Illinois Form IL-W-4: Employee's Withholding Allowance Certificate

Fill out Illinois Form IL-W-4: Employee's Withholding Allowance Certificate online and generate the PDF, or fill it from your own app with the DocSpring API.

Fill Out Online Open in the Template Editor
Preview of Illinois Form IL-W-4: Employee's Withholding Allowance Certificate

About this form

Employees in Illinois fill in Form IL-W-4 so their employer withholds the right amount of Illinois income tax.

HR & Onboarding Tax Form Employment Form
Fill Out Online Use This Template

Three ways to use it

Fill it out online

Answer the questions on a web form, or type straight into the fields on the PDF. Switch between the two at any time.

Fill out the form

Fill it from your app

Send JSON to our API or one of our SDKs in 9 languages with your own API token, and get the filled PDF back. The PDFs are in your account, and we keep the form up to date.

Read the API guide

Make it your own

Copy the template to your account to move fields, add your own, and share your own online form.

Start a free trial

Try the API

Paste these commands into your terminal to generate a Illinois Form IL-W-4: Employee's Withholding Allowance Certificate PDF with a demo API token. To fill it from your own account, use one of your API tokens with its template ID, tpl_DmN6SLtFqDbN3Zafn5. Keep sending "version": "1.0.1" so that nothing changes for you when we publish a new version. 

curl -fSL "https://sync.api.docspring.com/api/v1/templates/tpl_DmN6SLtFqDbN3Zafn5/submissions" \
  -u "api_nXerNcJM5LRThDXgka:9pAJQZb5mYQZHjQHjZCQJJ9hxSPGL9ZAYc3QFxgQCE" \
  -d '{
    "version": "1.0.1",
    "data": {
      "ssn": "dolore",
      "employee_name": "sit do ex",
      "street_address": "ad dolo",
      "city": "labore ut",
      "state": "reprehenderit mollit",
      "zip": "94003-3829",
      "employee_signature": {
        "text": {
          "name": "sint ex amet occaecat",
          "typeface": "Sunshiney"
        }
      },
      "employee_signature_date": "2022-09-21",
      "exempt": true
    },
    "test": false,
    "metadata": {}
  }'
Copy to Clipboard

Fill out PDFs in minutes, not weeks

Sign up free and try DocSpring with your own PDFs: unlimited test PDFs, 200 free credits every month (about 10 filled PDF forms), and a 14-day trial of any paid plan. No credit card required.