Delaware Payroll Taxes: 2026 Employer Guide
Quick Facts
Key payroll tax details at a glance.
State Income Tax
Progressive (up to 6.60%)
SUI New Employer Rate
1.0%
SUI Wage Base
$14,500 per employee
SUI Rate Range
0.3% to 5.4%
Employee SUI Contribution
No
Local Taxes
Yes (Low complexity)
Overview: Delaware Payroll Landscape
Delaware is a popular state of incorporation for startups, but payroll is a separate matter from corporate registration. If you have employees working in Delaware, you will need to handle the state's progressive income tax, unemployment insurance, and (potentially) the Wilmington city earned income tax.
Delaware uses the federal W-4 for state purposes, which simplifies onboarding. The SUI wage base of $14,500 is moderate, and the new employer rate of 1.0% is one of the lowest in the country. This guide covers everything you need to stay compliant.
Delaware State Income Tax
Withholding rates, brackets, and forms.
Tax Type
Progressive
Top Rate
6.60%
Withholding Form
Federal W-4
Delaware Unemployment Insurance (SUI)
Employer rates, wage bases, and contribution details.
New Employer Rate
1.0%
Wage Base
$14,500 per employee
Rate Range
0.3% to 5.4%
Employee Contribution
—
Delaware SUI (State Unemployment Insurance) is an employer-paid tax that funds unemployment benefits for workers who lose their jobs. It is administered by the Delaware Department of Labor, Division of Unemployment Insurance. Registration: Employers must register with the Delaware Department of Labor, Division of Unemployment Insurance as soon as they hire their first Delaware employee. Registration can be completed online.
Delaware Local Taxes
City and county-level tax obligations.
Complexity
Low
Wilmington imposes a 1.25% Earned Income Tax on wages earned within city limits.
Delaware Compliance Checklist
Deadlines, filing requirements, and official resources.
Key Deadlines
Withholding deposits
Due Varies by liability
Quarterly returns (Q1)
Due April 30
Quarterly returns (Q2)
Due July 31
Quarterly returns (Q3)
Due October 31
Quarterly returns (Q4)
Due January 31
Annual reconciliation
Due January 31
W-2 state copies
Due January 31
New hire report
Due Within 20 days of start date
How Warp Handles Delaware Payroll
Warp is the only AI-native HR & Payroll platform built for ambitious companies. Instead of clicking through clunky dashboards or Delaware's .gov websites for taxes, Warp's AI agents open your Delaware tax accounts, file every payroll form, and resolve every tax notice automatically.
What Warp handles for Delaware employers:
- Delaware tax account registration and setup
- Automated income tax withholding calculations and deposits
- SUI registration and quarterly filings
- Annual W-2 and reconciliation filing
- Tax notice resolution directly with Delaware agencies, so you never spend hours on hold
Every Warp customer gets a dedicated Account Manager and Benefits Advisor included to guide them through payroll setup, multi-state expansion, and benefits selection.
If you don't want to deal with navigating Delaware .gov portals, check out a demo of Warp to see how we can help you stop worrying about compliance and get back to building.
Tax data last verified: March 12, 2026