Calvert County, MD Property Tax: $3,858/yr (2026)
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The effective property tax rate in Calvert County is 0.88% of assessed home value. On a home at the county median value of $440,200, that works out to about $3,874 per year, or $323 per month. Calvert County is located in central Maryland, and is home to approximately 93,791 residents.
About Calvert County
Calvert County covers approximately 213.2 square miles in Maryland. The county is home to about 93,791 residents living in roughly 35,960 housing units, of which 81.2% are owner-occupied. The median household income is $132,059, and the median home was built in 1990.
Calvert County borders Anne Arundel County, Charles County, Dorchester County, Prince George's County, St. Mary's County — useful comparisons if you're considering nearby areas with potentially different tax rates.
How Property Taxes Work in Maryland
Property taxes in Maryland are administered at the county level. Each county sets a millage rate applied to the assessed value of real property — the effective rate above accounts for any partial assessments and exemptions already built into the local tax base. Assessed value can differ meaningfully from current market value depending on how often the county reassesses and what fraction of market value it uses.
Most counties in Maryland offer exemptions that reduce the taxable assessed value: homestead exemptions for primary residences, senior exemptions, disability exemptions, and veteran exemptions are common. These reduce your effective rate below the county-wide average shown here. Contact the Calvert County Assessor's office to learn which exemptions apply to your property and when to file.
Calvert County vs. Neighboring Counties
| Location | Eff. Rate | Median Home | Annual Tax |
|---|---|---|---|
| Calvert County, MD | 0.88% | $440,200 | $3,874 |
| Maryland state average | 0.96% | — | $4,226* |
| Anne Arundel County | 0.85% | $450,300 | $3,836 |
| Charles County | 1.04% | $402,300 | $4,179 |
| Dorchester County | 0.95% | $252,300 | $2,399 |
| Prince George's County | 1.15% | $404,300 | $4,662 |
| St. Mary's County | 0.87% | $390,900 | $3,392 |
| US national average | 1.10% | $281,900 | $3,101 |
*State average annual tax computed at Calvert County's median home value of $440,200. Source: US Census ACS 2023 5-year estimates.
Frequently Asked Questions
How does Calvert County's property tax rate compare to the rest of Maryland?
At 0.88%, Calvert County is lower than the Maryland state average of 0.96%. On a home at the county median of $440,200, that means about $3,874 per year — versus $4,226 at the state average rate, a difference of $352 per year. Compared to the national average of 1.10%, Calvert County is below average.
What's a typical annual property tax bill in Calvert County?
For a home at the county median value of $440,200, the annual property tax in Calvert County is approximately $3,874 — or about $323 per month. For a home worth $660,300, expect around $5,811 per year. For a $880,400 home, approximately $7,748 per year. Use the calculator above to estimate taxes for any assessed value.
Where do I appeal a Calvert County property tax assessment?
Property assessment appeals in Calvert County are handled by the Calvert County Assessor's office. Most jurisdictions require filing within 30–90 days of receiving your assessment notice — confirm the specific deadline with the assessor's office before submitting, as deadlines and procedures vary by county. A successful appeal can reduce your assessed value and lower your tax bill for the current and future tax years.
What exemptions are available in Calvert County?
Maryland counties commonly offer homestead exemptions for owner-occupied primary residences, senior citizen exemptions for qualifying homeowners aged 65 and older, exemptions for disabled residents, and veterans' exemptions. Each exemption reduces your assessed taxable value, which in turn reduces your effective tax rate below the county-wide 0.88% shown here. Contact the Calvert County Assessor's office to confirm which exemptions are available and the application deadlines.
Data sources: US Census Bureau ACS 2023 5-Year Estimates, US Census Gazetteer (2024), County Adjacency File