e-taxfiller is a free mobile PDF editor developed by airSlate Inc. It is designed to help users fill out and submit tax returns by providing a comprehensive PDF editor for documents. With e-taxfiller, users can fill out and submit 1099, W2, W-9, and other forms from anywhere and at any time. The app offers a library of 30+ fillable and signable forms that are arranged by type and provided with instructions from the IRS that guide users through the filing process.

The app offers versatile editing functionality that allows users to edit PDFs, insert images, add text arrows, checkmarks, lines, highlight, blackout, or erase text, and more. e-taxfiller also has a built-in eSignature option that allows users to sign a PDF tax form with a legally-binding and court-admissible electronic signature. The app's straightforward interface offers an intuitive eFiling process with smooth and simple navigation that allows users to fill out, sign, and send forms with a few taps on their mobile device. With e-taxfiller, users can be assured of high-level data protection as the app complies with necessary data protection regulations and meets industry-leading encryption standards.