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South Carolina Business Tax Extension Filing Requirements
Businesses in South Carolina generally receive a 6-month automatic extension if they have filed IRS Form 7004 for the current tax year and it has been accepted. If the business did not file a federal extension or if the federal extension was rejected, the business must file a separate state extension using Form SC1120-T and Form SC8736 to request a South Carolina tax extension. The extension applies only to the tax return, not to the tax due.
| Business Classification | Tax Form | Due Date | Extension Form | Extension Period |
|---|---|---|---|---|
| C Corporations (including LLCs taxed as corporations) | Form SC1120 |
15th day of the 4th month after the tax
year ends (April 15 for calendar-year filers) |
Form SC1120-T (or) Form 7004 if no tax due. | 6 months automatic extension |
| S Corporations (including LLCs taxed as S corporations) | Form SC1120S |
15th day of the 3rd month after the tax
year ends (March 15 for calendar-year filers) |
Form SC1120-T (or) Form 7004 if no tax due. | 6 months automatic extension |
| Partnerships (including LLCs taxed as Partnerships) | Form SC1065 |
15th day of the 3rd month after the tax year end (March 15 for calendar-year filers) |
Form SC8736 (or) Form 7004 if no tax due. | 6 months automatic extension |
| Fiduciary | Form SC1041 |
15th day of the 4th month after the tax year end (April 15 for calendar-year filers) |
Form SC8736 (or) Form 7004 if no tax due. | 5 1/2 months automatic extension |
Information Required to File South Carolina Extension Forms SC1120-T & SC8736
Review the key details required to accurately complete and submit your South Carolina Forms SC1120-T & SC8736 extension on time.
Basic Information
Provide the legal details of the business requesting the extension. This includes:
- Legal business name
- Employer Identification Number (EIN)
- Name and address of corporation
- Filing period (Tax Year Begin and End dates)
Basic Information
Provide the legal details of the business requesting the extension. This includes:
- Name of the fiduciary or partnership
- FEIN or SSN (as applicable)
- Tax year ending date
- Payment amount
How to File South Carolina Tax Extension Form SC1120-T and SC8736
Discover how to quickly e-file or paper-file South Carolina Forms SC1120-T and SC8736 to get extra time to submit your corporate income or franchise tax return.
E-filing
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1
Access the Portal
Log in to the South Carolina Department of Revenue website.
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2
Locate Forms SC1120-T or SC8736
Select the correct extension form based on your entity type.
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3
Enter Business Information
Provide your FEIN, business name, mailing address, and tax year-end date.
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4
Calculate Tentative Tax
Enter the tentative tax due and any estimated payments already made.
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5
Submit and Pay
If tax is due, ensure payment is made on or before the original return due date to avoid penalties and interest.
Paper Filing
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1
Download the Form
Download South Carolina Forms SC1120-T or SC8736 from the South Carolina Department of Revenue website.
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2
Complete the Form
Enter the business FEIN, name, address, and estimated tax amount.
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3
Calculate Payment
Check if any tax is due. The extension is valid only if the estimated tax is calculated and paid.
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4
Mail the Form
Send the completed form and payment to:
Form SC1120-T Mailing Address:
SCDOR, Corporate Voucher
PO Box 100153
Columbia, SC 29202Form SC8736 Mailing Address:
SCDOR, Taxable Extension
PO Box 125
Columbia, SC 29214-0036
Frequently Asked Questions
When is the deadline to file South Carolina business tax returns SC1120, SC1120S, SC1065 & SC1041 with the state of South Carolina?
South Carolina business tax return deadlines generally follow federal due dates and are based on the entity type and tax year.
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South Carolina Corporation Income Tax Return (Form SC1120):
Due by the 15th day of the fourth month after the end of the taxable year. For calendar-year corporations, the due date is April 15.
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South Carolina S Corporation Income Tax Return (Form SC1120S):
Due by the 15th day of the third month after the end of the tax year. For calendar-year S corporations, the due date is March 15.
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South Carolina Partnership Return (Form SC1065):
Due by the 15th day of the third month following the close of the taxable year. Calendar-year partnerships must file by March 15.
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South Carolina Fiduciary Income Tax Return (Form SC1041):
Due by the 15th day of the fourth month after the end of the tax year. For calendar-year fiduciaries, the due date is April 15.
Businesses may face significant penalties and interest if they fail to file or pay their South Carolina business income tax returns on time.
What are the penalties for filing South Carolina business tax returns SC1120, SC1120S, SC1065, and SC1041 late?
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Late Filing Penalty:
A penalty of 5% of the unpaid tax per month or part of a month, up to 25%, applies if the return is filed late. An additional $500 penalty may apply
for noncompliance. -
Late Payment Penalty:
A 0.5% penalty per month or part of a month, up to 25%, is charged on unpaid taxes not paid by the due date.
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Interest:
Interest accrues on any unpaid tax from the original due date until paid, based on the rate set under IRC Sections 6621 and 6622.
To avoid penalties, businesses should file the extension and pay any estimated tax due by the original return deadline.
How to Extend the Deadline for South Carolina business tax returns SC1120, SC1120S, SC1065, and SC1041?
South Carolina businesses can request additional time to file their tax returns using the appropriate extension form:
South Carolina Form SC1120-T – Application for Automatic Extension of Time to File a Corporate Tax Return
C corporations and S corporations (Forms SC1120 and SC1120S) may receive an extension of up to 6 months from the original due date.
South Carolina Form SC8736 – Application for Extension of Time to File Fiduciary and Partnership Returns
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Partnerships (Form SC1065) may receive an extension of up to 5½ months from the original due date.
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Fiduciaries (Form SC1041) may receive an extension of up to 6 months from the original due date.
An extension to file does not extend the time to pay any tax due. Payments must be made by the original due date to avoid penalties and interest.
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