CD-405: C-Corporation Tax Return (2025)
North Carolina · North Carolina DOR · Used for tax years 2025
Form CD-405 is North Carolina’s 2025 C-Corporation Tax Return. It reports net worth for franchise tax, taxable income for corporate income tax, payments and credits, and the resulting tax due or refund.
Who files this form
Form CD-405 is North Carolina’s C-Corporation Tax Return for tax year 2025. It includes calculations for franchise tax and corporate income tax.
The form does not provide complete rules for deciding which corporations must file. It labels combined returns as being for approved taxpayers only.
When it's due
For tax year 2025, the form states that returns are due by the 15th day of the 4th month after the end of the income year.
What you'll need
Have the corporation’s legal name, address, federal employer ID number, NAICS code, Secretary of State ID, and financial information available.
The form calls for these documents or schedules when applicable:
- Federal income tax return: Attach a copy or complete Schedule G.
- Form CD-425: Required if claiming tax credits on Line 4 or Line 24e.
- Form D-403 NC K-1: Attach a copy if claiming a partnership payment on Line 24c.
- Form 1099 or W-2: Include a copy for nonresident withholding on Line 24d.
- State net loss schedule: Attach for Schedule B, Line 19.
- Net worth supporting schedules: Attach schedules for accumulated depreciation, depletion, and amortization, and for affiliated indebtedness reported in Schedule C.
- Special apportionment calculation: Attach a supporting schedule if using a special apportionment formula.
Other entries also call for supporting schedules or explanations, as marked on the form.
How to file
Complete the applicable return entries and schedules. All taxpayers must complete Schedule F. Use capital letters for the corporation’s name and address.
The return includes spaces for an officer’s signature, title, and date, and for a paid preparer’s signature and information when applicable.
Mail the original return to:
N.C. Dept. of Revenue
P.O. Box 25000
Raleigh, N.C. 27640-0500
The form says you may pay tax online, but refers to instructions for details. No e-file directions are provided in the supplied text. Payments must be in U.S. currency from a domestic bank.
Common mistakes
- Using the wrong ink or marks: For handwritten forms, use blue or black ink, not red. Do not use dollar signs, commas, or other punctuation marks.
- Using the wrong print settings: Set page scaling to “none,” uncheck Auto-Rotate and Center, and do not print on both sides.
- Sending photocopies: Submit originals only. Do not include the handwritten-form instruction page or mix form types.
- Leaving out required credit attachments: Form CD-425 must accompany credits on Line 4 or Line 24e. A copy of Form D-403 NC K-1 must accompany a partnership payment on Line 24c.
- Using too few decimal places: Apportionment factors must be calculated to four places to the right of the decimal.
Questions people ask
Do I have to attach my federal income tax return?
If you do not attach a copy, complete Schedule G, Federal Taxable Income Before NOL Deduction.
What corporate income tax rate appears on the 2025 form?
Schedule B, Line 23 directs you to multiply net taxable income on Line 22 by 2.25%.
Can I apply an overpayment to next year’s estimated income tax?
Yes. Line 35 lets you apply an amount from the overpayment on Line 34 to 2026 estimated income tax.
Where do I explain changes on an amended return?
Use Schedule J, Explanation of Changes for Amended Return. Attach additional sheets if necessary.