The Delaware Income Tax Calculator computes your Delaware state income tax using the
state’s seven progressive brackets, the standard or itemized deduction, and the $110
personal credit per exemption. Delaware’s top rate of 6.6% kicks in at just $60,000 of
taxable income, and uniquely the brackets are the same for single and married-joint
filers, which makes Delaware’s structure simpler than the federal one.
How it works
The calculation follows Delaware Form 200-01:
- Deduction — subtract the larger of your itemized deductions or the standard deduction
(
$3,250single /$6,500married-joint), plus an extra$2,500if you are 65+ or blind, to get Delaware taxable income. - Bracket tax — apply the progressive rates to taxable income. Each slice of income is
taxed at its own rate; only the portion above
$60,000is taxed at the top 6.6%. - Personal credits — subtract
$110per exemption directly from the tax. This is a credit, not a deduction, so it reduces the tax dollar-for-dollar (but not below zero).
The brackets
$0 – $2,000 : 0.00%
$2,001 – $5,000 : 2.20%
$5,001 – $10,000 : 3.90%
$10,001 – $20,000 : 4.80%
$20,001 – $25,000 : 5.20%
$25,001 – $60,000 : 5.55%
over $60,000 : 6.60%
Example
A single filer with $65,000 of income subtracts the $3,250 standard deduction for
$61,750 of taxable income. The bracket tax is about $3,151, and one $110 personal
credit lowers it to roughly $3,041 — an effective rate near 4.7% even though the
marginal rate is 6.6%. This tool covers Delaware state tax only; combine it with your
federal return and any Wilmington wage tax for the full picture.