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Delaware Property Tax Estimator

Estimate property tax for any county in Delaware, based on median effective rates from the US Census Bureau. Covers 3 counties.

Lowest county rate

0.31%

Sussex County

Highest county rate

0.72%

New Castle County

Counties covered

3

Data vintage

2024

Kent County median effective rate0.43%
County median tax paid (2024)$1,363
Rates updated for June 2026

Estimated property tax for a $300,000 home in Kent County

Estimated annual

$1,290

Estimated monthly

$108

This is an estimate based on the county median effective rate, not a precise tax bill. Your actual property tax depends on your home's assessed value, local mill rate, and any exemptions you qualify for.

This calculator is for informational purposes only and does not constitute tax advice. Consult a qualified tax professional for your specific situation. Rates last verified June 2026.

Verify rates on Tax Foundation — "Property Taxes by State and County, 2026" by Janelle Fritts

Delaware property tax rates by county

Sorted highest to lowest median effective rate. Source: Tax Foundation — "Property Taxes by State and County, 2026" by Janelle Fritts.

CountyMedian tax paidMedian effective rateYoY change
New Castle County$2,4990.72%-0.8%
Kent County$1,3630.43%-0.7%
Sussex County$1,2220.31%+1.2%

Median effective rate = total real estate taxes paid ÷ total home value, for owner-occupied housing (2024 American Community Survey). YoY change is the inflation-adjusted change in taxes paid, 2023–2024. "N/A" indicates the Census Bureau's sample size was too small for a reliable county-level estimate.

Frequently asked questions

What is the property tax rate in Delaware?
Delaware's effective property tax rate varies significantly by county — from about 0.31% in Sussex County to about 0.72% in New Castle County. This is based on the median amount homeowners actually pay relative to their home's value (US Census Bureau, 2024 American Community Survey), not a single statutory rate. Select your county above to see its specific median rate.
What county has the highest property tax rate in Delaware?
New Castle County has the highest median effective property tax rate in Delaware, at approximately 0.72%. This means homeowners there typically pay about 0.72% of their home's value in property tax each year, based on US Census Bureau data. Actual bills vary by individual assessment and any exemptions.
What county has the lowest property tax rate in Delaware?
Sussex County has the lowest median effective property tax rate in Delaware, at approximately 0.31%. This means homeowners there typically pay about 0.31% of their home's value in property tax each year, based on US Census Bureau data. Actual bills vary by individual assessment and any exemptions.
Why is this an estimate and not my exact property tax bill?
Property tax in Delaware, like everywhere in the US, is calculated using your home's assessed value and the local mill rate set by your county, city, and school district — not a flat statewide percentage. Our estimator uses the county median effective rate (what a typical homeowner actually pays, relative to home value) to give you a reasonable estimate. Your actual bill depends on your specific assessment and any exemptions you qualify for.

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