Maryland · County guide
Charles County, Maryland property tax appeals
A Charles County property tax appeal starts with the Charles County Supervisor of Assessments (State Department of Assessments and Taxation), then the Charles County Property Tax Assessment Appeal Board. This season's deadline has not been announced yet. Our forecast for the Charles County Supervisor of Assessments (State Department of Assessments and Taxation): Dec 31, 2026 – Jan 4, 2027 (not an official date). There is no filing fee.
This season
- Next deadline
- Expected Dec 31, 2026 – Jan 4, 2027
- Forecast, not an official date
- Charles County Supervisor of Assessments (State Department of Assessments and Taxation)
- Source: Maryland Code, Tax - Property § 14-503 (Maryland General Assembly)Last checked
Check a Charles County home for free
Here the check uses your own figures: you enter the assessed value from your notice or tax bill and the year you bought. We compare how much it has grown with the house price index for your area and show the numbers as your figures. You decide and file yourself.
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- Filing fee
- No filing fee
- Where to file first
- Charles County Supervisor of Assessments (State Department of Assessments and Taxation)
- Office address
- Southern Maryland Trade Center 101 Catalpa Drive - Suite 101A La Plata, Maryland 20646 · (301) 932-2440
- Our coverage
- Free check available
- Independent guide — not affiliated with Charles County or any government agency.
- Last updated
- October 1, 2026
- Sources last checked
- October 1, 2026
- Status
- Verified guide
What are the Charles County reassessment results, tax rates and caps?
How much did Charles County reassessments change values?
| Reassessment | Area | Compared with | Residential | Commercial | All property | Homes that rose |
|---|---|---|---|---|---|---|
| January 1, 2026[1] | Area 2 | 2023 values | +12.7% | +9.3% | +12.5% | 15,578 of 16,195 (96.19%) |
| January 1, 2025[2] | Area 1 | 2022 values | +14.7% | +5% | +11.9% | — |
| January 1, 2024[3] | Area 3 | 2021 values | +28.3% | +7.5% | +26.2% | — |
What are the Charles County tax rates and caps?
- Assessment limitsCounty homestead credit cap (yearly limit on the taxable increase)
- Charles County's homestead credit cap for 2026-2027 tax bills is 7% a year (towns inside the county may set their own cap).[4]
- Property tax rateConstant yield
- SDAT certified a fiscal 2027 constant yield tax rate of $1.0931 per $100 for Charles County (outside the towns), against the fiscal 2026 rate of $1.1410; a rate above the constant yield rate requires advertising and a public hearing.[5]
- Property tax rateCounty rate
- For 2026-2027 the Charles County real property tax rate is $1.1410 per $100 of assessment, plus the State rate of $0.1120.[4]
When and where do I file a Charles County property tax appeal?
Who hears a Charles County appeal?
The stages in order. We are not affiliated with any of these offices.
- 1
- 2
Charles County Property Tax Assessment Appeal Board
Filing: appeal
Where is the Charles County office?
Charles County Supervisor of Assessments (State Department of Assessments and Taxation)[9]
Charles County Supervisor of Assessments (SDAT local assessment office)
- Address
- Southern Maryland Trade Center 101 Catalpa Drive - Suite 101A La Plata, Maryland 20646
- Phone
- (301) 932-2440
- Fax
- (301) 932-2189
- Hours
- 8:00 to 4:30
- Online
- Official website
Charles County Property Tax Assessment Appeal Board[10]
Charles County Property Tax Assessment Appeals Board
- Address
- Southern Maryland Trade Center, 101 Catalpa Drive, Suite 101A, La Plata, MD 20646
- Phone
- (301) 932-2448
Tax collector[8]
Office of the Treasurer, Charles County
- Address
- 200 Baltimore Street, P.O. Box 2607, La Plata, MD 20646
- Phone
- (301) 645-0685
We are not affiliated with this office. Hours can change, so call before you visit.
Has the Charles County property tax appeal deadline been announced?
- Upcoming
- Not announced yet
- Forecast
- Expected to close between December 31, 2026 and January 4, 2027
- Last checked
We will update this page when the new dates are posted.
Which Charles County filing windows are coming up?
| Closes | Area | Who hears it | Status |
|---|---|---|---|
| Expected Dec 31, 2026 – Jan 4, 2027 | Countywide | Charles County Supervisor of Assessments (State Department of Assessments and Taxation) · Official source · Last checked Sep 29, 2026 | Forecast, not an official date |
How do I file a property tax appeal in Charles County?
Charles County Property Tax Assessment Appeal Board: There is no fee to appeal to the Charles County Property Tax Assessment Appeal Board.
- Filing feeCharles County Property Tax Assessment Appeal Board
- There is no fee to appeal to the Charles County Property Tax Assessment Appeal Board.[6]
Which Maryland rules apply in Charles County?
These rules are the same in every Maryland county. Each link opens the rule on the Maryland page, where the Maryland-wide sources are listed.
What do Charles County property taxes and assessments look like?
Figures from public records and the Census, each with its source. They describe the county's homes as a group, not the value of any one home.
How much could a lower assessment save on Charles County property taxes?
Tax rate used: $1.253 per $100 of assessed value (county and State rates, fiscal 2026-27).
| Example | Tax saved |
|---|---|
| $10,000 less assessed value | $125 a year |
| 10% less on a home assessed at $428,500 (the Census median home value) | $537 a year |
These are examples: the tax rate times a lower assessed value. Exemptions, credits, caps and phase-ins can make the real change smaller. This is not a prediction for any home. Rate source: Tax Rates 2026-2027 - Tax Table & Homestead Credit Caps - July 2026 (SDAT PDF).
What do homeowners in Charles County pay in property tax?
The median owner-occupied home in Charles County was worth $428,500, and the median property tax its owners paid was $4,339 a year, according to the Census Bureau's American Community Survey.
- Median home value
- $428,500
- Margin of error ±$5,357.
- Median property tax paid per year
- $4,339
- Margin of error ±$100.
- Median tax as a share of median value
- 1.01%
- A ratio of two medians, not a tax rate. Your own bill depends on your assessment and local levies.
- Owner-occupied homes
- 49,958
- Margin of error ±916.
These are survey estimates of what owners reported about their own homes. They are not assessed values, not tax rates, and not an opinion of what any home is worth.
They cannot tell you whether your own assessment is fair. That takes a comparison with similar homes, which we offer only in counties we have researched.
Median home value: Charles County compared
- Charles County$428,500
- Typical Maryland county$380,550
- Typical US county$185,300
Charles County $428,500; Typical Maryland county $380,550; Typical US county $185,300
Median property tax paid: Charles County compared
- Charles County$4,339
- Typical Maryland county$3,389
- Typical US county$1,619
Charles County $4,339 a year; Typical Maryland county $3,389 a year; Typical US county $1,619 a year
How often is property reassessed in Charles County?
Charles County is split into three SDAT reassessment areas; Area 3 is next reassessed January 1, 2027, and each area is revalued every three years.
- Reassessment cycle
- Charles County is split into three SDAT reassessment areas; Area 3 is next reassessed January 1, 2027, and each area is revalued every three years.[7]
Homes in Charles County
From the Census Bureau's American Community Survey: how old the homes are, what kind they are, what owners say they are worth and the property taxes they pay. These figures describe all homes together, not any one home.
- Median year built
- 1991
- All housing units, owned and rented
- Single-family houses, detached or attached
- 90%
- of 63,813 housing units
- Owned homes with a mortgage or similar loan
- 81%
- of 49,958 owner-occupied homes
Home values reported by owners
- Less than $50,0004%
- $50,000 to $99,9991%
- $100,000 to $199,9992%
- $200,000 to $299,99910%
- $300,000 to $399,99926%
- $400,000 to $499,99927%
- $500,000 to $749,99925%
- $750,000 to $999,9994%
- $1,000,000 to $1,999,9991%
- $2,000,000 or more1%
Home values reported by owners in Charles County: Less than $50,000 4%; $50,000 to $99,999 1%; $100,000 to $199,999 2%; $200,000 to $299,999 10%; $300,000 to $399,999 26%; $400,000 to $499,999 27%; $500,000 to $749,999 25%; $750,000 to $999,999 4%; $1,000,000 to $1,999,999 1%; $2,000,000 or more 1%.
Property taxes owners pay a year
- No real estate taxes5%
- Less than $8003%
- $800 to $1,4994%
- $1,500 to $1,9993%
- $2,000 to $2,99913%
- $3,000 or more73%
Property taxes owners pay a year in Charles County: No real estate taxes 5%; Less than $800 3%; $800 to $1,499 4%; $1,500 to $1,999 3%; $2,000 to $2,999 13%; $3,000 or more 73%.
Source: U.S. Census Bureau, American Community Survey (2020–2024 5-year estimates, tables B25075, B25102, B25035, B25024 and B25081), retrieved Oct 1, 2026. Survey estimates have a margin of error.
More questions about Charles County property tax appeals
When is the Charles County property tax appeal deadline?
This season's deadline has not been announced yet. We expect it to close between December 31, 2026 and January 4, 2027. This is our forecast, not an official date. In Maryland, when you get a new assessment notice you can appeal it to the Supervisor of Assessments within 45 days of the date of the notice.[11][12]
Is there a fee to file a property tax appeal in Charles County?
There is no fee to appeal to the Charles County Property Tax Assessment Appeal Board.[6]
Where do I file my first property tax appeal in Charles County?
In Charles County, an assessment appeal is filed online with the control number on the notice, or on the paper form returned to the local SDAT assessment office, within 45 days of the notice date.[13]
Can my assessed value go up if I appeal in Charles County?
The same Maryland rule applies in every county. Read the Maryland rule
Which details are not confirmed yet?
We show a fact only after a person has checked it against the official source. These are still being checked. Until then, ask the Charles County Supervisor of Assessments (State Department of Assessments and Taxation):
- When a filing counts as on time
Property tax guides for Charles County homeowners
- SDAT Real Property Search: Find Your Maryland AssessmentMaryland · Charles County
- How to Read Your Property Assessment NoticeMaryland · Charles County
- Assessed Value vs. Market Value: How They Differ by StateMaryland · Charles County
- Homestead and Other Exemptions to Check FirstMaryland · Charles County
- Homestead Exemption: What It Is and How to Get ItMaryland · Charles County
- How to Lower Your Property Taxes: What to Check FirstMaryland · Charles County
Counties next to Charles County
- Prince George's County property tax appealsFree check availableNext deadline: Expected Dec 31, 2026 – Jan 4, 2027
- St. Mary's County property tax appealsFree check availableNext deadline: Expected Dec 31, 2026 – Jan 4, 2027
- Calvert County property tax appealsFree check availableNext deadline: Expected Dec 31, 2026 – Jan 4, 2027
Check a Charles County home free
You decide and file yourself.
Where do these facts come from?
- [1]January 1, 2026 Press Release and Report (Reassessment Group 2) | Maryland State Department of Assessments and TaxationOfficial guide or FAQ · last checked Oct 1, 2026
- [2]January 1, 2025 Press Release and Report (Reassessment Group 1) | Maryland State Department of Assessments and TaxationOfficial guide or FAQ · last checked Oct 1, 2026
- [3]January 1, 2024 Press Release and Report (Reassessment Group 3) | Maryland State Department of Assessments and TaxationOfficial guide or FAQ · last checked Oct 1, 2026
- [4]Tax Rates 2026-2027 - Tax Table & Homestead Credit Caps - July 2026 (SDAT PDF)Official guide or FAQ · last checked Sep 30, 2026
- [5]Constant Yield Tax Rate 2026 | Maryland State Department of Assessments and TaxationOfficial notice, form, calendar or rules · last checked Oct 1, 2026
- [6]Assessment Appeal Process | Maryland State Department of Assessments and TaxationOfficial guide or FAQ · last checked Sep 30, 2026
- [7]Charles County Reassessment Areas | Maryland State Department of Assessments and TaxationOfficial guide or FAQ · last checked Sep 30, 2026
- [8]Local Tax Billing/Collection Offices | Maryland State Department of Assessments and TaxationOfficial guide or FAQ · last checked Sep 30, 2026
- [9]Maryland Assessment Offices | Maryland State Department of Assessments and TaxationOfficial guide or FAQ · last checked Oct 1, 2026
- [10]Appeals Boards contact list (AppealsBoardsContacts) | Maryland Property Tax Assessment Appeals BoardsOfficial guide or FAQ · last checked Sep 30, 2026
- [11]Maryland Code, Tax - Property § 14-503 (Maryland General Assembly)Statute or regulation · last checked Sep 27, 2026
- [12]Maryland Code, Tax - Property § 14-502 (Maryland General Assembly)Statute or regulation · last checked Sep 27, 2026
- [13]Assessment Appeal Process | Maryland State Department of Assessments and Taxation (Wayback capture)Official guide or FAQ · last checked Sep 29, 2026
- 14.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25077: Median value (dollars), owner-occupied housing units — Charles County, Maryland
- 15.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25103: Median real estate taxes paid, owner-occupied housing units — Charles County, Maryland
- 16.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25003: Tenure (owner- and renter-occupied housing units) — Charles County, Maryland
Data credits: Census ACS (public domain) · Census county adjacency (public domain)
Not affiliated with Charles County or any government agency. Not legal advice. Not an appraisal.