📚 Delaware Property Tax Guide 2026

How Delaware Property Tax Works

In Delaware, your property tax starts with the assessed (taxable) value of your home, which is then multiplied by the local tax rate. The state's assessment basis is market value with a county-based system; Delaware has no state sales tax and a senior school-tax credit. The average effective property tax rate in Delaware is approximately 0.56% of home value, though your actual rate depends on your county, city, school district, and any exemptions you claim.

This guide explains the system in plain language so you can check your bill, claim every exemption you qualify for, and appeal if your assessed value looks wrong.

Delaware Assessment & Revaluation

• Assessment basis: market value with a county-based system; Delaware has no state sales tax and a senior school-tax credit.
• Revaluation cycle: on a county reappraisal cycle, with locally set rates.
• Who sets the rate: Tax rates are set locally by your county, city, school district, and any special districts, then applied to your assessed value.
• Your bill: Assessed value × total local rate − exemptions = tax due.

Delaware County Tax Rates (2025)

The table below shows approximate average effective tax rates and typical annual tax for representative Delaware counties. Rates vary by locality because of different voter-approved levies and district boundaries. Figures are estimates for illustration; verify the exact numbers with your county assessor.

Homestead Exemption in Delaware

Delaware has no broad flat homestead exemption, but owners 65+ receive a credit against the school property tax portion.

• Seniors: The senior school-tax credit (age 65+) exempts qualifying elders from much of the school property tax.
• Veterans & disabled: 100% service-connected disabled veterans and surviving spouses receive a full exemption of the primary residence.
• File every year: Most Delaware exemptions must be applied for with the county assessor; they do not appear automatically on a new purchase.

How to Lower Your Delaware Property Tax

1. File an Assessment Appeal

If your assessed value is higher than what similar Delaware homes sell for, you can appeal. The deadline is by the county deadline (commonly March), to the county Board of Assessment. Gather recent comparable sales and the assessed values of nearby homes, then present them to your local board. A successful appeal lowers the base value and therefore every future bill.

2. Claim Every Exemption

Verify you receive all eligible relief: the homestead exemption, the senior/disabled programs, and any veteran exemption. Contact your county assessor to confirm you are not missing a saving you qualify for.

3. Watch Reassessment Triggers

Improvements, a change of ownership, or a periodic revaluation can raise your assessed value. Knowing your county's on a county reappraisal cycle, with locally set rates helps you predict and prepare for bill changes rather than being surprised by them.

4. Use Our Calculator

Model the dollar result before you act. Our property tax calculator and the exemption calculator show how exemptions and rates change your bill in Delaware.

Property Tax Payment in Delaware

Most Delaware homeowners pay property tax through an escrow account included in their monthly mortgage payment, or in installments directly to the treasurer. Missing a deadline adds penalties and interest, so mark your payment dates and watch for the assessment and tax notices each year. If you escrow, your lender forwards the payment — but you should still read the annual notice to catch errors.

Delaware vs. Other States

How does Delaware compare? The points below put the state's system in context:

• vs. Maryland: Delaware's average effective rate of about 0.56% is lower than Maryland's ~1.04%, and Maryland also has a broad state income tax. Homeowners moving between the two states should re-model their bill rather than assume it stays the same.
• vs. Pennsylvania: Delaware's average effective rate of about 0.56% is lower than Pennsylvania's ~1.35%, and Pennsylvania also has a broad state income tax. Homeowners moving between the two states should re-model their bill rather than assume it stays the same.
• vs. New Jersey: Delaware's average effective rate of about 0.56% is lower than New Jersey's ~2.10%, and New Jersey also has a broad state income tax. Homeowners moving between the two states should re-model their bill rather than assume it stays the same.

Frequently Asked Questions — Delaware

What is the average property tax rate in Delaware?

The average effective rate is about 0.56% of home value, but your actual rate depends on your county, city, and school district. A home in a high-levy district can owe noticeably more than the same-priced home in a lower-levy district.

How is property assessed in Delaware?

market value with a county-based system; Delaware has no state sales tax and a senior school-tax credit Revaluation follows this schedule: on a county reappraisal cycle, with locally set rates. The assessed value × local rate, minus any exemptions, produces your bill.

Does Delaware have a homestead exemption?

Delaware has no broad flat homestead exemption, but owners 65+ receive a credit against the school property tax portion.

What relief is available for seniors and veterans in Delaware?

For seniors: The senior school-tax credit (age 65+) exempts qualifying elders from much of the school property tax. For veterans and disabled owners: 100% service-connected disabled veterans and surviving spouses receive a full exemption of the primary residence.

When is the property tax appeal deadline in Delaware?

You generally must appeal by the county deadline (commonly March), to the county Board of Assessment. File on time with comparable sales evidence, because missing the window pushes any refund or reduction to the next year.

Does Delaware have a state income tax?

Delaware has a state income tax. This matters because states without an income tax often rely more on the property tax for local services, which is why exemptions and appeals are especially valuable here.

Are Delaware property taxes deductible on federal returns?

Yes, Delaware property tax is deductible on Schedule A, but the $10,000 SALT cap limits the total state and local tax deduction for higher-income homeowners. The deduction lowers your federal tax but does not reduce your Delaware property tax bill itself.

How can I lower my Delaware property tax bill?

Three steps help most owners: (1) appeal an over-assessment using comparable sales; (2) claim every homestead, senior, and veteran exemption you qualify for; and (3) understand your county's revaluation schedule so bill changes never catch you off guard. Our calculators model the savings in dollars.

What Makes Delaware Property Tax Unique

Delaware's senior school-tax credit is the headline relief, removing much of the school portion for owners 65+

Because rates are county-based, the same home can owe different amounts across county lines.

• Delaware has no state sales tax, so property tax carries more local weight.
• The 65+ senior school-tax credit is the main relief.
• Rates are set by each county.
• 100% disabled veterans receive a full exemption.

Understanding the Delaware Tax Rate

The headline "0.56%" is an average effective rate — the tax paid as a share of home value. Your real bill is built from several local levies (county, city, school, and special districts) added together and applied to your assessed value after exemptions. Because each district sets its own rate, two neighbors a block apart can owe different amounts. The best way to understand your own rate is to read the annual assessment and tax notice line by line and match each levy to the district that charges it.

Appealing Your Assessment in Delaware

If your assessed value exceeds the market value of comparable Delaware homes, you can appeal. The window is by the county deadline (commonly March), to the county Board of Assessment. Prepare recent comparable sales, the assessed values of similar nearby homes, and any evidence of condition issues. A successful appeal lowers the taxable base, which then flows through to every future bill — not just the current year.

Worked Delaware Example

A homeowner buys a $300,000 primary residence in Delaware. At the state's average effective rate of about 0.62%, the annual property tax is roughly $1,860. If the home's market value rises over time but the assessment is capped or grows slowly under state rules, the owner keeps the bill far closer to the purchase-year figure than to a tax on full market value — a saving that compounds for as long as they stay. Our calculator models the dollar result once you know your county rate.

Delaware Property Tax for Long-Time & Senior Owners

A Delaware senior should file the 65+ school-tax credit, because it removes much of the school portion of the bill for qualifying elders. Because Delaware's system is built around the assessed value and local levies, the most valuable habit is simply staying aware of revaluation triggers and filing every exemption you qualify for each year. Reviewing your annual assessment notice is the simplest way to catch an error before it costs you, and it keeps your exemptions current.