IRS Form W-4 is a free application developed by PDFfiller. It is designed in order to allow users to e-file the Form W-4 directly from their mobile devices. All you need to do is to download this tax preparation app on your smartphone or tablet. After that, you can easily fill out the eForm on-the-go and submit it to your employer so that he/she will be able to withhold the accurate amount of income tax from your wages.

Basically, the application looks exactly like an IRS Form W-4 with fillable fields.

When you open the app, you can select the version of the form you need and immediately start editing it. There are arrows that help navigate you through the process of filling out the document. The arrows will also show you what fillable fields have to be completed with your information. You will not be able to submit the document until all of the required fields (which are marked with asterisks) are filled out. There is also a Wizard tool that shows the whole list of required fields and crosses them out when they are done.

The application has a whole set of unique editing features for your mobile version of Form W-4.

✓ You can tap on any part of the document and type the text or draw anything using a touchpad or stylus.
✓ Add checkmarks, dates, textboxes and graphical objects such as lines and arrows and even attach a picture.
✓ Make annotations by using sticky notes.
✓ Redact the text: erase unnecessary text, highlight what is important and blackout the parts you don’t want to disclose.

There are other fields which will include the calculations that have to be provided in order to establish the correct amount of income tax.

Completion of this eForm also requires you to indicate the following personal information:

✓ Name;
✓ Address;
✓ Social security number;
✓ ZIP code;
✓ Details of your employer.

When the digital form is done, it has to be signed - otherwise, it will not be considered valid.

To sign the blank, tap the signature icon on the panel and draw it on the touchpad with your finger or stylus. Confirm your signature and file the tax eForm by sending it to the relevant email address.