The State of Delaware has issued the following guidance regarding income tax filing deadlines for individuals:
- The state filing deadline has been extended to May 17th
- The payment deadline of May 17, 2021 will not be extended. Penalties and interest on underpayments will be calculated from that date, even if additional time to file is needed
- First quarter estimated tax payments remain due on April 15th
- If you have a 6-month Federal tax extension, the State of Delaware will automatically grant you a 6-month Delaware extension. In this case, you do not need to file a separate state extension application.