US Tax Tools

Delaware Tax Calculator

Delaware taxes income through a tiered bracket system, and because the state has no sales tax at all, income tax carries an outsized share of state revenue. Most working residents reach Delaware's top bracket at a relatively modest income level. Older residents can also exclude a portion of pension and retirement income from state tax. This calculator applies Delaware's brackets to your entered income.

01INPUTS
Calculate Your State Income Tax
On $100,000 of taxable income in Delaware, your estimated state income tax is $5,584 at an effective rate of 5.58%.
Want to compare two states?State Tax Comparison
Share

State Tax

$5,584

Effective Rate

5.58%

Marginal Rate

6.60%
03BREAKDOWN
Tax Bracket Breakdown — Delaware
0.00%$0
$0 – $2,000
2.20%$66
$2,000 – $5,000
3.90%$195
$5,000 – $10,000
4.80%$480
$10,000 – $20,000
5.20%$260
$20,000 – $25,000
5.55%$1,943
$25,000 – $60,000
6.60%$2,640
$60,000+
Total$5,584
Edit inputs ↑

How Delaware income tax works

  • Delaware layers several brackets, so income is taxed progressively as it rises.
  • With no statewide sales tax, Delaware relies more heavily on income tax revenue than most states.
  • Residents aged sixty and older can exclude a portion of pension and retirement income from the state calculation.

Need the exact bracket thresholds instead of an estimate? See the Delaware tax brackets for 2026 .

Estimate your Delaware property tax by county, compare every state at the state tax brackets hub , or see the full tax-by-state directory .

Frequently asked questions

How is Delaware income tax calculated?

Delaware applies a tiered bracket schedule to your taxable income, taxing each slice at its own rate. The calculator applies the current brackets to your entered income.

Does Delaware tax Social Security benefits?

No. Delaware excludes Social Security benefits from state taxable income entirely.

Does Delaware have a sales tax?

No — Delaware is one of the few states with no statewide sales tax, which is part of why income tax plays such a central role in funding state government.

How much state tax will I pay in Delaware?

It depends on your taxable income and whether you qualify for the retirement-income exclusion available to older residents. Enter your figures above for an exact total.

Sources

Related insights

Use these guides for rule explanations, planning context, and follow-up questions beyond the calculator result.

Related Calculators

Last updated July 19, 2026 Tax year 2025 + 2026 state income tax

Data sources: Delaware revenue department rate tables + Tax Foundation 2025

This tool is general information only, not financial advice.

Reviewed by USTax Tools Editorial Desk

Read our methodology →