File returns, make payments, check refund status, and manage your account, all in one place. Creating a new account is the best way to track your filing history, view notices, and manage your account over time. For more information, please visit our Maryland Tax Connect Information Hub.
Simplify Your Maryland Business Taxes
Access everything you need to stay compliant and simplify your business tax responsibilities.
Business Tax Information
The Comptroller's Office is dedicated to making the process of filing and paying taxes, simple, safe, and efficient.
Tax Guidance for Businesses
Find the guidance you need to meet your tax and reporting obligations.
Maryland Tax Connect Help
Get the help you need navigating our tax processing system, Maryland Tax Connect.
Pay PTE Estimated Taxes
It is very simple to pay your estimated Pass-Through Entity (PTE) estimated taxes online.
Report Unclaimed Property
Comply with state regulations by reporting any unclaimed property held by your business.
File Your Taxes
Select the appropriate filing method to meet Maryland's requirements for timely and accurate business tax submissions.
File Online Today
Carryout all your business tax filing needs at Maryland Tax Connect.
Pass-Through Entity
Are you filing as a Pass-Through Entity? Learn More.
Frequently Asked Questions
Find the answers to the most common questions for business tax filers.
Payments and Refunds
Guidance on making payments, tracking refunds, and resolving payment-related issues for your business.
Tips & Resources
Filing Resources
Utilize these tools, forms, and resources to facilitate accurate and compliant business tax filings for the current tax year.
Tax Forms and Instructions
Access all necessary tax forms and comprehensive filing instructions for Maryland business taxes.
Sales and Use Tax
Stay current with all your SUT filings and payments, and discover answers to you most asked questions.
Alcohol Taxes
Find all of your alcohol tax filing and reporting needs in one place.
Tax Support Services
Discover the various support mechanisms the Comptroller of Maryland has in place to assist business taxpayers with their tax filing and obligations.
Get Help from an Agent
Visit our MyCOMConnect customer service portal for questions and assistance.
Motor Fuel Tax Resources
Discover information needed to meet your Motor Fuel filing and reporting obligations.
Tax Alerts & Technical Bulletins
Stay informed and up to date with the latest tax guidance from the Comptroller's Office.
What's New for the 2026 Filing Season
Discover everything you need to know before you file your tax year 2025 returns.
Do you have special situation?
Understand the circumstances where Sales and Use Tax should be charged when it is not a material sale.
Business Tax Credit Opportunities
Find out more about tax credits for businesses, and how and when to claim them.