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2020 Fillable Forms
Extension Request form: Mail to State of Delaware, Division of Revenue, PO BOX 830, Wilmington, DE 19899-0830
2020 Instructions
Schedule W Apportionment Worksheet
200-01X Resident Amended Income Tax Return
200-02X Non-Resident Amended Income Tax Return
DE2210 Underpayment of Estimated Taxes
Form 329 Special Tax Computation for Distribution from Qualified Retirement Plan
Because the Delaware Estate Tax was repealed for individuals dying on or after January 1, 2018, this return is not required for 2019.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.
Form 200EX Delaware Estimated Income Tax Voucher – 2020 – Request For Extension (Formerly 200ES-5E)
Form 200ESi Delaware Estimated Income Tax Voucher – 2020 – Instructions
Form 200ES REQ Request for Change
Form 200C-EX Delaware Estimated Income Tax Voucher – 2020 – Request For Extension
Form 200C-EX Delaware Estimated Income Tax Voucher – 2021 – Request For Extension
Form 400 Delaware Fiduciary Income Tax Return
Form 400i Delaware Fiduciary Income Tax Instructions
Form 400-ESi – Quarterly Declaration of Estimated Tax Return Instructions
Form 400-EX (5E) – 2020 Declaration of Estimated Tax Return Extension
Form 400-EX (5E) – 2021 Declaration of Estimated Tax Return Extension
Form 200C Delaware Composite Return
Form 200Ci Delaware Composite Return Instructions
Form 209 Claim for Refund of Deceased Taxpayer
Form 300 Delaware Partnership Return
Form 300i Delaware Partnership Return Instructions
Form 300 Schedule K1 Partners Share of Income
Form 700 Delaware Income Tax Credit Schedule
Form 800 Business Income of Non-Resident
Form 800 Business Income of Non-Resident Instructions
Form 5403 Real Estate Tax Return – Declaration of Estimated Income Tax
2021 Form 5506CPE Exemption from Public Utility Tax on Cell Phones