Estimate your Delaware state income tax plus combined federal and DE state tax for 2026. 6.6% top rate.
Delaware has progressive income tax brackets with a top rate of 6.6% on income over $60,000. Delaware has no state sales tax, which partially offsets its income tax burden. Delaware is known as a business-friendly state. Use the calculator above to estimate your combined federal and Delaware state income tax for 2026. State tax figures use a simplified rate — for precise Delaware state tax calculations, consult the Delaware Department of Revenue or a licensed tax professional.
Delaware has a 6.6% top rate state income tax for 2026. Delaware has progressive income tax brackets with a top rate of 6.6% on income over $60,000. Delaware has no state sales tax, which partially offsets its income tax burden. Delaware is known as a business-friendly state. The state income tax is calculated separately from federal income tax and is paid through payroll withholding or quarterly estimated payments.
Delaware has its own state standard deduction separate from the federal standard deduction ($15,750 single, $31,500 MFJ in 2026). For precise Delaware state deduction amounts, consult the Delaware Department of Revenue or a state tax professional.
Delaware's 6.6% top rate state income tax can be compared to other states using our state tax calculator above. The U.S. average top marginal state income tax rate is approximately 5-6%. Nine states have no income tax at all (Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, Wyoming), while California has the highest at 13.3%.
Delaware offers state tax credits and deductions that may reduce your state tax liability. Common state credits include earned income credits, child tax credits, and credits for the elderly. Consult the Delaware Department of Revenue website or a licensed tax professional for credits specific to your situation and income level.
Use the calculator above. Enter your income and DE is pre-selected as your state. The calculator computes your 2026 federal income tax using the One Big Beautiful Bill Act brackets (10%-37%), adds your estimated Delaware state income tax (6.6% top rate simplified), and displays your total tax burden, combined effective rate, and annual take-home pay. All calculations happen instantly in your browser.