Property Taxes in Callaway, Maryland
Median Callaway, 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 Callaway, Maryland home value: $323,650
Median annual Callaway, Maryland tax bill: $3,311, higher than the national median property tax bill of $2,400.
How are property taxes in St. Mary's calculated?
Property taxes in Callaway, 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 Callaway's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Callaway, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
How Does the Callaway Property Tax Calculator Work?
Use this Callaway property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Callaway's median effective tax rate of 1.03% — based on actual property records in St. Mary's County — to generate your estimate.
Enter your property's estimated assessed value — the figure the local assessment system uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Callaway'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 Callaway: rates are 3311.00 in 20620, primarily due to differences in school district levies and local assessment districts. Callaway's median effective tax rate is higher than the Maryland median tax rate of 1.21%, and the median tax bill is $3311, which is $911 higher than the state median tax bill.
For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across Callaway.
About Callaway Property Taxes
About Property Taxes in Callaway, St. Mary's, Maryland
Callaway’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 St. Mary's 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 Callaway. Homeowners in the 20620 ZIP code carry a median effective rate of 1.03%, while those in the same ZIP code also pay 1.03%. This reflects how school district boundaries and local assessment districts are drawn across St. Mary's County. Understanding which part of Callaway you live in can make a meaningful difference to your annual tax bill.
Callaway homeowners who believe their assessed value is too high can file a formal appeal with the Tax Assessor before February 13, 2026.
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 Callaway, St. Mary's 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 Callaway'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 ÷ 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 Callaway Tax Rate
1.03%
Our median effective property tax rate (tax bill ÷ 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 St. Mary's County Tax Rate
1.00%
Median Effective Maryland Tax Rate
1.21%
Median Effective United States Tax Rate
1.27%
Property Tax Rates Across Callaway, St. Mary's County, Maryland
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 20620 | 0.95% | 0.99% | 1.03% | 1.07% | 1.12% |
Source: Ownwell
Property Tax Assessment Values Across Callaway, St. Mary's County, Maryland
When examining property taxes in Callaway, 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 St. Mary's 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 St. Mary's County, assessment notices are sent in the spring 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. For example, the median home price in Callaway is $323,650, with a median tax bill of $3,311. Tax bills range from $2,073 at the 25th percentile to $4,043 at the 75th percentile and $4,793 at the 90th percentile. The zip code 20620 has the highest median home price at $323,650.
Property Tax Assessment Values Across Callaway, St. Mary's County, Maryland
Source: Ownwell
$243,700
$385,275
$526,850
Median Callaway Market Value
$323,650
Median St. Mary's County Market Value
$332,600
Median Maryland Market Value
$338,400
Median United States Market Value
$274,101
Property Tax Assessment Values Across Callaway, St. Mary's County, Maryland
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 20620 | $166,890 | $199,250 | $323,650 | $405,625 | $485,140 |
Source: Ownwell
Property Tax Bills Across Callaway, St. Mary's County, Maryland
Property tax bills in Callaway are based on the assessed value of a home, not the market price alone. Local tax rates are applied to that assessed value to determine the amount a homeowner owes each year. In St. Mary's County, the median home price is $323,650, and the median property tax bill is $3,311, which is above the national median property tax bill of $2,400.
Several factors can affect the final bill, including the home’s assessed value, the local tax rate, and any exemptions or special assessments that may apply. Homes with higher assessed values generally face higher bills, while properties with lower assessments may owe less.
For homeowners, this means property taxes can have a meaningful impact on annual housing costs. In Callaway, bills can vary widely, with the 25th percentile at $2,073 and the 75th percentile at $4,043. That range shows how differences in assessed value and local taxation can lead to very different tax obligations from one home to another.
Median Callaway Tax Bill
$3,311
Median St. Mary's County Tax Bill
$3,276
Median Maryland Tax Bill
$4,092
Median United States Tax Bill
$3,209
Property Tax Bills Across Callaway, St. Mary's County, Maryland
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 20620 | $1,754 | $2,073 | $3,311 | $4,043 | $4,793 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | February 13 |
Links | |
|---|---|
| St. Mary's Tax Assessor | |
| Website | sdat.dat.maryland.gov |