Delaware income tax
DEDelaware uses a progressive income tax structure with 7 brackets and a top marginal rate of 6.60%.
- Top marginal rate
- 6.60%
- Brackets
- 7
- Structure
- Progressive — multiple brackets
- Last legislated change
- 2014
Source: https://revenue.delaware.gov/. Last reconciled 2026-05-03.
Coming in v0.2
Full Delaware income tax calculator
We're building per-state take-home calculators that account for every bracket, deduction, and local levy. For v0.1 we're shipping the top-marginal summary and source link only. Honest: we'd rather ship one polished mortgage calculator and an accurate state tax index than fake calculators for all 50 states.