2026 Property Tax Due Dates
July 1
Full or first half due
December 1
Second half (if semi-annual)
Payment Methods
Online, Mail, In-Person
Charles County Treasurer
Phone
(301) 645-0685How to Pay
Online
Pay using credit card or e-check
By Mail
Mail check payable to Charles County Treasurer
In Person
Visit the Treasurer's office
About Property Taxes in Maryland
Maryland property taxes are levied by both the state and local governments (counties and municipalities). Property is assessed at full cash value (100% of market value) by the State Department of Assessments and Taxation (SDAT). Counties then apply their own tax rates to that value. Maryland conducts reassessments on a three-year rolling cycle — approximately one-third of all properties are reassessed each year. When a property is reassessed and value increases significantly, Maryland phases in the increase over three years to reduce the impact on property owners. This phased-in value (rather than the full assessed value) is what your tax bill is based on.
Payment & Assessment
Maryland property tax bills are typically mailed in July, covering the fiscal year from July 1 to June 30. Payment schedules vary by county: Most counties: Due September 30 (full year) or semi-annual installments (September 30 and December 31, or other dates). Some counties offer a 30-day grace period. Late interest of 1% per month typically applies. Most counties offer online payment through the county government website. Contact your county finance department for payment options.
Statewide framework for Maryland. Your county's specific rates and deadlines are shown above.
Other Counties in Maryland
About Charles County
Charles County is a county located in the U.S. state of Maryland. As of the 2020 United States census, the population was 166,617. The county seat is La Plata. The county was named for Charles Calvert (1637–1715), third Baron Baltimore. The county is part of the Southern Maryland region of the state. With a median household income of $103,678, Charles County is the 39th-wealthiest county in the United States as of 2020, and the highest-income county in the United States with a Black-majority population.
Source: Wikipedia — content available under CC BY-SA 4.0
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Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.