Delaware Bonus Pay Tax Calculator
Estimate a Delaware employee's net bonus with Delaware's official supplemental-wage methods, federal withholding, FICA, Delaware Paid Leave, optional Wilmington wage tax, employer costs, and net-to-gross planning.
Bonus inputs
Use gross-to-net for a planned taxable cash bonus or net-to-gross for a promised take-home amount. Delaware does not publish a flat bonus rate; its calculation changes with payment presentation.
Delaware withholding settings
No flat Delaware bonus rate. The 6.60% top bracket is not a bonus rate. Separately paid bonuses use the annual-tax difference after adding the bonus once to annualized regular wages; same-pay bonuses use the regular-period combined-payment difference.
Wilmington wage tax settings
Wilmington's wage-tax rate remains 1.25% across calendar 2026; the City's FY2026 and FY2027 budget materials report the same rate. Bonuses and incentive payments are included in earned compensation. The separate employer head tax is not bonus-based and is excluded.
Federal Form W-4 settings
Federal aggregate estimates use the 2026 Publication 15-T automated percentage method for a Form W-4 from 2020 or later. Review older W-4s, nonresident-alien adjustments, exempt status, and special wage facts separately.
Delaware Paid Leave and employer-cost settings
The employee Paid Leave share reduces take-home only when the employer actually passes through that share. Delaware UI, operations and technology, training, FUTA, employer FICA, and the employer Paid Leave portion remain employer costs.
What this calculator includes
Separate payment: add the bonus once to annualized regular wages and subtract annual tax. Same payment: subtract regular-period withholding from withholding on the combined period.
Model eligible 22% and aggregate federal methods, 37% above $1 million, Social Security through $184,500, Medicare, and Additional Medicare above $200,000.
Keep Wilmington and any employee Paid Leave share in take-home while keeping Delaware UI assessments, FUTA, employer FICA, and employer Paid Leave outside it.
This 2026 estimate covers a taxable cash bonus to a W-2 employee. It does not determine DE-W4NR proration, exemption eligibility, private-plan approval, deferred-bonus allocation, or final income-tax liability. Use current employee forms and production payroll records.
Delaware bonus withholding FAQ
Does Delaware have a flat bonus withholding rate?
No. The state guide prescribes difference calculations. The 6.60% top bracket is not a flat bonus rate.
How is a separately paid bonus handled?
Annualize regular wages, calculate annual Delaware tax, add the one-time bonus once, recalculate annual tax, and withhold the difference.
How is a bonus on the regular check handled?
Treat regular wages and the bonus as one payment for that payroll period. The bonus-attributable estimate is combined-period withholding minus regular-period withholding.
Why does Delaware use its own W-4?
Delaware still uses withholding allowances and a $110 credit per allowance. A federal Form W-4 from 2020 or later does not provide the required state allowance count.
Can employees pay part of Delaware Paid Leave?
Yes. An employer is responsible for the contribution but may deduct 0% to 50% of the total cost from covered employees.
Does Delaware unemployment reduce take-home?
No. UI, operations and technology, and training assessments are employer-only. Bonuses count as wages through the annual wage base.
Is Wilmington wage tax included?
Yes, when selected. The rate remains 1.25% across calendar 2026 for residents' earned income and for nonresident compensation attributable to work in Wilmington.
Can the calculator gross up a promised net bonus?
Yes. Net-to-gross mode solves against the selected federal method, Delaware withholding, Wilmington wage tax, FICA, and any employee Paid Leave share.
Research sources
Primary official material was checked on July 29, 2026. Recheck the employee's current DE-W4 or DE-W4NR, Wilmington nexus, the employer's assigned UI rate and Paid Leave plan, annual wage bases, and federal updates before production payroll. The TimeTrex Delaware payroll page is a convenience CTA, not a formula source.
Move from a bonus estimate to a complete Delaware paycheck
Use the TimeTrex Delaware payroll calculator for a broader paycheck estimate, then verify current employee forms and assigned employer rates before production payroll.
