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

• Delaware Individual Resident and Amended Income Tax Form (PIT-RES) – Fillable Form: this form will allow you to download, enter figures and calculate
• Delaware Individual Resident Income Tax Form Schedule (PIT-RSS)
• Delaware Individual Resident Schedule A Form (PIT-RSA)
• Delaware Individual Resident Income Tax Return – Instructions for Form (PIT-RES)
• Delaware Individual Electronic Filer Payment Voucher (PIT-VCH)

• Delaware Individual Non-Resident and Amended Income Tax Form (PIT-NON) – Fillable Form: this form will allow you to download, enter figures and calculate
• Delaware Individual Non-Resident Income Tax Form Schedule (PIT-NNS)
• Delaware Individual Non-Resident Schedule A Form (PIT-NSA)
• Delaware Individual Non-Resident Income Tax Return – Instructions for Form (PIT-NON)

• 2023 Income Tax Table

• Schedule W Apportionment Worksheet (PIT-SCW)
• Special Tax Computation for Distribution from Qualified Retirement Plan Form (PIT-STC)

• Delaware Underpayment of Estimated Taxes Form (PIT-UND)
• Form PIT-UND Underpayment of Estimated Taxes – Instructions

Extension Request Form: Mail to State of Delaware, Division of Revenue, PO BOX 830, Wilmington, DE 19899-0830

• Extension Request Voucher (PIT-EXT)  – Do Not Cut Form!

Because the Delaware Estate Tax was repealed for individuals dying on or after January 1, 2018, this return is not required for 2019.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.

• 2017 Form 900R Resident Estate Tax Return
• 2017 Form 900NR Non-Resident Estate Tax Return

• Form PIT-EST – Delaware Estimated Income Tax Voucher – 2024 – Select quarter using Quarter dropdown. Do Not Cut Form!
• Form PIT-EST Delaware Estimated Income Tax Voucher – Instructions
• Form 200ES REQ Request for Change

• Form CMP-EST Delaware Composite Estimated Income Tax Voucher – 2024 – Select quarter using Installment Due dropdown
• Form CMP-SCH Delaware Composite Income Tax Schedule

• Form FID-TAX Delaware Fiduciary Income Tax Return
• Form FID-TAX Delaware Fiduciary Income Tax – Instructions

• Form FID-EST – Quarterly Declaration of Estimated Tax Return – 2024 – Select appropriate quarterly installment due date from dropdown. 
• Form 400-ES (1E,2E,3E,4E) – Quarterly Declaration of Estimated Tax Return – 2023 – Select appropriate quarterly installment due date from dropdown. 
• Form FID-EST – Quarterly Declaration of Estimated Tax Return – Instructions

• Form FID-EXT – 2023 Declaration of Estimated Tax Return Extension

• Form FID-BEN Schedule K-1
• Form FID-VCH Electronic Filer Payment Voucher
• Form FID-VCH Electronic Filer Payment Voucher – Instructions

• Form CMP-TAX Delaware Composite Return
• Form CMP-TAX Delaware Composite Return – Instructions

• Form PIT-CFR Claim for Refund of Deceased Taxpayer

• Form PRT-RTN Delaware Partnership Return
• Form PRT-RTN Delaware Partnership Return – Instructions
• Form PRT-PSI Schedule K1 Partners Share of Income
• Form PRT-EXT Delaware Partnership Return Extension

• Form PIT-CRS Delaware Income Tax Credit Schedule

• Form PIT-BIN Business Income of Non-Resident
• Form PIT-BIN Business Income of Non-Resident – Instructions

• Form REW-EST Real Estate Tax Return – Declaration of Estimated Income Tax
• Form REW-EST Real Estate Tax Return – Declaration of Estimated Income Tax – Instructions

• 2024 Form 5506CPE – Exemption from Public Utility Tax on Cell Phones
• Form 5506CPE Exemption from Public Utility Tax on Cell Phones – Instructions

• Form ATH-RTF Authorization to Release Tax Information (formerly Form 8821DE)