms contain your Social Security Number, income details, and address. When you upload a W-9 to DocuSign, Signeasy, or SignNow, that document sits on their servers. Signeasy was caught downloading user contacts without permission. SignNow sent emails from their domain that looked like phishing. DocuSign charges enterprise prices for basic signing. You don't want your SSN on any of these platforms. Apple Markup can technically sign a W-9, but it can't fill the form fields properly. The W-9 has checkboxes, specific text fields, and requires a date. Markup makes you position text manually and has no checkbox tool.

How eSign PDF Keeps Tax Documents Private

eSign PDF processes everything on your iPhone. Your W-9 with your SSN never leaves your device. No server, no cloud, no account, no data collection. Open the W-9 PDF. AI detection highlights the fields. Type your name, business name, and address. Check the appropriate classification box. Enter your SSN or EIN. Sign and date at the bottom. Export as a flattened PDF where nothing can be modified. Email it to your client or accountant. Save a copy in your Tax Documents folder. The entire process takes 60 seconds and your sensitive data never touches the internet.

A day in the life

Recommended setup

• 1Keep blank copies of W-9, W-4, and other common tax forms saved in eSign PDF for quick filling
• 2Create a Tax Documents folder to organize all signed tax forms by year
• 3Always use flattened export for tax documents — protects your SSN from being edited after signing
• 4Back up signed tax documents to your iCloud Files folder for long-term record keeping
• 5Use the app offline when filling tax forms with sensitive information — no internet means zero chance of interception

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