Delaware Property Tax Calculator 2026

How Delaware Property Tax Works

Property tax in Delaware is an annual tax levied on real estate by local governments — primarily counties, municipalities, and school districts. The amount you owe is determined by your property's assessed value multiplied by the local mill rate. On average, Delaware homeowners pay 0.54% of their home's value in property tax each year, 0.40 percentage points below the U.S. figure of 0.94%.

The effective rate combines all local levies: county tax, municipal tax, school district tax, and any special assessments. Because Delaware has multiple taxing jurisdictions, your actual rate depends heavily on where in the state your property is located. The 0.54% figure is all real-estate tax paid on owner-occupied homes in Delaware divided by their total value, as published in the Tax Foundation's Property Taxes by State and County, 2026 from Census Bureau American Community Survey data for 2020–2024. It is a statewide average — not a rate any single jurisdiction charges, and not your bill.

The Census Bureau puts the median owner-occupied home in Delaware at $352,000 and the median real-estate tax bill at $1,768 a year — roughly $147 per month when paid through a mortgage escrow account (American Community Survey, 2020–2024).

Who Collects Property Tax in Delaware — and How Rates Are Set

In Delaware, property is valued and taxes are collected at the county level: a county assessor's office sets values and a treasurer or tax collector (titles vary) sends the bill. State law sets the framework; counties, municipalities, school districts and special districts each set their own levies within it.

Mill rates (expressed as dollars of tax per $1,000 of assessed value) are set annually based on local budget needs. Ten mills is 1% of assessed value, which equals 1% of market value only where homes are assessed at full market value. States differ on that — some tax full market value, others a fixed fraction of it — so your assessment notice is the place to check which applies to you. If your home's market value rises faster than neighboring properties, your share of the tax burden can increase even if the mill rate stays the same.

To find your exact rate, contact your county assessment office or check its official website. Your most recent property tax bill will also show the breakdown of all levies applied to your parcel.

Delaware Property Tax Exemptions and Relief Programs

Delaware homeowners aged 65 or older can get a credit of 50% of regular school property taxes, up to $500, on their primary residence under the Senior School Property Tax Relief program. New applicants need at least 10 consecutive years of Delaware residency, the previous year's bill must have been paid in full, and the application deadline is April 30. Source: Delaware Department of Finance — Senior School Property Tax Relief.

Veterans may qualify for separate property-tax relief, which takes a different form in each state - an exemption, a credit or a refund - so ask your county assessment office what Delaware offers. Agricultural land often receives a preferential assessment based on use-value rather than market value. If you believe your assessment is incorrect, you have the right to appeal — the deadline is printed on your assessment notice and is often only a few weeks away.

To apply for any exemption, contact your county assessment office. Most exemptions require an annual or one-time application and proof of eligibility (residency, age, disability documentation, etc.).

Tips to Manage Your Delaware Property Tax Bill

First, verify your assessment is accurate. Review your property record card at your county assessment office and check for errors in square footage, bedroom/bathroom count, or lot size. Even small errors can inflate your assessed value and tax bill. If the assessment seems high, look up recent sale prices of comparable homes in your neighborhood and file an appeal if warranted.

Second, apply for every exemption you qualify for. Homestead, senior, veteran, and disability exemptions can reduce your taxable value by thousands of dollars. Third, if your mortgage servicer handles tax payments through escrow, review your escrow statement annually. Servicers sometimes over-estimate and hold excess funds — you may be entitled to a refund. Finally, Delaware county and school property tax bills are typically due September 30.