- NJ income tax runs 1.4% to 10.75% across 7 brackets — Form NJ-W4 required, not the federal W-4
- SDI and FLI are employee-paid deductions you collect and remit; UI is employer-paid at 2.8% for new employers
- Most small NJ employers file Form NJ-927 quarterly — due Jan 30, Apr 30, Jul 30, Oct 30
- Annual reconciliation via NJ-W-3 is due February 15 every year
New Jersey payroll tax is the most demanding state payroll obligation in the country. Not an exaggeration. You're not just withholding state income tax — you're collecting two separate employee-funded insurance programs and paying unemployment out of your own pocket. Four programs. Multiple forms. Quarterly deadlines with no grace period. If you run a small business in NJ with even one employee, here's exactly what you owe.
NJ State Income Tax Withholding: 7 Brackets, One Important Form
New Jersey's graduated income tax spans seven brackets. The withholding math follows NJ's own rate table — not the federal one. That distinction matters more than most employers realize, because it means every employee needs to complete Form NJ-W4, the state's withholding certificate — a separate document from the federal W-4.
| Taxable Income Range | 2026 Rate |
|---|---|
| $0 – $20,000 | 1.4% |
| $20,001 – $35,000 | 1.75% |
| $35,001 – $40,000 | 3.5% |
| $40,001 – $75,000 | 5.525% |
| $75,001 – $500,000 | 6.37% |
| $500,001 – $1,000,000 | 8.97% |
| Over $1,000,000 | 10.75% |
Supplemental wages — bonuses, commissions, severance — get a flat 21.3% withholding rate (NJ Publication NJ-WT, 2026). No bracket math required; just apply it to any payment that isn't regular wages. Your NJ-compliant pay stubs should reflect this separately from regular wage withholding so there's no ambiguity at year-end.
Employees must complete NJ-W4 separately from the federal W-4. Using only the federal form is a compliance error — and the NJ Division of Taxation can penalize employers who fail to collect it.
SDI, FLI, and UI: The Contributions That Trip Most NJ Employers Up
Here's where New Jersey truly diverges from most states. Three separate insurance programs sit on top of income tax withholding — two funded entirely by employees, one by you.
| Program | Who Pays | 2026 Rate | Wage Base |
|---|---|---|---|
| SDI (State Disability Insurance) | Employee | ~0.14%* | $161,400 |
| FLI (Family Leave Insurance) | Employee | ~0.09%* | $161,400 |
| UI (Unemployment Insurance) | Employer | 2.8% (new); 0.4%–5.4% (experienced) | $42,300* |
*SDI and FLI rates are set annually by the NJ Department of Labor. UI wage base is published each year by the NJ DOL — $42,300 reflects the most recently published figure. Verify confirmed 2026 figures at nj.gov/labor before your first payroll run.
NJ employers remit SDI and FLI on the same form — NJ-927 — every quarter. One filing, both programs covered.
A common mistake: assuming SDI is an employer expense and booking it to operating costs. It's not. It comes out of employee wages. One Trenton plumbing contractor discovered this the hard way — six months of pay stubs needed correcting before his books were clean.
New Jersey is one of only a handful of states with mandatory paid family leave funded entirely through employee payroll deductions. Employers don't contribute to FLI — but they are legally required to withhold it and remit it every quarter.
How to Actually File: Deadlines and Remittance Frequency
Registration comes first — before the first paycheck clears. Here's the sequence.
- 1 Register with the NJ Division of Revenue — online through the NJBIZ portal, before your first payroll run.
- 2 Obtain your NJ-WT employer withholding ID — required on every filing going forward.
- 3 Collect NJ-W4 from every employee — at hire, and again whenever their withholding situation changes.
- 4 Withhold NJ income tax, SDI, and FLI from every paycheck and track running totals through each quarter.
- 5 Remit using Form NJ-927 quarterly (or NJ-927W if monthly liability exceeds the threshold).
- 6 File Form NJ-W-3 annual reconciliation by February 15 each year.
Filing frequency thresholds: Monthly withholding under $500 means quarterly filing. Between $500 and $10,000 per month, you remit monthly. Over $10,000 per month puts you on a semi-weekly schedule. Bookmark the NJ payroll tax deadline calendar now — most small businesses land firmly in the quarterly bucket and a missed date triggers both penalties and interest.
Most micro-businesses with 1–10 employees file Form NJ-927 quarterly. Set calendar reminders now for January 30, April 30, July 30, and October 30. Missed deadlines trigger both penalties and interest — NJ doesn't issue grace periods.
Frequently Asked Questions
What is the New Jersey SDI rate for 2026?
The NJ SDI employee contribution rate applies to wages up to $161,400 and is typically set between 0.10%–0.16% — confirm the exact current figure at nj.gov/labor before processing payroll. Employers withhold SDI from employee paychecks and remit it quarterly on Form NJ-927.
Does New Jersey require a separate state W-4?
Yes — employees must complete Form NJ-W4 for state income tax withholding, entirely separate from the federal W-4. The NJ Division of Taxation can assess penalties against employers who fail to collect it.
How often do small NJ employers remit payroll taxes?
Most NJ micro-businesses remit quarterly via Form NJ-927, due January 30, April 30, July 30, and October 30. Monthly withholding over $500 triggers monthly remittance; over $10,000 per month means semi-weekly filing.
What are the penalties for missing NJ-927 deadlines?
Late NJ-927 filings incur a penalty of 5% of the tax due per month (up to 25%), plus interest accruing from the original due date — there is no grace period. Filing on time even if you can't pay in full reduces the penalty exposure significantly.
Do NJ household employers have the same payroll tax obligations?
Household employers (nannies, housekeepers) who pay $1,000 or more in wages per quarter are subject to NJ UI contributions and must register with the NJ DOL — though they typically file on an annual rather than quarterly schedule. SDI and FLI withholding rules apply the same way as for any other employer.
New Jersey payroll demands more setup than any other state — three programs, multiple forms, four annual deadlines. Get registered, lock in your remittance schedule, and the ongoing work is manageable. The forms are the hard part. Get them right once and you're done.
Need NJ-compliant pay stubs that correctly show SDI, FLI, and state tax deductions?
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