File Your Missouri Business Taxes Online with Confidence
X.TAX provides expert Business tax solutions for filing all your MO business tax forms, 100% accuracy, Audit Protect and Assist Filing.

Understand Missouri Business Taxes Better
Stay informed with essential MO biz tax insights.
Missouri offers a competitive 4% corporate income tax rate, attracting businesses with its favorable tax environment. The state provides various tax credits and incentives, such as the Missouri Works Program and the Low-Income Housing Tax Credit. This supportive landscape fosters economic growth and innovation, making Missouri a thriving hub for diverse businesses.
Missouri Business Tax Forms
Know MO Business Tax Forms, which required for your business to stay compliant with South Dacota’s regulations and avoid penalties.
Corporations
- Form MO-1120: Corporation Income Tax Return
- Form MO-1120ES: Estimated Income Tax Payment Voucher for Corporations
- Form MO-7004: Application for Extension of Time to File Corporation Income Tax Return
- Form MO-1120S: S-Corporation Income Tax Return
- Form MO-1NR: Nonresident Shareholder's Income Tax Return (for S-Corporations)
Partnerships
- Form MO-1065: Partnership Return
- Form MO-3NR: Nonresident Shareholder Composite Return
Withholding Tax Forms
- Form MO-941: Employer's Return of Income Taxes Withheld
- Form MO W-3: Transmittal of Wage and Tax Statements
Sales and Use Tax Forms
- Form ST-1: Sales Tax License Application
- Form ST-2: Sales Tax Exemption Certificate
- Form ST-3: Direct Pay Permit Application
- Form ST-8: Sales and Use Tax Return
Earnings Tax Forms (City of St. Louis)
- Form E-234: Business Earnings Tax Return
- Form E-11: Voluntary Payment Voucher for Earnings Tax
- Form E-5: Notice to Cancel Earnings Tax Account
- Form E-6: Informational Disbursement Report (for Not-for-Profit organizations)
- Form E-8: Extension Request for Business Earnings Tax Return
Estate and Trust Forms
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While Missouri 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.
How to file MO Business Tax online with X.TAX
File Your Missouri Biz Taxes the easiest way.
Create an Account
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Upload Your Information
Enter your income, expenses, and tax forms.
Review for Errors
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Submit to the State
File with one click and track your submission.
Missouri Business Tax Deadlines
Don’t Miss Your MO Biz Tax Filing Due Dates
Business Type | Forms | Due Date |
---|---|---|
Corporations | MO-1120: Corporation Income Tax Return | April 15, 2025 |
MO-1120ES: Estimated Income Tax Payment Voucher | Due quarterly; specific dates depend on the fiscal year | |
MO-7004: Application for Extension of Time to File | April 15, 2025 (Extension until October 15, 2026) | |
MO-1120S: S-Corporation Income Tax Return | April 15, 2025 | |
MO-1NR: Nonresident Shareholder's Income Tax Return | April 15, 2025 | |
Partnership | MO-1065: Partnership Return | April 15, 2025 |
MO-3NR: Nonresident Shareholder Composite Return | April 15, 2025 | |
Withholding Tax Forms | MO-941: Employer's Return of Income Taxes Withheld | Due quarterly; January 31, April 30, July 31, October 31 |
MO W-3: Transmittal of Wage and Tax Statements | January 31, 2025 | |
Sales and Use Tax Forms | ST-1: Sales Tax License Application | No specific deadline; must be filed before collecting sales tax |
ST-2: Sales Tax Exemption Certificate | No specific deadline; used at the time of purchase | |
ST-3: Direct Pay Permit Application | No specific deadline; must be filed before making direct pay purchases | |
ST-8: Sales and Use Tax Return | Due on the last day of the month following the reporting period | |
Earnings Tax Forms (City of St. Louis) | E-234: Business Earnings Tax Return | April 15, 2025 |
E-11: Voluntary Payment Voucher for Earnings Tax | Due with the return or as needed | |
E-5: Notice to Cancel Earnings Tax Account | No specific deadline; submitted when needed | |
E-6: Informational Disbursement Report (for Not-for-Profit organizations) | Due with annual filings | |
E-8: Extension Request for Business Earnings Tax Return | April 15, 2025 (Extension until October 15) | |
Estate and Trust Forms | 1041: U.S. Income Tax Return for Estates and Trusts | April 15, 2025 (for calendar-year estates) |
Missouri Business Tax Exemptions
Save More with These MO Biz Tax Exemptions
Sales and Use Tax Exemptions
Incentives for Specific Industries
Property Tax Exemptions
X.TAX is simplifying Your Missouri Business Tax Filing Online
Accurate, Easy, and Built for Your Missouri Biz Tax Filings
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AItomatic Filings
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QuickBooks Integration
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Why Missouri Businesses loves X.TAX
What Our Customers Are Saying
X.TAX made filing my Missouri business taxes a breeze. The process was so simple and stress-free!
John T
Their audit protection gave me peace of mind, and the QuickBooks integration saved me hours of work.
Sarah L
Thanks to X.TAX, I discovered tax exemptions that saved my business thousands!
David P
Deadlines used to overwhelm me. Now I rely on X.TAX to keep everything organized and filed on time.
Emily K
From start to finish, the platform was intuitive and fast. I highly recommend it!
Michael R
The AItomatic Filing feature was worth every penny. I didn’t have to worry about a thing!
Jessica M
Your Missouri Businesses TAX FAQs
Find clear answers to common questions about MO biz tax filings.
What makes X.TAX the best eFiling software for Missouri businesses?
X.TAX offers 100% accuracy, audit protection, and seamless filing for all required Missouri business tax forms. Plus, our intuitive platform saves you time and stress.
How do I know which tax forms my Missouri business needs?
We provide all necessary forms for corporations, partnerships, and more. Our platform guides you to ensure compliance. For details, visit our website.
What are the deadlines for Missouri business tax filings?
Key deadlines include April 15 for income tax returns and January 31 for withholding tax forms. Don’t worry—X.TAX keeps you on track with deadline reminders.
Are there exemptions that can save my business money?
Yes! Missouri offers sales, property, and industry-specific tax exemptions. We help you identify and apply for the ones you qualify for.
What happens if I miss a filing deadline?
Late filings can result in penalties. X.TAX helps prevent this with automatic alerts and filing extensions.
Is my information secure with X.TAX?
Absolutely. X.TAX uses advanced encryption to protect your data and offers secure submission directly to the state.
Can I file on my own, or do I need a CPA?
With X.TAX, you can file confidently on your own or let our certified CPAs handle it for you with AItomatic Filing.