Property Taxes in Olney, Maryland
Median Olney, Maryland effective property tax rate: 1.15%, significantly higher than the national median of 1.02%, and lower than the Maryland state median of 1.21%.
Median Olney, Maryland home value: $558,300
Median annual Olney, Maryland tax bill: $6,465, $4,065 higher than the national median property tax bill of $2,400.
How are property taxes in Montgomery calculated?
Property taxes in Olney, 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 Olney's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Olney, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
How Does the Olney Property Tax Calculator Work?
Use this Olney property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Olney's median effective tax rate of 1.15% — based on actual property records in Montgomery 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 Olney'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 Olney: rates range from 1.15% in 20832 to 1.15% in 20832, 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 Olney.
About Olney Property Taxes
About Property Taxes in Olney, Montgomery, Maryland
Olney’s median effective property tax rate of 1.15% is lower than the Maryland state median of 1.21% and higher than the national median of 1.02%. This rate reflects the Montgomery 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 Olney. Homeowners in the 20832 ZIP code carry a median effective rate of 1.15%, while those in the same ZIP also pay 1.15%. This reflects how school district boundaries and local assessment districts are drawn across Montgomery County. Understanding which part of Olney you live in can make a meaningful difference to your annual tax bill.
Olney 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 Olney, Montgomery 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 Olney'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 Olney Tax Rate
1.15%
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 Montgomery County Tax Rate
1.19%
Median Effective Maryland Tax Rate
1.21%
Median Effective United States Tax Rate
1.27%
Property Tax Rates Across Olney, Montgomery County, Maryland
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 20832 | 1.05% | 1.11% | 1.15% | 1.18% | 1.20% |
| 20830 | N/A | N/A | N/A | N/A | N/A |
| 20833 | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Assessment Values Across Olney, Montgomery County, Maryland
When examining property taxes in Olney, 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 Montgomery 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 Montgomery County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of the month.
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 Olney is $558,300, with tax bills ranging significantly across the county. 20832 has the highest median home price at $558,200.
Property Tax Assessment Values Across Olney, Montgomery County, Maryland
Source: Ownwell
$110,000
$614,075
$1,118,150
Median Olney Market Value
$558,300
Median Montgomery County Market Value
$520,100
Median Maryland Market Value
$338,400
Median United States Market Value
$274,101
Property Tax Assessment Values Across Olney, Montgomery County, Maryland
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 20832 | $325,000 | $412,050 | $558,200 | $679,650 | $817,820 |
| 20830 | N/A | N/A | N/A | N/A | N/A |
| 20833 | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Bills Across Olney, Montgomery County, Maryland
Property tax bills in Olney are calculated by applying the local tax rate to a home’s assessed value, which is based on its market value. For homeowners, this means the tax bill can rise or fall as property values change, even if the home itself stays the same. With a median home price of $558,300, property taxes can represent a significant ongoing cost.
In Montgomery County, the typical property tax bill in Olney is $6,465, which is well above the national median property tax bill of $2,400 and the national median property tax rate of 1.02%. Bills also vary widely across homeowners, with the 25th percentile at $4,725 and the 75th percentile at $7,619. At the high end, the 90th percentile reaches $9,072, showing how assessed value and local tax rates can affect what homeowners pay each year.
Median Olney Tax Bill
$6,465
Median Montgomery County Tax Bill
$6,208
Median Maryland Tax Bill
$4,092
Median United States Tax Bill
$3,209
Property Tax Bills Across Olney, Montgomery County, Maryland
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 20832 | $3,716 | $4,725 | $6,465 | $7,618 | $9,071 |
| 20830 | N/A | N/A | N/A | N/A | N/A |
| 20833 | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | February 13 |
Links | |
|---|---|
| Montgomery Tax Assessor | |
| Website | sdat.dat.maryland.gov |