Property Taxes in Delaware

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Median Delaware effective property tax rate: 1.33%, significantly higher than the national median of 1.02%.
Median Delaware home value: $66,000
Median annual Delaware tax bill: $1,454, lower by $946 than the national median property tax bill of $2,400.

How are property taxes in Delaware calculated?

Property taxes in Delaware 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 your county's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you are in Delaware, knowing local tax details benefits homeowners and investors.

Last Updated April 13, 2026

Delaware Property Tax Bill Calculator

Property Assessed Value

$100,000

$1,500,000

$3,000,000

Median Effective Tax Rate

1.33%

Estimate Property Tax Bill

$878

$815

How Does the Delaware Property Tax Calculator Work?

Use this Delaware property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Delaware's median effective tax rate of 1.33% to generate an estimated bill.

Enter your property's estimated assessed value — the value your county assessor assigns to your property, which is typically lower than market value after exemptions. Our calculator uses the median effective tax rate (actual bills divided by assessed market value), accounting for typical exemptions and providing a more accurate estimate than the statutory rate alone.

Note: your assessed value reflects any exemptions you currently hold. Your actual bill may be higher or lower depending on local levies, special assessments, and individual exemption eligibility.

Delaware's median property tax bill is $1,454, below the national median property tax bill of $2,400. County tax bills vary widely, from $945 in Sussex to $2,329 in New Castle, a difference of $946.

For a more localized estimate, scroll down to explore county and city-level property tax trends across Delaware.

Property Tax Rates Across Delaware

What Are Effective Property Tax Rates in Delaware?

Local government entities set tax rates, which can vary widely across Delaware. Each county estimates its required budget to fund public services and divides that by the total assessed value of all taxable property in its jurisdiction. This calculation produces the effective tax rate.

Below, compare any Delaware county's effective rate to other counties in the state or the national median of 1.02%.

For instance, Sussex County has the highest effective property tax rate in Delaware at 2.21%, while New Castle County has the lowest at 0.80%.

Our median effective rate (your actual tax bill divided by the assessor's market value) accounts for all exemptions and deductions, making it more accurate than the general statutory millage rate.

Property Tax Rates Across Delaware

Source: Ownwell

0.80%

1.51%

2.21%

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 Delaware Tax Rate

1.33%

Median Effective United States Tax Rate

1.02%

Property Tax Rates Across Delaware

County	10th Percentile	25th Percentile	Median Tax Rate	75th Percentile	90th Percentile
New Castle	0.46%	0.65%	0.80%	0.97%	1.34%
Sussex	1.57%	2.07%	2.21%	2.46%	2.68%
Kent	N/A	N/A	N/A	N/A	N/A

Source: Ownwell

Property Tax Assessment Values Across Delaware

Understanding the distinction between "market value" and "assessed value" is crucial when examining property taxes in Delaware.

The market value is what a willing buyer would pay to a willing seller in an open and competitive market. Location, property condition, and economic market trends often influence it. Each Delaware county assessor 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 Delaware, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the end of spring.

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. Delaware’s median home price is $66,000, compared with the national median property tax bill of $2,400 and national median property tax rate of 1.02%. For example, New Castle has the highest median home price at $290,430.

Property Tax Assessment Values Across Delaware

Source: Ownwell

$42,600

$166,515

$290,430

Median Delaware Market Value

$66,000

Median United States Market Value

$235,294

Property Tax Assessment Values Across Delaware

County	10th Percentile	25th Percentile	Median Home Price	75th Percentile	90th Percentile
New Castle	$77,151	$192,690	$290,430	$413,910	$545,760
Sussex	$13,900	$25,400	$42,600	$63,000	$83,100
Kent	N/A	N/A	N/A	N/A	N/A

Source: Ownwell

Property Tax Bills Across Delaware

How much are property tax bills across Delaware?

Property tax bills in Delaware are calculated by multiplying the property's assessed value by the local effective tax rate. The assessed value is determined by the county assessor and reflects the market value of the property minus any applicable exemptions.

Delaware homeowners face varying tax obligations depending on their location. The median tax bill in New Castle County is $2,329, while homeowners in Sussex County pay a median of $945.

Factors including property size, recent improvements, and neighborhood comparables all influence the final assessed value, and therefore the tax bill.

Understanding these factors helps property owners evaluate their assessment accuracy and identify whether an informal review or formal appeal may be warranted.

Property Tax Bills Across Delaware

Source: Ownwell

$945

$1,637

$2,329

Median Delaware Tax Bill

$1,454

Median United States Tax Bill

$2,400

Property Tax Bills Across Delaware

County	10th Percentile	25th Percentile	Median Tax Bill	75th Percentile	90th Percentile
New Castle	$824	$1,493	$2,329	$3,474	$4,817
Sussex	$324	$565	$945	$1,407	$1,898
Kent	N/A	N/A	N/A	N/A	N/A

Source: Ownwell

Frequently Asked Property Tax Questions in Delaware

How are property taxes calculated in Delaware?

Property taxes in Delaware are calculated by multiplying your property's assessed value by the applicable tax rate set by local taxing authorities. The assessed value is determined by the county assessor and may differ from your property's market value depending on local assessment ratios and exemptions.

How do I appeal my property taxes in Delaware?

To appeal your property taxes in Delaware, you typically need to file a formal protest or appeal with your local appraisal district or assessor's office by the stated deadline. You'll need evidence such as comparable sales, a recent independent appraisal, or documentation of property condition issues. Ownwell can handle this entire process for you.

What property tax exemptions are available in Delaware?

Common property tax exemptions in Delaware include homestead exemptions for primary residences, senior citizen exemptions, veteran exemptions, and disability exemptions. Exemption amounts and eligibility requirements vary by county. Contact your local appraisal district or check Ownwell for details specific to your property.

When are property taxes due in Delaware?

Property tax deadlines in Delaware vary by county but typically include an assessment notice period in spring or early summer, followed by an appeal deadline, and a tax payment due date in the fall or winter. Check with your county assessor's office for specific dates in your area.

How can Ownwell help reduce my property taxes in Delaware?

Ownwell provides professional property tax appeal services in Delaware. Our team analyzes your assessment, gathers evidence, files all paperwork, and represents you at hearings — all with no upfront cost. You only pay a percentage of your savings if we successfully lower your tax bill.