IRS Form 1120 Filing Service for Delaware Corporations Online
Form 1120 Filing Service in Delaware Starting From $350 View Pricing →
What's Covered in Our Delaware Form 1120 Filing Service
Delaware Entity Verification Against State Records
We check your legal name, tax year, and incorporation date against Delaware Division of Corporations records before filing.
Form 1120 Built Around Delaware's Incorporation-Only Structure
We prepare all required schedules and Form 1125-A, with Schedule K's incorporation location coded correctly.
Delaware Form 1100 Filed in Step With Your Federal Return
We prepare Form 1100 alongside Form 1120 so your state and federal numbers always match.
Registered Agent & Address Consistency Check
We confirm your Delaware registered agent address matches your IRS filing address to avoid notices.
Foreign-Owned Delaware Corp Filing (Form 5472 Handled Together)
For 25%+ foreign-owned corps, we prepare Form 5472 in the same pass as Form 1120.
Shareholder Filing Coordination for Delaware Cap Tables
We coordinate Form 1040 and Form 1040NR filings for resident and non-resident shareholders where needed.
IRS Form 1120 Filing For C Corp
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Form 1120 Filing Service for Delaware Corporations Online

If you incorporated your company in Delaware, you may already know that Delaware has its own business rules. But when it comes to federal taxes, the IRS still requires your corporation to follow federal tax rules, no matter which state it is incorporated in.
Our Form 1120 Filing Service for Delaware state helps prepare and file your U.S. Corporation Income Tax Return accurately and on time. Whether you are a first-time founder or have been running your company for years, we can help with the federal tax filing process.
If you own a Inc in Delaware, then understanding the requirements for IRS Form 1120 for Delaware Corporations can help you file your federal tax return correctly and on time, whether you are a U.S. resident or a non-resident founder.
What's the difference between Delaware's annual report and Form 1120?
Form 1120 is a federal income tax return that reports your corporation’s worldwide taxable income to the IRS. Delaware’s annual report is a separate state filing due March 1. It is not tied to income and is used to update your entity’s basic information along with your Delaware franchise tax and annual report filing with the Delaware Division of Corporations.

Do Foreign Owners of Delaware C Corps Need to File Form 1120?
Yes. Ownership doesn’t change the federal filing obligation – a Delaware corporation owes US tax on its worldwide income regardless of who owns it.
- Foreign-owned Delaware C-Corps must file Form 1120 annually, even with no US activity or a loss.
- This is separate from Delaware’s own franchise tax and annual report, which is owed to the state regardless of federal filing status.
- Due to complexity in filing form 1120, an Delaware C Corp tax filing service is usually the more reliable route than general tax software.
When Should I File Form 1120 - Before or After the Franchise Tax Deadline?
They’re independent deadlines, not sequential. Delaware’s Franchise Tax Report and annual report are due March 1 to the Delaware Division of Corporations, while federal Form 1120 and Delaware’s own Form 1100, filed with the Delaware Division of Revenue, are due April 15.
How Much Does It Cost to File Form 1120 for a Delaware C Corp?
Priced for How Delaware C-Corps Actually File
Your return follows current IRS rules and forms, built for Delaware corporations that operate outside the state.
No Extra Charge for Identifying the Right Schedules
We work out which schedules your entity needs, including Schedule K's state of incorporation, so you're never billed for what doesn't apply.
Form 5472 Priced Into a Single Filing, Not a Second Invoice
For foreign-owned Delaware corporations, Form 5472 is bundled with your Form 1120 instead of quoted separately.
One Price Whether You're Pre-Revenue, Active, or Dormant
Pricing covers new, active, and dormant Delaware C-Corps based on your actual filing needs, not a flat one-size fee.
Priced to Protect Your Delaware Standing, Not Just Your IRS Compliance
A missed or inaccurate federal filing can also complicate your Delaware good standing, on top of IRS penalties.
Delaware corporate income tax Preparation
- IRS Form 1120 preparation
- Schedule C, J, K, L, M-1 & M-2 (as applicable)
- Prior-year return & carryforward review
- Filing confirmation & copy for your records
- Extension filing (Form 7004), if needed
- Basic query support before filing
- E-filing with the IRS
Delaware Franchise Tax vs. Federal Form 1120: Two Separate Obligations
One common point of confusion for founders is the difference between Delaware corporate income tax vs. federal Form 1120 requirements.
Delaware has its own state-level 8.7% Delaware corporate income tax on income earned within the state. There is also a separate annual franchise tax requirement.
Form 1120 is a separate federal tax return filed with the IRS, not the state. It is used to report your corporation’s federal income and calculate its federal tax liability.
Paying Delaware’s franchise tax does not satisfy your federal Form 1120 filing requirement.
Every Delaware C-Corp still needs to file Form 1120 for Delaware Corporation at the federal level, even if it does not owe Delaware corporate income tax because the company did not conduct business within Delaware.
Our Form 1120 Filing Service for Delaware C Corporation focuses on this federal filing and is separate from the filings and requirements handled through the Delaware Secretary of State.
Delaware Corporate Tax Filing Deadlines
Even though this service focuses on your federal tax return, it helps to understand how the Form 1120 deadline compares with Delaware’s other filing deadlines. This all filings do not have same due date..
| Filing | Due Date | Filed With | Extension Available? |
|---|---|---|---|
| Federal Form 1120 | 15th day of the 4th month after year-end (typically April 15 corporate tax deadline) | IRS | Yes, through Form 7004 extension for Delaware corporations (6 months) |
| Delaware Form 1100 | Matches the federal deadline (typically April 15) | Delaware Division of Revenue | Generally follows the federal extension |
| Franchise Tax & Annual Report | March 1 - six weeks before the federal deadline | Delaware Division of Corporations | No extension available for franchise tax and annual report filing |
The March 1 date is for a separate filing. It is not covered by our Form 1120 Filing Service for Delaware C Corporation, but it is important to know about it so you don’t miss a separate Delaware deadline if you’ve done C Corp registration in USA Delaware
Does a Foreign-Owned Delaware C Corp Need to File Form 1120 and Form 5472?
If 25% or more of your Delaware C-Corp is owned by a non-U.S. person, additional IRS reporting may be required along with your regular corporate tax return.
- A Form 1120 for foreign-owned Delaware corporation may need to be filed together with Form 5472, which reports certain transactions between the corporation and its foreign owners.
- We can prepare Form 5472 along with our Form 5472 filing service so the information in both filings is consistent and submitted together.
- Many non-resident founders with a Delaware C-Corp with no U.S. office think Form 5472 only applies to LLCs. It does not. A Delaware C-Corp that meets the 25% foreign-ownership threshold may have Form 5472 reporting requirements, even if the company has never operated from a U.S. office.
If you’re unsure whether your ownership structure requires Form 1120 for foreign owned Delaware corporation reporting, we can review your ownership structure during onboarding at no extra cost.
Documents Required To File Form 1120 For Delaware Inc
- Certificate of Incorporation to confirm your legal name and Delaware incorporation date
- EIN (CP 575 or 147C letter)
- Profit & Loss statement and Balance Sheet for the full tax year
- Description of your business activity
- Bylaws and stock ledger (cap table) showing each shareholder's ownership
- Names and residential addresses of all shareholders, directors, and officers
- SSN or ITIN for US-resident shareholders and officers
- Passport of all members (Residents or Non Residents)
- Payroll records, W-2s, W-3, and Form 941 (if you have employees)
- Prior year's Form 1120, including any NOL carryforward
- Business expense records: rent, utilities, professional fees, and advertising
How Does US Global Startup's Delaware Form 1120 Filing Service Work?
We make the Delaware Form 1120 filing process simple by collecting your documents, preparing the return, reviewing the details, and filing it with the IRS.
Step 1: Share Your Company Details
Tell us about your shareholders, whether they are US residents or non-residents, and whether you have US income, US employees, or only income from outside the US.
Step 2: Get Your Quote and Document Checklist
Within 1 business day, we quote the forms that apply to your case and send the list of required documents. If you also need accounting from us, we include that too.
Step 3: Approve and Pay
Once you agree to the quote, we send a payment link. You can pay by direct bank transfer or through the payment link.
Step 4: We Start Your Paperwork
After payment is received and we have all your documents, we begin preparing your return.
Step 5: Review and Revisions
We send you the prepared file to review. If you need any changes, we make them and send it back for another review.
Step 6: E-File and Confirmation
Once you approve, we e-file your return and send you the confirmation with the IRS submission ID.
When Is Form 1120 Due for a Delaware C Corporation?
Form 1120 is due on the 15th day of the 4th month after your tax year ends. For most Delaware corporations using a calendar tax year, the deadline is April 15.
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Our Delaware C-Corp federal tax return filing service helps track your filing deadline. We also handle Non resident Delaware C Corp Form 1120 filing for business owners who live outside the United States.
Can I Get an Extension on Form 1120 Filing for Delaware Corporation?
Yes. Filing Form 7004 gives you an automatic 6-month extension to File Form 1120 for Delaware Corporation. For calendar-year corporations, this moves the filing deadline from April 15 to October 15.
The extension gives you more time to file the tax return, but it does not give you more time to pay any tax owed. The tax payment is still due by the original deadline.
Can I File Form 1120 Online for My Delaware Corporation?
Yes. Form 1120 can be e-filed with the IRS through IRS-authorized e-file software or a tax professional, and you can also mail a paper return. E-filing is faster and gives you an IRS acceptance confirmation. Delaware’s annual report and franchise tax must also be filed online, separately from your federal return. Our Delaware Corporation IRS tax filing service e-files your return and sends you the confirmation with the IRS submission ID.
Will Form 1120 Requirements Change for My Growing Delaware Company?
The Form 1120 itself stays the same, but your filing may become more complex as your company grows. Each new stage of growth can add new schedules, forms, and state filings.
- More revenue and expenses: Additional schedules, depreciation, and estimated tax payments may apply.
- New employees: Payroll filings such as W-2, W-3, and Form 941 are added.
- Foreign shareholders: Form 5472 may be required when foreign ownership reaches 25%.
- Operating in other states: Additional state tax filings may be required, including Delaware Form 1100 if you do business in Delaware.
- Assets of $10 million or more: Schedule M-3 may be required instead of the simpler Schedule M-1.
Our Delaware C Corp federal tax return filing service reviews your company each year to help ensure your filing matches its current size and structure.
Foreign Qualification Requirements for Delaware Corporations
Many businesses are incorporated in Delaware but actually operate, hire employees, or earn revenue in another U.S. state.
- This is where foreign qualification may be needed. It allows your Delaware corporation to register to do business in another state.
- Foreign qualification does not change your federal tax filing requirement. It adds another layer of state-level compliance.
- Whether or not you have completed foreign qualification in another state, your Delaware C-Corp still needs to file Form 1120 with the IRS each year.
Our team can help to keep your Form 1120 Filing for Delaware Corporation on schedule. If you’re unsure whether foreign qualification applies to your business, we can review where your company operates as part of the onboarding process for our Delaware Corporation Form 1120 Filing Service.
Do Dissolved or Inactive Delaware Corporations Still Need to File Form 1120?
A common mistake is assuming that a Delaware corporation no longer needs to file Form 1120 once it stops operating. In many situations, that is not the case.
- A Delaware corporation dissolved or inactive but still owes Form 1120 may need to continue filing until the corporation has properly completed its dissolution and filed its final federal tax return with the IRS.
- Simply stopping business activity does not automatically end the corporation’s federal filing obligations.
- If your company is winding down, we can help prepare the final return for a Delaware corporation dissolved or inactive but still owes Form 1120, covering its last required tax year.
This type of catch-up work is also part of our Delaware incorporated company tax return preparation support, especially for corporations that were inactive for a year or two before the owners decided to formally close the company.
What Happens If I Don't File Form 1120 for My Delaware C Corp?
If you do not file Form 1120, your Delaware corporation may face IRS penalties, interest, and other compliance problems. Our Form 1120 Filing Service for Delaware C Corporation can help you stay on top of your federal tax filing requirements.
Late-filing penalty:
If you owe tax, the IRS may charge 5% of the unpaid tax for each month the return is late, up to 25%.
Late-payment penalty and interest:
The IRS may also charge 0.5% per month on unpaid tax, plus interest on the unpaid balance.
Form 5472 penalty:
For a Form 1120 for foreign-owned Delaware corporation, a missed or incomplete Form 5472 can result in a $25,000 penalty per form.
IRS-prepared return:
The IRS may prepare a substitute return for your corporation. This may not include deductions or credits you could have claimed, which can increase your tax bill.
Open-ended exposure:
The IRS statute of limitations generally does not begin until you file the return, so an unfiled return can leave the tax issue open.
Delaware good standing:
Ongoing non-compliance may create problems with your Delaware corporate standing and can affect banking, funding, or due diligence.
Do I Have to File Taxes for My Delaware C Corp If I Have No Revenue?
Yes. Having no revenue does not automatically remove your filing obligations. An active Delaware C-Corp generally must continue filing, even if it earned nothing, had no expenses, or never opened a bank account.
- Federal Form 1120: A C-Corp generally must file Form 1120 every year, even if it had no income. A zero-revenue tax return may still be required.
- Form 5472: If your corporation is 25% or more foreign-owned, Form 5472 may be required, including in situations with no reportable transactions. The penalty for failing to file can be $25,000.
- Delaware Annual Report and Franchise Tax: Due March 1 every year, even if the corporation has never operated. The franchise tax is not based on income.
- Delaware Form 1100: This depends on whether your corporation does business in Delaware. Many Delaware C-Corps operate in other states, so we review your specific situation.
If you no longer want to keep the corporation, you generally cannot simply stop filing. Filing obligations can continue until the corporation is formally dissolved, and Delaware franchise tax can continue to accrue until then.
What if My Delaware C Corp Has No Employees: Does That Change Tax Filing?
No. Having no employees does not remove the Form 1120 filing requirement. An active Delaware C-Corp generally still needs to file, even if it has no revenue and no employees.
What you may not need are payroll filings, such as Form W-2, Form W-3, and Form 941, if the corporation has no employees.
Shareholder tax filings are separate from the corporation’s filing. A non-resident shareholder with U.S. employees and U.S. income generally need to file form 1040 NR.
Can I Deduct Startup Costs on My Delaware C Corp's Form 1120?
Yes, in most cases. Once your corporation starts active business operations, you may be able to deduct part of your startup and organizational costs in the first year.
- Up to $5,000 of startup costs can generally be deducted in the first year.
- Up to $5,000 of startup costs can generally be deducted in the first year.
- Each $5,000 deduction is reduced dollar for dollar when total costs exceed $50,000.
- Any remaining amount is generally amortized over 180 months.
- Startup costs can include market research, pre-opening advertising, and business travel.
- Organizational costs can include Delaware incorporation fees and legal fees related to forming the corporation.
These costs are generally reported using Form 4562 and included as deductions on Form 1120. Costs paid before the business begins operating are generally not deducted immediately. They are handled when the business starts active operations.
Do Delaware LLCs File Form 1120 or Different Forms?
Usually not. A Delaware LLC’s tax filing depends on how it is taxed.
A multi-member LLC generally files Form 1065, and we provide Form 1065 filing service for LLC. A single-member LLC is usually disregarded for federal tax purposes. A foreign-owned single-member LLC may need to file a pro forma Form 1120 with Form 5472.
If an LLC elects corporate taxation using Form 8832, it generally files Form 1120 like a C Corporation.
Frequently Asked Questions
Common question about form 1120 filing for delaware corporations
How Much Should I Budget for Form 1120 Preparation Costs?
If you file the return yourself, you may only need to pay for tax software. However, Delaware C-Corps may require additional schedules and forms, so many businesses prefer professional filing support.
With our Delaware Corporation Form 1120 Filing Service:
Form 1120 with all required schedules: $350
Form 1040 or Form 1040-NR, if required: $250 each
Accounting services, if needed: Additional $350
Can I Amend Form 1120 After I've Already Filed?
Yes. You can generally correct a filed return by submitting Form 1120-X for errors such as missed income, deductions, or credits. You generally have 3 years from filing the original return or 2 years from paying the tax, whichever is later. If the change affects your Delaware Form 1100, an amended state return may also be required. Our Delaware incorporated company tax return preparation service can help prepare the amendment.
Which IRS Form Do I File If I Own a Delaware C Corp?
You file Form 1120, the U.S. Corporation Income Tax Return, every year, even if you had no revenue. If your corporation is 25% or more foreign-owned, you also file Form 5472 with it.
Do Schedule K-1, K-2, and K-3 Apply to My Delaware C Corp?
No. Schedules K-1, K-2, and K-3 are for pass-through entities like partnerships (Form 1065) and S corps (Form 1120-S), so they don't apply to a C corp. Your Form 1120 does include a Schedule K, but that is a different section covering general questions such as ownership and state of incorporation. Shareholders of a C corp don't receive a K-1 either, since dividends are reported on Form 1099-DIV.
Do I Need to File Form 1040-NR If I Received No Salary, Dividends, or Other Payments From My Corporation?
Generally, no. The corporation's revenue belongs to the C corp, which reports and pays tax on it through Form 1120. A non-resident shareholder only needs Form 1040-NR if they personally received US-source income, such as salary, dividends, or other payments from the corporation, or had other US income of their own. If you received none of these and had no other US income, there is usually nothing to report on Form 1040-NR.
What Is Delaware Franchise Tax and How Does It Relate to Form 1120?
Delaware franchise tax is an annual fee paid to the state for maintaining your corporation in Delaware. It is due March 1 and is not based on your business income.
Form 1120 is your federal income tax return filed with the IRS. The franchise tax and Form 1120 are separate requirements with different deadlines.
The Delaware franchise tax you pay is generally deductible as a business expense on your Form 1120.
What's the Difference Between Form 1120 and Form 1120-S for My Delaware Company?
Form 1120 is the tax return for a C corp, which pays corporate income tax itself, and shareholders are taxed again on dividends. Form 1120-S is for an S corp, which generally pays no federal corporate tax because profits pass through to shareholders through Schedule K-1. An S corp is only available if all shareholders are US citizens or residents, so most foreign-owned Delaware corporations file Form 1120.
Can I Set Up a Delaware Corporation Without Filing Form 1120?
Yes. Form 1120 is not part of forming a Delaware corporation. You incorporate by filing a certificate of incorporation with the Delaware Division of Corporations and getting an EIN, and no tax return is needed at that stage. However, once your corporation exists, you must file Form 1120 every year, even with no revenue, until it is formally dissolved.
How Often Do I Need to File Form 1120 for My Delaware Corp?
You file Form 1120 once every year, for as long as your corporation exists, even if it had no revenue or activity. The filing is due April 15 for calendar-year corporations, or October 15 with a Form 7004 extension. The requirement only ends when the corporation is formally dissolved and a final return is filed.
How Do I Handle Form 1120 if My Delaware Corp Changed Structure Mid-Year?
A mid-year change usually splits your year into two short tax years, and each period is reported on the form that matches its structure. For example, if an LLC elects corporate taxation or an S corp election takes effect mid-year, the C corp period is filed on Form 1120 and the other period on Form 1065, Form 1120-S, or the owner's return. The exact treatment depends on the type of change and its effective date, so it's important to confirm this before filing.

