Delaware Income Tax Calculator
Delaware's top marginal state income tax rate is 6.60%. This calculator combines federal and state brackets to estimate your total liability.
Delaware Income Tax in 2026
Delaware uses a progressive income tax with a top marginal rate of 6.60%. That rate kicks in at higher income levels; most filers fall into a lower effective bracket. Lower-income households often pay an effective state rate of 2–4%.
Combined with federal tax (10%–37%), Social Security (6.2% up to the wage base) and Medicare (1.45%), the all-in federal+state tax bite for Delaware residents at $100k gross typically lands in the 25%–32% effective range, depending on deductions.
Federal + State Tax at Common Income Levels (Delaware, single filer)
| Gross Income | Federal Tax | State Tax | Take-Home |
|---|---|---|---|
| $40,000 | $2,816 | $1,090 | $36,094 |
| $60,000 | $5,216 | $1,948 | $52,836 |
| $80,000 | $9,441 | $2,806 | $67,753 |
| $100,000 | $13,841 | $3,664 | $82,495 |
| $150,000 | $25,539 | $5,809 | $118,653 |
| $200,000 | $37,539 | $7,954 | $154,508 |
| $300,000 | $70,265 | $12,244 | $217,492 |
Estimates only — assumes standard deduction, no credits, no FICA. Consult a CPA for filing decisions.