31, 2015 (2016 tax returns prepared during the 2017 tax filing season). A six-month extension is allowed from that date. These changes are generally effective for taxable years starting after Dec. 31 and June 30 year-ends (including those with other fiscal year-ends) will be due on the 15th of the 4th month after the year-end. Rep.) Costa Rica Croatia Cyprus Czech Republic Côte d'Ivoire Denmark Dominican Republic Ecuador El Salvador Equatorial Guinea Estonia Finland France Gabon Georgia Germany Ghana Gibraltar Global Greece Guatemala Guinea Honduras Hong Kong SAR, China Hungary Iceland India Indonesia Interaméricas Ireland (Republic of) Isle of Man Israel ישראל Italy Jamaica Japan Kazakhstan Kenya Kosovo Laos Latvia Liberia Liechtenstein Lithuania Luxembourg Macedonia Madagascar Malawi Malaysia Maldives Malta Mauritius Middle East Region Middle East Bahrain Egypt Iraq Jordan Kuwait Lebanon Libya Oman Qatar Saudi Arabia United Arab Emirates West Bank Gaza Moldova Mongolia Montenegro Mozambique México Mexico Namibia Netherlands Netherlands Antilles New Caledonia New Zealand Nicaragua Nigeria Norway Pakistan Panama Papua New Guinea Paraguay Peru Philippines Poland Portugal Romania Russia Россия Rwanda Senegal Serbia Singapore Slovakia Slovenia South Africa South Korea Spain Sri Lanka Sweden Switzerland Taiwan 臺灣 Tanzania Thailand Trinidad and Tobago Turkey Türkiye Uganda Ukraine Україна United Kingdom UK United States US USA U.S. 31, 2025 Starting with 2016 tax returns, all other C corps besides Dec.
One difference noted by the Department of Revenue is that Arizona this season has two extension deadlines: Oct.
Afrique Francophone Albania Andorra Angola Argentina Armenia Australia Austria Azerbaijan Bahamas Barbados Belarus Belgium Belgique België Bermuda Bolivia Bosnia and Herzegovina Botswana Brasil British Virgin Islands Brunei Bulgaria Cambodia Cameroon Canada Cape Verde Caribbean Cayman Islands Central and Eastern Europe Chad Channel Islands Chile China Colombia Congo (Brazzaville) Congo (Dem. Taxpayers also can file an Arizona extension request, Form 204, by July 15.