2020 Arizona Amended Return Notice: Click here for guidance on amended a 2020 income tax return. You may file a Form 140X.If you choose this option, you must amend your Arizona return within 90 days of the final determination of the IRS. Forms Library Adobe Reader is required to open PDF forms. Visit the Adobe website to download the latest version. Additional forms may be found at the Superior Court's Law Library Resource Center website. It is highly recommended that you submit your filings on the A.C.C.'s website, eCorp. Complete and sign this form if (1) a tax return preparer filed a Form 1040 series tax return or altered your Form 1040 series tax return. You can search for reports, forms, policies and pamphlet and posters with information about specific programs and services. The "Guide and File" program can help a defendant complete and file a Tax Lien Answer form online.