Westminster, Carroll County, Maryland Property Taxes
Property Taxes in Westminster, Maryland
Median Westminster, Maryland effective property tax rate: 1.03%, significantly lower than the national median of 1.02%, and lower than the Maryland state median of 1.21%.
Median Westminster, Maryland home value: $364,100
Median annual Westminster, Maryland tax bill: $3,833, higher than the national median property tax bill of $2,400.
How are property taxes in Carroll calculated?
Property taxes in Westminster, Maryland are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.
Understanding Westminster's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Westminster, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Westminster, Carroll County, Maryland Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
1.03%
Estimate Property Tax Bill
$3,750
$3,480
How Does the Westminster Property Tax Calculator Work?
Use this Westminster property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Westminster's median effective tax rate of 1.03% — based on actual property records in Carroll County — to generate your estimate.
Enter your property's estimated assessed value — the figure the local appraisal district uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Westminster's median effective rate across all local levies, providing a more accurate estimate than applying a single county millage rate.
Your bill may vary by ZIP code within Westminster: rates range from $3,745.00 in 21157 to $3,970.00 in 21158, primarily due to differences in school district levies and local assessment districts.
For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across Westminster.
About Westminster Property Taxes
About Property Taxes in Westminster, Carroll, Maryland
Westminster’s median effective property tax rate of 1.03% is lower than the Maryland state median of 1.21% and higher than the national median of 1.02%. This rate reflects the Carroll County base levy combined with local school district levies and special taxing districts that vary by subdivision throughout the city.
Property tax rates are not uniform across Westminster. Homeowners in the 21158 ZIP code carry a median effective rate of 1.06%, while those in 21157 pay 1.02%. This spread — 0.04 percentage points across the same city — reflects how school district boundaries and local assessment districts are drawn across Carroll County. Understanding which part of Westminster you live in can make a meaningful difference to your annual tax bill.
Westminster homeowners who believe their assessed value is too high can file a formal appeal with the Tax Assessor before the February 13, 2026 deadline each year.
If your estimated bill above seems higher than expected, Ownwell can review your assessment and protest on your behalf. You only pay if we save you money.
Property Tax Rates Across Westminster, Carroll County, Maryland
As noted earlier, local government entities set tax rates, which can vary widely within a state.
Why? Because annually, each county estimates its required budget to provide services and divides that by the total value of all taxable property within its jurisdiction. This calculation results in the property tax rate.
While there are votes and laws involved in setting tax rates and budgets, in a nutshell, this is the annual process.
Below, you can compare Westminster's effective property tax rate to other cities in Maryland and the median property tax rates in Maryland and the U.S.
Our median effective property tax rate (tax bill Ă· assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Westminster Tax Rate
1.03%
Our median effective property tax rate (tax bill Ă· assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Carroll County Tax Rate
1.13%
Median Effective Maryland Tax Rate
1.21%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Westminster, Carroll County, Maryland
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 21157 | 0.89% | 0.95% | 1.02% | 1.13% | 1.43% |
| 21158 | 0.91% | 0.98% | 1.06% | 1.43% | 1.49% |
Source: Ownwell
Property Tax Assessment Values Across Westminster, Carroll County, Maryland
When examining property taxes in Westminster, Maryland, understanding the distinction between "market value" and "assessed value" is crucial.
The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The Carroll County assessment office estimates the market value for tax purposes.
The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.
Assessment notices:
In Carroll County, assessment notices are sent in December each year. They'll typically reach your mailbox by the middle of December.
Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. By providing insights into how assessed and market values are determined, this section helps property owners navigate their tax responsibilities and understand the valuation processes affecting their property taxes in Westminster.
For example, the median home price in Westminster is $364,100, with tax bills ranging significantly across the county. 21158 has the highest median home price at $365,100.
Property Tax Assessment Values Across Westminster, Carroll County, Maryland
Source: Ownwell
$295,000
$383,575
$472,150
Median Westminster Market Value
$364,100
Median Carroll County Market Value
$368,200
Median Maryland Market Value
$338,400
Median United States Market Value
$235,294
Property Tax Assessment Values Across Westminster, Carroll County, Maryland
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 21157 | $221,000 | $287,800 | $363,700 | $466,900 | $597,900 |
| 21158 | $228,500 | $275,500 | $365,100 | $464,600 | $584,300 |
Source: Ownwell
Property Tax Bills Across Westminster, Carroll County, Maryland
Property tax bills in Westminster are based on the assessed value of a home, not its market price alone. Local tax rates are applied to that assessment to determine the amount a homeowner owes each year. For many homeowners, the size of the bill depends on both the home’s value and the tax rate set by local governments.
In Westminster, the median home price is $364,100, and the median property tax bill is $3,970 in ZIP code 21158, compared with $3,745 in ZIP code 21157. That range shows how location within the city can affect what homeowners pay. Bills can also rise when assessments increase, which can make housing costs less predictable over time.
Compared with the national median property tax bill of $2,400, Westminster homeowners generally face higher annual property taxes. For homeowners, that means property taxes can be a significant part of the total cost of owning a home and an important factor to watch closely.
Median Westminster Tax Bill
$3,833
Median Carroll County Tax Bill
$4,060
Median Maryland Tax Bill
$4,092
Median United States Tax Bill
$2,400
Property Tax Bills Across Westminster, Carroll County, Maryland
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 21157 | $2,488 | $3,048 | $3,745 | $4,732 | $5,991 |
| 21158 | $2,615 | $3,288 | $3,970 | $5,237 | $7,118 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | February 13 |
Links | |
|---|---|
| Carroll Tax Assessor | |
| Website | sdat.dat.maryland.gov |