Comprehensive statutory analysis of Delaware individual income tax rates, Department of Revenue filing forms, extension guidelines, telecommuting sourcing rules, and pass-through entity tax provisions.
Primary Resident FormForm 200-01 (Resident Individual Income Tax Return)
Nonresident FormForm 200-02 (Nonresident Individual Income Tax Return)
Convenience of Employer RuleYes (Strict)
Reciprocity AgreementsNone
Community Property StateCommon Law
State Estate/Inheritance TaxNone (Federal Only)
QSBS IRC § 1202 ConformityState Specific / Under Review
Marginal Rate Ladder: Delaware
Source: Tax Foundation — State Individual Income Tax Rates and Brackets, 2026 (retrieved 2026-08-09). Ranks Delaware against all 51 jurisdictions.
2026 Legislative & Statutory Highlights
Delaware enforces a 6-bracket progressive income tax system with a top marginal rate of 6.60% applying to taxable income over $60,000. Unlike most states, Delaware sets its individual income tax filing deadline on April 30 rather than April 15. Delaware imposes no state sales tax.
Delaware operates a graduated personal income tax schedule with marginal brackets reaching up to 6.6%. Tax parameters are indexed annually or enacted through state legislative sessions. Taxpayers should ensure that adjustments for federal bonus depreciation, Section 179 expensing, and Net Operating Loss (NOL) carryforwards follow Delaware's specific rolling or static Internal Revenue Code conformity date.
Filing Forms, Deadlines & Extension Guidelines
Full-Year Resident ReturnForm 200-01 (Resident Individual Income Tax Return)
Nonresident / Part-Year ReturnForm 200-02 (Nonresident Individual Income Tax Return)
Statutory Filing Calendar & Extension Provisions:Delaware grants an extension to October 15 via Form 1027, provided payment is submitted by April 30.
Delaware enforces the 'Convenience of the Employer' rule. Nonresidents working remotely for Delaware employers are subject to Delaware income tax on their telecommuting wages unless their remote work arrangement is an absolute business necessity dictated by the employer.
Cross-Border Tax Credits:If you are an Delaware resident earning wages in another state that also levies income tax, Delaware generally permits a resident credit for taxes paid to other jurisdictions (subject to statutory percentage limitations) to avoid unconstitutional double taxation.
Pass-Through Entity (PTE) Tax & Small Business Rules
Delaware permits pass-through entities to elect to pay Delaware income tax at the entity level at the top individual rate, shielding federal deductions for business owners.
Estate & Inheritance Tax
Delaware has no state estate tax and no inheritance tax (state estate tax was permanently repealed in 2018).
Local & County Taxes
The City of Wilmington imposes a 1.25% municipal earned income tax on residents and nonresidents working within the city limits.
Worked Tax Example: $120,000 W-2 Earner in Delaware
A single taxpayer in Delaware earning $120,000 pays approximately $6,120 in state income tax under Delaware graduated brackets, reflecting an effective state tax burden of 5.10%.
Gross W-2 Wages$120,000
Est. State Tax$6,120
Effective State Rate5.10%
Calculate Your 2026 Delaware Tax Liability
Enter your taxable income, filing status, and municipal details below to calculate your customized state tax liability and print your executive summary.
Structure
graduated
Top rate
6.6%
State tax
$4,297
Eff. rate (state+local)
5.4%
Graduated system, top marginal ~6.60% (Tax Foundation). Exact 2026 bracket thresholds inflation-indexed — verify against DE DOR before relying. Convenience-of-employer rule state.
⚠ Some figures for this state are not yet fully verified — confirm with the state Department of Revenue before relying on them.
Official Executive Tax Dossier · Form 1040 Statutory Mapping
2026 Executive Delaware State Tax Audit Summary
STATUTORY SEAL:FT-2026-IRS-13E12219IRS Rev. Proc. 2025-32 Verified
Gross Income$80,000
Taxable Income$80,000
Total Combined Tax$4,297
Effective Total Rate5.4%
Statutory Governing Authority: Delaware Department of Revenue Statutory Tax Code · Top Marginal Rate: 6.6% · Tax Foundation 2026 State Tax Rates & Brackets Report
Not tax, legal, or financial advice
FiscTalk provides general educational information from public sources. Your tax results depend on the full set of facts, your filing history, and the jurisdiction-specific rules that shift yearly. Before filing or making decisions, consult a licensed CPA, EA, or attorney. FiscTalk is not a fiduciary and is not affiliated with the IRS or any state agency.
Does Delaware have a state personal income tax in 2026?
Yes. Delaware operates a graduated personal income tax schedule with marginal brackets reaching up to 6.6%. Taxpayers must file an annual return if gross income exceeds statutory filing thresholds.
What is the 2026 individual income tax filing deadline for Delaware?
The regular filing deadline for Delaware individual income tax returns is April 30, 2026 (Unique Delaware statutory deadline). Taxpayers seeking an extension may receive up to 6 additional months to file, but any tentative tax due must be paid by the original deadline to prevent late-payment interest and statutory penalties.
How does Delaware treat remote workers and telecommuters?
Delaware enforces the 'Convenience of the Employer' rule. Nonresidents working remotely for Delaware employers are subject to Delaware income tax on their telecommuting wages unless their remote work arrangement is an absolute business necessity dictated by the employer.
Can small business owners in Delaware bypass the federal $10,000 SALT cap?
Delaware permits pass-through entities to elect to pay Delaware income tax at the entity level at the top individual rate, shielding federal deductions for business owners.
Does Delaware impose a separate estate or inheritance tax?
Delaware has no state estate tax and no inheritance tax (state estate tax was permanently repealed in 2018).
Source-verified — not professional advice
Every figure on this page is checked in-house against its primary source — IRS revenue procedures and publications, state Departments of Revenue, and the text of the underlying statute — before publication. Last reviewed 2026-10-20. The full source list is at the bottom of this page. If you spot an error, see our corrections & standards policy.
Not tax, legal, or financial advice
FiscTalk provides general educational information from public sources. Your tax results depend on the full set of facts, your filing history, and the jurisdiction-specific rules that shift yearly. Before filing or making decisions, consult a licensed CPA, EA, or attorney. FiscTalk is not a fiduciary and is not affiliated with the IRS or any state agency.