File Your South Dakota Business Taxes Online with Confidence
X.TAX provides expert Business tax solutions for filing all your SD business tax forms, 100% accuracy, Audit Protect and Assist Filing.
Understand South Dakota Business Taxes Better
Stay informed with essential SD biz tax insights.
South Dakota stands out with no corporate income tax, creating an attractive environment for businesses. The state offers various tax incentives, including no personal income tax, no inventory tax, and low sales tax. This favorable tax landscape fosters economic growth and innovation, making South Dakota a prime location for businesses of all sizes.
South Dakota Business Tax Forms
Know SD Business Tax Forms, which required for your business to stay compliant with South Dacota’s regulations and avoid penalties.
Corporations
- IRS Form 2553: Election by a Small Business Corporation (to elect S-Corp status).
- Form 1120 (C Corporation Income Tax Return)
- Form 1120S (S Corporation Income Tax Return)
- Form 500: Corporation Income Tax Return
- Form 500EZ: Short Form for eligible corporations with simple tax situations
- Form 500ES: Estimated Income Tax Payment for Corporations
- Form 500CP: Extension Payment for Corporations
Partnerships
- Form 1065 (Partnership Income Tax Return)
- Form 502: Pass-Through Entity Return (for S Corporations and partnerships)
Estate and Trusts
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Although South Dakota does not impose an estate tax, estates may need to file federal forms such as:
Form 1041: U.S. Income Tax Return for Estates and Trusts.
LLCs
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Multi-member LLCs typically file:
Form 1065 (Partnership Income Tax Return)
Sales and Use
- Form ST-1: Sales Tax License Application
- Form ST-3: Sales Tax Exemption Certificate
- Form ST-4: Direct Pay Permit Application
- Form ST-8: Sales and Use Tax Return
How to file SD Business Tax online with X.TAX
File Your South Dakota Biz Taxes the easiest way.
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.
South Dakota Business Tax Deadlines
Don’t Miss Your SD Biz Tax Filing Due Dates
| Business Type | Form | Due Date | Extension Deadline |
|---|---|---|---|
| Corporations | Form 1120 (C Corporation Income Tax Return) | April 15, 2025 | October 15, 2025 (if an extension is filed) |
| Form 1120S (S Corporation Income Tax Return) | March 17, 2025 | September 15, 2025 (if an extension is filed) | |
| Form 500: Corporation Income Tax Return | April 15, 2025 | October 15, 2025 | |
| Form 500EZ: Short Form for eligible corporations with simple tax situations | April 15, 2025 | October 15, 2025 | |
| Form 500ES: Estimated Income Tax Payment for Corporations | Payments due on same date as corporate income tax return | N/A | |
| Form 500CP: Extension Payment for Corporations | April 15, 2025 (payment due to avoid penalties) | N/A | |
| Partnerships | Form 1065 (Partnership Income Tax Return) | March 17, 2025 | September 15, 2025 (if an extension is filed) |
| Form 502: Pass-Through Entity Return (for S Corporations and partnerships) | March 17, 2025 | September 15, 2025 (if an extension is filed) | |
| Estate and Trust Forms | Form 1041: U.S. Income Tax Return for Estates and Trusts | April 15, 2025 (for calendar year estates and trusts) | October 15, 2025 (if an extension is filed) |
| Form 770: South Dakota Fiduciary Income Tax Return | May 1, 2025 | N/A | |
| Sales and Use Tax Forms | Form ST-1: Sales Tax License Application | Due upon application for a sales tax license | N/A |
| Form ST-3: Sales Tax Exemption Certificate | Used at the time of purchase; no specific due date | N/A | |
| Form ST-4: Direct Pay Permit Application | Due upon application; no specific due date | N/A | |
| Form ST-8: Sales and Use Tax Return | Due on the 20th of the month following the reporting period (e.g., January return due February 20, 2025) | N/A | |
| LLCs | Form 1065 (Partnership Income Tax Return) | March 17, 2025 | September 15, 2025 (if an extension is filed) |
South Dakota Business Tax Exemptions
Save More with These SD Biz Tax Exemptions
Sales and Use Tax Exemptions
Corporate Income Tax Exemption
Property Tax Exemptions
Incentives for Specific Industries
Additional Exemptions
Application Process
X.TAX is simplifying Your SD Business Tax Filing Online
Accurate, Easy, and Built for Your SD Biz Tax Filings
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RiskScore
- Track your IRS account status in real time.
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AItomatic Filings
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QuickBooks Integration
- Import financial data directly for faster, error-free filings.
Why South Dakota Businesses loves X.TAX
Hear from our Customers
South Dakota Businesses TAX FAQs
Everything You Need to Know About SD Tax Filings with X.TAX
What is the best eFiling software for South Dakota business taxes?
X.TAX is the top choice for South Dakota businesses. It offers user-friendly tools, 100% accuracy, and features like Audit Protect and Assist Filing to simplify your tax process.
What forms do I need to file for South Dakota business taxes?
We provide all the necessary forms to meet South Dakota tax requirements, including federal forms like Form 2553 for corporations and Form 1065 for partnerships. For a full list, refer to the “About Forms” section above or visit our website.
When are South Dakota business tax deadlines?
Deadlines vary based on the type of tax or form. For example, partnership returns are due by March 15, while sales and use tax returns are typically due on the 20th of the month following the reporting period. See the “Forms Deadline” section for more details.
Are there any tax exemptions for South Dakota businesses?
Yes, South Dakota offers several exemptions, including sales tax exemptions for nonprofits and manufacturing equipment, and there is no corporate income tax. Explore the “Save More with Exemptions” section above for a comprehensive guide.
How does X.TAX help me stay compliant with SD tax regulations?
X.TAX provides tools to ensure compliance, such as real-time error checks, audit protection, and deadline reminders. We also support QuickBooks integration to keep your financial data in order.
Can X.TAX handle federal and state filings for my South Dakota business?
Absolutely. Our platform covers both state and federal filings, ensuring your business stays compliant on all levels.
What if I need help with an audit?
Our Audit Protect service is here for you. We’ll guide you through the process, resolve potential issues, and provide full support for IRS or state audits.
