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Filing MD Business Taxes Accurately Starts with Knowing More
Get insights into Maryland business tax requirements to stay compliant and avoid penalties.
Maryland offers a competitive business tax environment with an 8.25% corporate income tax rate. The state provides various tax credits and incentives, attracting businesses from diverse industries. Maryland fosters economic growth and innovation, making it a thriving hub for both entrepreneurs and established companies.
Maryland Business Tax Forms
Know MD Business Tax Forms, which required for your business to stay compliant with Maryland regulations and avoid penalties.
Corporations
- Form 1120 (C Corporation Income Tax Return)
- Form 1120S (S Corporation Income Tax Return)
- Form 500: Report income and calculate taxes for corporations.
- Form 500D: Make quarterly estimated payments for corporate income taxes.
- Form 500A: Adjust taxable income for certain expenses.
- Form 500CR: Claim tax credits for your business.
- Form 500E: Request an extension for filing corporate income tax.
- Form 500UP: Report underpayment of estimated taxes.
- Form EL101B/EL102B: E-file corporate taxes securely.
Partnerships
- Form 1065: (Partnership Income Tax Return)
- Form 510: File taxes for S-Corporations or partnerships as pass-through entities.
Estates and Trusts
- Form 504: Report income for estates or trusts.
LLCs
- Form 1065: LLCs (multi-member LLCs filing as Partnerships)
- Form 1: Maintain good standing with an annual report for corporations and LLCs.
How to file MD Business Tax online with X.TAX
File Your Maryland Business Tax Filing in Just 4 Steps
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.
Maryland Business Tax Filing Deadlines
Stay Ahead of MD Biz Tax Filing Deadlines
| Business Type | Form | Due Date | Extension Deadline |
|---|---|---|---|
| Corporations | Form 1120: C Corporation Income Tax Return | April 15, 2025 | October 15, 2025 (automatic six-month extension) |
| Form 1120S: S Corporation Income Tax Return | March 17, 2025 | September 15, 2025 (automatic six-month extension) | |
| Form 500: Corporation Income Tax Return | April 15, 2025 | October 15, 2025 | |
| Form 500D: Declaration of Estimated Corporation Income Tax | Quarterly:
|
N/A | |
| Form 500A: Calculation of Corporation Modified Income | April 15, 2025 (filed with Form 500) | N/A | |
| Form 500CR: Business Tax Credits Form | April 15, 2025 (filed with Form 500) | N/A | |
| Form 500E: Application for Extension of Time to File Corporation Income Tax Return | April 15, 2025 (grants an extension to October 15, 2025) | N/A | |
| Form 500UP: Underpayment of Estimated Income Tax by Corporations | April 15, 2025 (filed with annual return) | N/A | |
| Form EL101B/EL102B: Maryland Income Tax Declaration for Corporate Electronic Filing | April 15, 2025 | N/A | |
| Form 510: Maryland Pass-Through Entity Income Tax Return | March 17, 2025 (for S-Corporations) | N/A | |
| Partnerships | Form 1065: Partnership Income Tax Return | March 17, 2025 | September 15, 2025 (automatic six-month extension) |
| Form 510: Maryland Pass-Through Entity Income Tax Return | March 17, 2025 | N/A | |
| Estates and Trusts | Form 504: Maryland Estate Income Tax Return | April 15, 2025 | N/A |
| LLCs | Form 1: Annual Report for Corporations and LLCs | April 15, 2025 | |
| LLCs (Multi-Member LLCs filing as Partnerships) use Form 1065 | March 17, 2025 | ||
| Sales and Use Tax | Sales and Use Tax License Application | Upon application | N/A |
| Withholding Tax Forms | Form MW506: Employer's Withholding Return | Monthly: Last day of the month following the reporting period Quarterly: Last day of the month following the quarter |
Maryland Business Tax Exemptions
Save More with Your MD Tax Exemptions
Sales and Use Tax Exemptions
Business Tax Credits
Property Tax Exemptions
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QuickBooks Integration
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Why MD Businesses Rely on X.TAX
Trusted by companies across Wisconsin for efficient tax filing.
Maryland Business Tax FAQs
Your Questions, Answered
What’s the best e-filing software for Maryland business taxes?
X.TAX is the leading choice for Maryland businesses. It ensures compliance, accuracy, and seamless online filing with features like audit protection and real-time monitoring.
What forms do I need to file?
The forms you need depend on your business type, such as corporations, partnerships, or trusts. X.TAX handles all necessary filings to keep you compliant with Maryland regulations.
What are the key deadlines for Maryland business taxes?
Deadlines vary based on the form and filing type. X.TAX helps you track all important dates, so you never miss a deadline.
Are there any exemptions or credits available?
Yes, Maryland offers various exemptions and tax credits for businesses, including relief for nonprofits and small businesses. X.TAX helps identify and claim the exemptions you qualify for.
How does X.TAX assist with audits?
Our Audit Protect feature provides full support for managing IRS or state audits, offering proactive alerts and expert guidance to address potential issues.
