​​​The Maryland​​​ Department of Assessmen​​​ts and Taxation (also known as the S​tate Department of Assessments and Taxation, or SDAT)​ is a customer-focused agency that works to ens​ure property is​ accurately​ assessed, business records are appropriately maintained, and necessary tax-related information is conveyed to state agencies and local jurisdictions. The Department's responsibilities can generally be split into three​​​ main areas: Business Services, Real Prope​rty Valuation and Property Tax Credits. 

The Business Services Division is comprised of the Business Charter Unit and Business Property Valuation Unit. The Business Charter Unit helps create businesses and ensures that the documents they file meet the requirements of Maryland law. The Business Property V​aluation Unit values items that businesses own, lease, or use in order to operate and are subject to taxation by local jurisdictions.

The Real Property Valuation (Assess​ments) Division values more than two million residential and commercial property accounts throughout the state. Those values are then certified to local governments, which use the assessments to collect property ​taxes. The Department is committed to ensuring uniform and accurate assessments statewide, as well as providing a fair and prompt appeal process.​

The Taxation Division includes the Property Tax Credit Unit and the State Tax Sale Ombudsman's Office. The Property Tax Credit Unit helps administer the Maryland Property Tax Credit Programs, including the Homeowners'​ Tax Credit, the Renters'​ Tax Credit, and the Homestead Tax Credit.​ The Office of the Maryland State Tax Sale Ombudsman helps homeowners understand the tax sale process and navigate the tax sale system, connecting them to housing and financial counseling, legal services, and other benefits programs.

​​​Business Services
Real Property
Tax Credits
​Business Services​
​Real Property Valuation
Property ​Tax Credits

Important 2024 Real Property Assessment Information​

If you received an assessment notice and feel the Total New Market Value on your notice does not reflect the market value of your property, you may use this ​form to file an appeal.

Please be advised of the new and improved format​ of the 2024-25 assessment notices.​

2024 Extension Requests

2024 Extension Request​

If you need additional time to complete your Annual Report and Personal Property Tax Return(s), you may get a 2 month filing extension provided you request the extension by April 15th. To file an extension request, please click here​​. If April 15th falls on a Saturday, Sunday, or Maryland legal holiday as defined by §1.111 of the General Provisions Article, the deadline to file the extension request using this website will be the next succeeding day that is not a Saturday,Sunday, or Maryland legal holiday. *Please note that* April 15th is a Monday this year.


2023 SDAT Domestic Forfeitures

Attention Business Services Customers:  
​Please note that SDAT is not currently taking walk-in appointments.  
Online filings on Ma​ryland Business Express are quick, easy ​and​ highly  encouraged:

Contact Us

Customers with questions regarding their business, real or personal property asse​ssment, or tax credit are strongly encouraged to contact the Department using the contact information below.

Business Services
Real Property Valuation Services
Property Tax Credit Services
Sign Up for Important Email Notices - All entities must submit an Annual Report and Personal Property Tax Return every year to remain in "good standing" and legally operate in Maryland. Homeowners' and Renters' Tax Credit applications must be submitted every year. Be sure to sign up here to receive general updates from our Department and timely annual reminders to file these important documents!​​​

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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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