# Sign PDF for tax preparers

_Updated July 2026 · Arthize · https://arthize.com/for/tax-preparers/sign-pdf_

Arthize lets tax professionals sign a PDF in a private workspace — free, with no watermark. Signing a PDF lets you draw, type or add a digital signature and fill form fields, so you never print, sign and rescan a document again.

## Why tax preparers sign a PDF

A tax preparer merges the return with its schedules and supporting documents into one client file, extracts figures from a PDF form into a worksheet, and password-protects the final package.

**Built for tax returns.** Whether it's tax returns, W-2s and 1099s, schedules, Arthize's sign pdf keeps the work inside your private workspace. Returns contain Social Security numbers and income data; private processing and deletion are essential.

## What matters when you sign a PDF

A clear electronic signature is legally valid for everyday agreements in most countries.

Cryptographic digital signatures bind the signature to the document for higher assurance.

You can fill form fields and sign in the same tool without printing.

## How to sign a PDF

1. **Open the sign tool** — Sign in and open the sign-and-fill tool.
2. **Create your signature** — Draw it, type it in a signature font, or use a digital certificate.
3. **Place it and fill the form** — Drop the signature where it belongs and fill any fields, dates or checkboxes.
4. **Download the signed PDF** — Save the signed document with no watermark.

## FAQ

### How do tax preparers sign a PDF for free?

Signing a PDF lets you draw, type or add a digital signature and fill form fields, so you never print, sign and rescan a document again. On Arthize it's free with no watermark, and the file is deleted after the job — which is why tax professionals can use it for tax returns without a confidentiality risk.

### Is it private to sign a PDF sensitive tax returns?

Yes. Returns contain Social Security numbers and income data; private processing and deletion are essential. Files are processed inside your private Arthize workspace and deleted after the job.

### How do I sign a PDF online for free?

Signing a PDF lets you draw, type or add a digital signature and fill form fields, so you never print, sign and rescan a document again. On Arthize it's free with no watermark and processed privately.

### Is an electronic signature on a PDF legally valid?

Signing a PDF lets you draw, type or add a digital signature and fill form fields, so you never print, sign and rescan a document again. On Arthize it's free with no watermark and processed privately.