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Fill out Form W-4

Employee's Withholding Certificate. The IRS's own form, ready to type on: click a field, type, sign and date it, and download. What you type never leaves this device.

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About this form

The form you give your employer so they know how much federal income tax to withhold from your pay.

This is the IRS's own PDF, 2026, as published at irs.gov. The IRS explains who needs it and how to fill it in on its Form W-4 page, which also lists any newer revision: check before you send it.

pdfedge isn't the IRS and doesn't give tax advice.

In your code

Filling Form W-4 for many people? POST /v1/fill takes the IRS's PDF by its URL and the values by the form's own field names, which POST /v1/extract lists with "include": ["fields"]. One document per fill.

Get a free key · API reference →

curl https://api.pdfedge.com/v1/fill \
  -H "X-API-Key: $PDFEDGE_KEY" -H "Content-Type: application/json" \
  -d '{"file":"https://www.irs.gov/pub/irs-pdf/fw4.pdf","data":{"topmostSubform[0].Page1[0].Step1a[0].f1_01[0]":"Priya"}}'

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