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Delaware Tax Calculator

The Delaware (DE) Tax Calculator is updated for the 2026/27 tax year. It estimates your Delaware state income tax, federal income tax, FICA, and Medicare to show your total tax burden and projected take-home pay. Delaware applies a graduated tax rate ranging from 2.2% to 6.6%, affecting both residents and part-year filers.

Residents, part-year residents, and nonresidents with Delaware income can use this calculator to forecast total tax liability and understand how credits or withholding may affect their refund or balance due.

Quick Access Tools

Quick Delaware Tax Calculator

Enter your gross income and filing status, then click Calculate. Use the advanced tabs to add dependents, retirement plan contributions, itemized deductions, or withholdings. Delaware has no local wage income tax, so only state-level adjustments apply.

Input key: F Used in Federal tax calculations S Used in State tax calculations

Quick Tax Calculation Detailed Tax Calculation
Filing Information Quick Inputs Income Details Deductions & Adjustments State Options IRA, Pensions & Annuities Withholdings

Filing Information

Set your filing status, dependants and personal details so the calculator can apply the correct Federal and State rules.

Quick Inputs

Provide a summary of your income and deductions to calculate your Federal and State tax position quickly.

Income Details

Enter the specific types of income that contribute to your Federal Adjusted Gross Income.

For Schedule B

Deductions & Adjustments

Deductions & Adjustments

Include any adjustments to income that reduce your Federal/State Adjusted Gross Income.

State Options

Some states apply local income taxes in addition to State tax. Enter your local rate if it applies.

IRA, Pensions & Annuities

Enter the details for your retirement contributions and income sources, which are used to compute values on **Form 8606**. This includes contributions to traditional IRAs, 529 savings plans, and rollovers, as well as income from rental properties, farms, unemployment, and other sources. Additionally, provide information on any disaster-related distributions or IRA rollovers you’ve made, and enter your capital gain distributions if applicable. These inputs are essential for accurately calculating your total retirement-related income and determining your tax liabilities or benefits, specifically regarding IRA deductions and distributions as outlined in **Form 8606**.

Withholdings

Enter withheld amounts to calculate refund or balance due.

How to Calculate Income Tax in Delaware for 2026/27

  1. Enter your gross annual income and any adjustments.
  2. Select your filing status (Single, Married Filing Jointly, or Head of Household).
  3. Click Calculate to view your estimated Delaware tax liability, combined with federal tax, FICA, and Medicare.

Advanced Options

  • Compare itemized deductions with the Delaware standard deduction.
  • Include IRA/401(k) contributions to adjust taxable income.
  • Add Delaware-specific credits for dependents or other qualifying expenses.
  • Enter withholdings to estimate your final refund or amount owed.

Related Calculators

Additional Resources

Frequently Asked Questions

Common Delaware tax questions include how the state's graduated tax brackets work, filing options for part-year residents, and available state credits.

Does Delaware have a marriage penalty?

The progressive brackets may result in slight differences for married vs single filers, but Delaware offers adjusted thresholds.

Does Delaware have a flat supplemental withholding rate?

Yes—Delaware provides a flat supplemental withholding percentage for bonuses.

Are Social Security benefits taxed in Delaware?

No—Delaware exempts Social Security benefits from state income tax.

Does Delaware have a personal exemption?

Yes—Delaware allows personal exemptions based on filing status and dependents.

Does Delaware tax inheritances?

No—Delaware repealed its estate and inheritance tax in 2018.

Important Notes

All calculations are estimates for guidance only. Always review your return and consider professional advice when submitting official filings.