The heat is off for preparing your Pennsylvania state tax return for another month as well. The Pennsylvania Department of Revenue also has extended its deadline until May 17. "This is a positive step that provides additional time to Pennsylvania taxpayers, many of whom have been struggling during the last year due to the pandemic," Pennsylvania Revenue Secretary Dan Hassell said. But before you set those W-2 forms and bank records aside for a few more weeks, there are a couple of exceptions to the good news on the procrastination front. First, estimated tax payments that are due on April 15 are still due on April 15, the IRS reports.