May 17, 2021 Is Your Last Chance to Extend Personal Income Tax Deadlines May 14, 2021May 14, 2021 Gabrielle GirardIRS ExtensionsNo Comment on May 17, 2021 Is Your Last Chance to Extend Personal Income Tax Deadlines Taxpayers can extend their Form 1040 deadlines with Form 4868 for the 2021 tax day deadline.