Customer Service FAQ

​​Please be advised that effective 3/16/2020, The State Center Complex will be closed to the public until further notice. Additionally, Maryland Local Assessment Offices are closed to the public but staff will be on hand to answer questions via phone and email. Please click the following link to contact your local office.​

What is the Department's Customer Service Policy?


​While the Department of Assessments & Taxation follows Governor Hogan's Customer Service Promise, our staff also adheres to a Customer Service Policy.  

The name of my business is spelled incorrectly, how can I fix it?


Contact our Charter Department at​

I want to change my principal residence address, how do I do that?

  • ​​If the wrong mailing address appears on your real property assessment notice or real estate tax bill, or you would like to change the address to which your tax bills, assessment notices, and other correspondences are sent, please mail a letter to the assessment office for the jurisdiction in which the property is located.

How do I bring my business into good standing?

Can I register my business online?


Yes, through the Maryland Business Express, you can establish tax accounts, file your business personal property returns, ​register your trade name, and order copies of previously filed documents. 

Maryland Business Express​

Where can I find my Department ID number?


Perform a business entity search by name on Maryland Business Express- this will provide you with your Department ID Number and more information about your business.

Can I give you a name, and you tell me what property they own?


Mandated by State Law, we are unable to provide this information online.

How do I order a certificate of status?


You may order a certificate by contacting the Corporate Charter unit or visiting the Maryland Business Express site at​

Can you explain my property valuation?


Contact your local assessment office; a list of offices is available online at

The link I visited on your website is broken, who can I tell to fix it?

How can I appeal my property tax assessment?


For more information, contact your local assessment office,​

I have read the FAQ list and I am still unsure who to contact.


You will get the fastest service by using our frequent contact list:

​ If you still are unsure where to go email: and we will help get you to the right place.​

Human Trafficking GET HELP

National Human Trafficking Hotline - 24/7 Confidential

1-888-373-7888 233733 More Information on human trafficking in Maryland

Customer Service Promise

The State of Maryland pledges to provide constituents, businesses, customers, and stakeholders with friendly and courteous, timely and responsive, accurate and consistent, accessible and convenient, and truthful and transparent services.

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Help Stop Fraud in State Government

The Maryland General Assembly’s Office of Legislative Audits operates a toll-free fraud hotline to receive allegations of fraud and/or abuse of State government resources. Information reported to the hotline in the past has helped to eliminate certain fraudulent activities and protect State resources.

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