Property Taxes in Deal Island, Maryland
Median Deal Island, Maryland effective property tax rate: 0.89%, significantly lower than the national median of 1.02%, and lower than the Maryland state median of 1.21%.
Median Deal Island, Maryland home value: $165,000
Median annual Deal Island, Maryland tax bill: $1,414, lower than the national median property tax bill of $2,400.
How are property taxes in Somerset calculated?
Property taxes in Deal Island, 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 Deal Island's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Deal Island, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
How Does the Deal Island Property Tax Calculator Work?
Use this Deal Island property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Deal Island's median effective tax rate of 0.89% — based on actual property records in Somerset County — to generate your estimate.
Enter your property's estimated assessed value — the figure the local assessment process uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Deal Island'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 Deal Island: rates are 0.89% in 21821, 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 Deal Island.
About Deal Island Property Taxes
About Property Taxes in Deal Island, Somerset, Maryland
Deal Island's median effective property tax rate of 0.89% is lower than the Maryland state median of 1.21% and lower than the national median of 1.02%. This rate reflects the Somerset 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 Deal Island. Homeowners in the 21821 ZIP code carry a median effective rate of 0.89%, while those in 21821 pay 0.89%. This spread — 0.00 percentage points across the same city — reflects how school district boundaries and local assessment districts are drawn across Somerset County. Understanding which part of Deal Island you live in can make a meaningful difference to your annual tax bill.
Deal Island 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 Deal Island, Somerset 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 Deal Island'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 Deal Island Tax Rate
0.89%
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 Somerset County Tax Rate
0.95%
Median Effective Maryland Tax Rate
1.21%
Median Effective United States Tax Rate
1.27%
Property Tax Rates Across Deal Island, Somerset County, Maryland
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 21821 | 0.71% | 0.83% | 0.89% | 0.94% | 0.98% |
Source: Ownwell
Property Tax Assessment Values Across Deal Island, Somerset County, Maryland
When examining property taxes in Deal Island, 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 Somerset County appraisal district 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 Somerset 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 Deal Island is $165,000, with tax bills ranging significantly across the county. 21821 has the highest median home price at $165,000.
Deal Island’s median property tax bill is $1,414, compared with the national median property tax bill of $2,400 and the national median property tax rate of 1.02%.
Property Tax Assessment Values Across Deal Island, Somerset County, Maryland
Source: Ownwell
$50,700
$111,800
$172,900
Median Deal Island Market Value
$165,000
Median Somerset County Market Value
$142,700
Median Maryland Market Value
$338,400
Median United States Market Value
$274,101
Property Tax Assessment Values Across Deal Island, Somerset County, Maryland
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 21821 | $56,300 | $92,050 | $165,000 | $302,050 | $447,600 |
Source: Ownwell
Property Tax Bills Across Deal Island, Somerset County, Maryland
Property tax bills in Deal Island are based on a home’s assessed value, not its market price alone. Local tax rates are applied to the assessment, so the final bill reflects both the value assigned to the property and the rate set by Somerset County. For a median home price of $165,000, the tax bill can vary widely depending on the assessment and any exemptions or local adjustments that apply.
Homeowners in Deal Island typically see bills that fall between $792 at the 25th percentile and $2,622 at the 75th percentile, with the 90th percentile reaching $3,977. The median tax bill is $1,414, which is below the national median property tax bill of $2,400 and below the national median property tax rate of 1.02%. That means many homeowners here pay less than the typical U.S. homeowner, but a higher assessment can still raise the bill significantly.
Median Deal Island Tax Bill
$1,414
Median Somerset County Tax Bill
$1,326
Median Maryland Tax Bill
$4,092
Median United States Tax Bill
$3,209
Property Tax Bills Across Deal Island, Somerset County, Maryland
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 21821 | $449 | $792 | $1,414 | $2,622 | $3,977 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | February 13 |
Links | |
|---|---|
| Somerset Tax Assessor | |
| Website | sdat.dat.maryland.gov |