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Delaware Corporation Income Tax - Request For Extension
, or request a six-month extension here .Extracted from PDF file 2025-delaware-form-1100t-ext.pdf, last modified May 2025Corporation Income Tax - Request For Extension
D ELAWARE DIVISION OF REVENUE F 2 O0 2R 5 M CIT-EXT Corporate Income Tax Request for Extension Calendar or Fiscal Year Ending Taxpayer ID 12-31-2025 Prepare For Print Reset Due on or before Extension to 04-15-2026 10-15-2026 Name of Corporation Street Address City State Zip Code BALANCE DUE FROM LINE 7 OF WORKSHEET .00 AMOUNT OF THIS PAYMENT .00 Check here if a request for change form is being filed TAXPAYER’S WORKSHEET AND RECORD OF PAYMENTS 1. ESTIMATED DELAWARE TAXABLE INCOME FOR THE YEAR 1. 2. CORPORATE INCOME TAX RATE 2. 3. Multiply Line 1 by Line 2 3. .00 4. ESTIMATED TAX PAID 4. .00 5. Subtract Line 4 from Line 3 5. .00 6. LESS CREDIT CARRYOVER 6. .00 7. AMOUNT DUE WITH EXTENSION - Subtract Line 6 from Line 5 7. .00 BE SURE TO SIGN YOUR RETURN BELOW AND KEEP A COPY FOR YOUR RECORDS Under penalties of perjury, I declare that I have examined this return, including accompanying schedules and statements, and believe it is true, correct and complete. If prepared by a person other than taxpayer, the declaration is based on all information of which the preparer has any knowledge. AUTHORIZED SIGNATURE .00 8.70 MAIL COMPLETED FORM WITH REMITTANCE PAYABLE TO: Delaware Division of Revenue PO Box 0830 Wilmington, DE 19899-0830 DATE PRINTED NAME OF AUTHORIZED SIGNER PHONE NUMBER EMAIL ADDRESS DO NOT CUT THIS PAGE DFCITEXT2025019999V1 Revision 20250528 Page 1
Form 1100T-EXT
More about the Delaware Form 1100T-EXT Corporate Income Tax Extension TY 2025
This form is used by corporations to request for an extension on reporting their earnings for the year.
We last updated the Corporation Income Tax - Request For Extension in March 2026, so this is the latest version of Form 1100T-EXT, fully updated for tax year 2025. You can download or print current or past-year PDFs of Form 1100T-EXT directly from TaxFormFinder. You can print other Delaware tax forms here.
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TaxFormFinder has an additional 64 Delaware income tax forms that you may need, plus all federal income tax forms.
| Form Code | Form Name |
|---|---|
| Form 700 | Delaware Income Tax Credit Schedule |
| Form 1100-EXT (2014) | Corporation Income Tax - Request For Extension |
| Form 5401(8)CO | Realty Transfer Tax - Declaration for Certificate Of Compliance Or Occupancy |
| Form 300 | Delaware Partnership Return |
| Form 5402 | Realty Transfer Tax - Return And Affidavit Of Gain And Value |
View all 65 Delaware Income Tax Forms
Form Sources:
Delaware usually releases forms for the current tax year between January and April. We last updated Delaware Form 1100T-EXT from the Division of Revenue in March 2026.
Form 1100T-EXT is a Delaware Corporate Income Tax form. The IRS and most states will grant an automatic 6-month extension of time to file income tax and other types of tax returns, which can be obtained by filing the proper extension request form. Obtaining an extension will prevent you from being subject to often very large failure-to-file penalties. However, in most cases this extension does not exempt you from the requirement to pay any tax owed in full by the return's original filing date.
About the Corporate Income Tax
The IRS and most states require corporations to file an income tax return, with the exact filing requirements depending on the type of company.
Sole proprietorships or disregarded entities like LLCs are filed on Schedule C (or the state equivalent) of the owner's personal income tax return, flow-through entities like S Corporations or Partnerships are generally required to file an informational return equivilent to the IRS Form 1120S or Form 1065, and full corporations must file the equivalent of federal Form 1120 (and, unlike flow-through corporations, are often subject to a corporate tax liability).
Additional forms are available for a wide variety of specific entities and transactions including fiduciaries, nonprofits, and companies involved in other specific types of business.
Historical Past-Year Versions of Delaware Form 1100T-EXT
We have a total of thirteen past-year versions of Form 1100T-EXT in the TaxFormFinder archives, including for the previous tax year. Download past year versions of this tax form as PDFs here:
2022 Form 1100T-EXT
1100T-EXT.pmd
2021 Form 1100T-EXT
1100T-EXT.pmd
2020 Form 1100T-EXT
1100T-EXT.pmd
2019 Form 1100T-EXT
1100T-EXT.pmd
2018 Form 1100T-EXT
13_1100_ext_1
2017 Form 1100T-EXT
13_1100_ext_1
2016 Form 1100T-EXT
13_1100_ext_1
2015 Form 1100T-EXT
13_1100_ext_1
2014 Form 1100T-EXT
1100_EXT.pmd
2013 Form 1100T-EXT
13_1100_ext_1
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