Estimate New Jersey take-home pay and employer payroll cost with federal withholding, FICA, New Jersey Gross Income Tax withholding, NJ-W4 rate tables and allowances, employee UI/WF/SWF, Temporary Disability Insurance, Family Leave Insurance, employer UI/TDI/WF/SWF, FUTA, and optional employer load assumptions.
| Tax or contribution | Who pays | 2026 rule used | Calculator treatment |
|---|---|---|---|
| Federal income tax | Employee withholding | IRS Publication 15-T automated percentage method. | Annualizes wages, applies W-4 status, Step 2, Step 3, Step 4(a), Step 4(b), and Step 4(c). Optional supplemental bonus mode uses a 22% federal flat rate. |
| New Jersey Gross Income Tax | Employee withholding | NJ-WT rate tables A through E and per-period allowance values. | Applies the selected NJ-W4 rate table to period wages after allowances, NJ allocation, and taxable wage adjustment. Bonus supplemental mode calculates the bonus portion without NJ allowances. |
| NJ employee UI, WF/SWF, TDI, and FLI | Employee deductions | Standard worker rates: UI 0.3825%, WF/SWF 0.0425%, TDI 0.19%, and FLI 0.23%. | Caps UI and WF/SWF at the $44,800 wage base and caps employee TDI/FLI at the $171,100 wage base using YTD wages before this check. |
| NJ employer UI, TDI, and WF/SWF | Employer | New employer UI 2.6825%, employer TDI 0.50%, and employer WF/SWF 0.1175% defaults, all to the $44,800 wage base. | Uses editable employer rates and YTD wages to estimate wage-base-limited New Jersey employer payroll cost. |
| Local and reciprocal treatment | Employee withholding impact | New Jersey employer guidance notes a Pennsylvania resident exception when the required certificate applies. | No local income tax is added. The PA resident NJ-165 toggle sets New Jersey income tax withholding to $0 while leaving federal and payroll contributions active. |
| FUTA and optional employer load | Employer | FUTA is generally net 0.6% to the first $7,000 when the full state credit applies. | Applies editable FUTA, workers comp, and other employer load percentages for planning-level total employer cost. |
This calculator is a planning estimate, not payroll tax, legal, or accounting advice. New Jersey payroll can differ because of resident/nonresident status, Pennsylvania reciprocity paperwork, convenience-of-employer sourcing, NJ-W4 elections, rate notices, private disability plans, taxable fringe benefits, deduction taxability, multi-state wages, supplemental wage handling, and employer-specific UI experience rates.
Primary references: IRS Publication 15-T, IRS Publication 15, SSA contribution and benefit base, New Jersey employer payroll tax guidance, NJ-WT withholding instructions, NJ Labor annual rate, wage base, and contribution information, NJDOL 2026 benefit-rate release, and NJ Temporary Disability and Family Leave Insurance employer guidance.
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