Why Worry About Delaware? eFile Delaware Business Taxes in No Time
X.TAX simplifies tax filing for all Delaware businesses while maximizing your savings.

Get Clarity on Delaware’s Business Taxes
Know Biz Taxes in Delaware Better
Delaware is a top choice for businesses due to its business-friendly tax policies—no sales tax, no state property tax, and favorable corporate regulations. The state offers various tax credits and exemptions, making it an ideal hub for startups and large enterprises alike.
All DE Business Tax Forms in One Place
Know DE Business Tax Forms, which required for your business to stay compliant with Delaware regulations and avoid penalties.
Corporations
- Form 1120 – U.S. Corporation Income Tax Return
- Form 1120S – U.S. Income Tax Return for an S Corporation
- Form 5 – Annual Franchise Tax Report
Partnerships
- Form 1065 – U.S. Return of Partnership Income
- Form 3 – Partnership Return of Income
For LLCs and Sole Proprietors
- Form 1 – Annual Franchise Tax Report for LLCs
- Form Corp-ES – Estimated Tax Payment Form for Corporations
- Form PW-1 – Registration for Sole Proprietorships
For Estates and Trusts
- Form 1041 – U.S. Income Tax Return for Estates and Trusts
- Form FID-TAX – Delaware Fiduciary Income Tax Return
- Form FID-EST – Estimated Tax Declaration for Fiduciaries
File Delaware Business Taxes in Just 4 Steps
Accurate, efficient, and stress-free DE Biz filing with X.TAX.
Create an Account
Set up your profile securely.
Upload Your Information
Enter your income, expenses, and tax forms.
Review for Errors
Use smart tools to verify accuracy.
Submit to the State
File with one click and track your submission.
Key Delaware Business Tax Deadlines
Never miss a deadline with X.TAX reminders.
Business Type | Forms | Due Date | Extension Deadline |
---|---|---|---|
Corporations | Form 1120 (C Corporation Income Tax Return) | April 15, 2025 | October 15, 2025 |
Form 1120S (S Corporation Income Tax Return) | March 15, 2025 | September 15, 2025 | |
Form 5 | March 1, 2025 | N/A | |
Partnerships | Form 1065 (Partnership Income Tax Return) | March 15, 2025 | September 15, 2025 |
Form 3 | March 15, 2025 | September 15, 2025 | |
LLCs & Sole Proprietors | Form 1 | June 2, 2025 | N/A |
Form Corp-ES | Quarterly payments due on specific dates | N/A | |
Form PW-1 | No specific deadline, register as needed | N/A | |
Estates & Trusts | Form 1041 (U.S. Income Tax Return for Estates and Trusts) | April 15, 2025 | October 15, 2025 |
Form FID-TAX | April 15, 2025 | October 15, 2025 | |
Form FID-EST | Quarterly payments due on specific dates | N/A |
Maximize Your Savings with Delaware Tax Exemptions
Claim every tax benefit available to your business.
No Sales Tax
No Property Taxes
Corporate Income Tax Exemptions
Economic Incentives
Your Delaware Business Tax Filing Solution
Filing your Delaware business taxes has never been easier.
Audit Protect
- Detect and address audit triggers early using Data Signals.
- Manage audits efficiently with full support from X.TAX.
RiskScore
- Track your IRS account status in real time.
- Receive alerts about potential filing issues or unresolved balances.
AItomatic Filings
- Let CPAs handle your filings for $250.
- Includes audit protection for a full year.
QuickBooks Integration
- Import financial data directly for faster, error-free filings.
Why Delaware Businesses Trust X.TAX
See what our customers say.
Filing taxes in Delaware was effortless with X.TAX. Their platform is accurate and fast!
— John R.
We saved thousands thanks to Delaware’s tax exemptions. X.TAX made everything simple.
— Laura T.
Estate tax filing was stress-free with X.TAX. Their tools are a game changer!"
— Emma P.
X.TAX’s reminders kept us on track—no more last-minute filing stress!
— David K.
Accurate, reliable, and easy to use. We’re sticking with X.TAX!
— Sarah W.
Delaware Business Tax FAQs
Get clear answers to your tax questions.
What is the best e-filing software for Delaware business taxes?
X.TAX is tailored for Delaware businesses, offering reliable, secure, and accurate filing tools.
What forms do I need to file Delaware business taxes?
We provide all essential forms for corporations, partnerships, LLCs, and estates. See the full list above.
What are the key deadlines for Delaware business taxes?
Corporate filings are due April 15, partnerships by March 15, and LLCs by June 2.
What tax exemptions can Delaware businesses claim?
Delaware businesses benefit from no sales tax, no property tax, and various tax credits.
How does X.TAX ensure filing accuracy?
Our smart tools review filings and ensure compliance with Delaware tax laws.
How does X.TAX ensure filing accuracy?
Our platform uses advanced tools to review filings and ensure they meet Wisconsin tax laws.
Is X.TAX secure for Delaware business tax filings?
Yes! We use robust encryption to keep your data safe.