The Division of Revenue links for online filing options are available at https://revenue.delaware.gov/file/. Electronic filing is fast, convenient, accurate and easy. When completing a form electronically, please download the form prior to completing it to obtain the best results.
File Online – FREE!
No income requirements. Faster refunds.
The Division of Revenue links for online filing options are available at https://revenue.delaware.gov/file/. Electronic filing is fast, convenient, accurate and easy. When completing a form electronically, please download the form prior to completing it to obtain the best results.
2023 Fillable Forms / Instructions
Extension Request Form: Mail to State of Delaware, Division of Revenue, PO BOX 830, Wilmington, DE 19899-0830
Because the Delaware Estate Tax was repealed for individuals dying on or after January 1, 2018, this return is not required for 2019. If you have an estate involving a decedent who died prior to January 1, 2018, please use the 2017 forms linked below.