Property Taxes in Delaware: Rates, Exemptions, and How They Work (2026)
TL;DR
Delaware has relatively low property taxes with an average effective rate of about 0.53%. The state has not done a statewide reassessment in decades, so assessed values in most areas are far below current market values. This means tax rates are high on paper but applied to very low assessed values. The Senior School Property Tax Credit helps homeowners 65+ with school taxes. There is no state property tax. County and school district rates apply. Appeal to the county Board of Assessment.
Delaware's three counties (New Castle, Kent, Sussex) have not conducted comprehensive reassessments in decades. This guide walks through property Taxes in Delaware: Rates, Exemptions, and How They Work (2026) step by step.
If you qualify for multiple exemptions, apply for all of them. In most jurisdictions, exemptions stack. A senior homeowner who is also a veteran can often claim both exemptions simultaneously, doubling the savings.
The Reassessment Issue
Delaware's three counties (New Castle, Kent, Sussex) have not conducted comprehensive reassessments in decades. New Castle County's assessments date to 1983. This means assessed values bear little relationship to current market values. Courts have ordered reassessments in some cases, but the process is slow.
Understanding this topic fully means looking at both the big picture and the specific details that apply to your situation. Every property is different, and the strategies that save the most money are the ones tailored to your particular home, location, and circumstances.
Start by gathering the basic facts about your property: its assessed value, the tax rate in your jurisdiction, and any exemptions currently applied. Then compare your situation to what is available. You may find opportunities for savings that you did not know existed.
Tax Rates
Because assessed values are so outdated and low, Delaware's stated tax rates appear high. But when applied to the low assessed values, the effective tax on market value is quite low.
Understanding this topic fully means looking at both the big picture and the specific details that apply to your situation. Every property is different, and the strategies that save the most money are the ones tailored to your particular home, location, and circumstances.
Start by gathering the basic facts about your property: its assessed value, the tax rate in your jurisdiction, and any exemptions currently applied. Then compare your situation to what is available. You may find opportunities for savings that you did not know existed.
Exemptions
| Program | Benefit | Who Qualifies |
|---|---|---|
| Senior School Property Tax Credit | 50% credit on school taxes (up to $500) | 65+, owner-occupied 3+ years |
| Disabled Veterans | Full exemption | 100% disabled veterans or surviving spouse |
| Homestead Exemption (New Castle Co.) | Varies | Owner-occupied |
Do not assume you are automatically enrolled. Most exemptions require an application, and many homeowners lose years of savings simply because they never filed. Contact your county assessor's office or check their website for the application form. Bring proof of eligibility (age verification, disability documentation, veteran status, etc.) and file well before the deadline.
If you qualify for multiple exemptions, apply for all of them. In most jurisdictions, exemptions stack. A senior homeowner who is also a veteran can often claim both exemptions simultaneously, doubling the savings.
Appeal
- County Board of Assessment: File during the appeal period (varies by county)
- Superior Court: Appeal within 30 days
Check your Delaware assessment with our free property tax analyzer.
The appeal process is designed to be accessible to regular homeowners, not just attorneys and tax professionals. You do not need to hire anyone to file. The key is preparation. Gather your evidence before the hearing, organize it clearly, and practice presenting your case in under 10 minutes. Lead with comparable sales, then cover any property record errors, and finish with photos or documentation of condition issues.
Keep your tone professional and factual. Review boards respond to evidence, not complaints. If you walk in with 3 strong comparable sales and a calm, organized presentation, you are already ahead of most appellants.
Your Next Steps
Here is exactly what to do this week to start lowering your Delaware property taxes:
- Pull your property record card. Contact your county assessor's office or check their website. Compare every detail to your actual property. Flag anything that looks wrong.
- Check recent sales in your neighborhood. Look up 3 to 5 homes similar to yours that sold in the past 12 months. If they sold for less than your assessed value, you have a case.
- File for any exemptions you have not claimed. If you are a senior, veteran, or disabled homeowner in Delaware, there may be exemptions saving you hundreds or thousands per year that you have not applied for yet.
- Mark your appeal deadline. Find the date on your most recent assessment notice and set a reminder for two weeks before. Do not let the deadline pass without acting.
Applying This in Delaware
Delaware homeowners face an effective property tax rate of about 0.57%. On a $300,000 home, that translates to roughly $1,709 per year. Even a modest reduction in assessed value creates meaningful annual savings that compound year over year.
In Delaware, the appeal process goes through the county Board of Assessment Review. The process is designed to be accessible to homeowners without professional representation. You file a petition, present your evidence (comparable sales are the strongest tool), and receive a decision. Most appeals are resolved within a few months of filing.
If you have not reviewed your Delaware assessment recently, now is the time. Pull your property record card, check for errors, compare your assessed value to recent neighborhood sales, and file for any exemptions you qualify for. The combination of these steps can reduce your tax bill significantly without spending a lot of time or money.
Why Most Homeowners Overpay
Studies consistently show that a large percentage of residential properties are over-assessed. The Lincoln Institute of Land Policy found that roughly 40% of assessments are off by more than 10%. That is not a rounding error. On a $350,000 home, a 10% overvaluation means you are paying taxes on $35,000 of value that does not exist.
The reason is simple: assessors use mass appraisal models to value thousands of properties at once. They cannot inspect every home individually. The models rely on averages, which means homes that are below average in condition, location, or desirability often get assessed too high. If your home has any characteristics that reduce its value compared to the average home in your area, your assessment may be inflated.
The only way to fix this is to check your assessment yourself. Compare it to actual sales of similar properties. If the numbers do not match, file an appeal. The process exists for exactly this purpose, and homeowners who use it save an average of $1,000 to $3,000 per year.
Appealing does not increase your assessment. In most jurisdictions, the review board can only lower your value or leave it unchanged. There is no downside to filing a well-prepared appeal.
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Frequently Asked Questions
How are property taxes calculated in Delaware?
Delaware has relatively low property taxes with an average effective rate of about 0.53%. The state has not done a statewide reassessment in decades, so assessed values in most areas are far below current market values. This means tax rates are high but the actual tax on market value is quite low.
Why haven't Delaware counties updated property assessments?
Delaware's three counties (New Castle, Kent, Sussex) have not conducted comprehensive reassessments in decades. New Castle County's assessments date to 1983. This means assessed values bear little relationship to current market values.
What are the property tax rates in Delaware?
Because assessed values are so outdated and low, Delaware's stated tax rates appear high. But when applied to the low assessed values, the effective tax on market value is quite low.
Can I appeal my Delaware property tax assessment?
Check your Delaware assessment with our free property tax analyzer.