Yes, New Jersey has a state income tax, and it applies to most residents and workers
New Jersey taxes income earned within the state and income earned by state residents no matter where they work. The state uses a progressive tax system, meaning the rate increases as your income rises. Unlike some states that have no income tax at all, New Jersey residents pay state tax on wages, self-employment income, investment gains, and other earnings.
The tax is separate from federal income tax. You file both a federal return to the IRS and a state return to the New Jersey Division of Taxation. The state tax you owe does not reduce your federal tax, and vice versa — they are calculated independently.
Key Takeaways
- New Jersey has a progressive income tax with rates ranging from 1.4% to 10.75%, depending on your income level and filing status.
- You must file a state return if you earned income in New Jersey or lived there as a resident, even if you owe no tax.
- State income tax is withheld from paychecks by employers, similar to federal withholding, but the amounts are separate.
- New Jersey offers tax credits for certain situations — such as property tax relief, child care costs, and earned income — that can reduce what you owe.
- The state taxes capital gains as ordinary income, so investment profits are taxed at the same rates as wages.
How New Jersey's tax brackets work
New Jersey's income tax brackets change each year based on inflation. For the 2024 tax year, the state has six tax brackets for single filers, ranging from 1.4% on the lowest income to 10.75% on income above a certain threshold. Married couples filing jointly have different bracket thresholds, as do head-of-household filers.
The brackets mean you do not pay the top rate on all your income — only on the portion that falls within each bracket. For example, if you are single and earn $60,000, you pay 1.4% on the first portion, then 1.75% on the next portion, and so on, until you reach the bracket your total income falls into. This is different from a flat tax, where everyone pays the same percentage regardless of income level.
Because brackets adjust annually, your tax bill can change even if your income stays the same. The New Jersey Division of Taxation publishes updated brackets each January on its website, and most tax software updates automatically.
Who must file a New Jersey state return
You must file a state return if you are a New Jersey resident with income above a certain threshold, or if you earned income within New Jersey even if you do not live there. The income threshold depends on your age and filing status — it is higher for people over 65 and varies between single, married, and head-of-household filers.
Even if your income falls below the filing threshold, you may want to file anyway. If your employer withheld state tax from your paychecks, filing allows you to claim a refund of any overpayment. You also need to file to claim certain tax credits, such as the Earned Income Tax Credit or property tax relief, which can result in a refund even if you owe no tax.
New Jersey residents who move out of state during the year are considered part-year residents and must file a state return for the months they lived in New Jersey. The state provides a part-year resident form to calculate your tax on only the income earned while you were a resident.
State income tax withholding from your paycheck
Your employer withholds New Jersey state income tax from your paycheck, separate from federal withholding. The amount withheld depends on the W-4 form you complete with your employer, which asks about your filing status, number of dependents, and other income sources. If you do not complete a W-4, your employer withholds at a default rate, which is often higher than what you actually owe.
You can adjust your withholding at any time by submitting a new W-4 to your employer's payroll department. If you expect to owe money at tax time, you can increase your withholding. If you expect a large refund, you can decrease it. The goal is to have the right amount withheld so you do not overpay or underpay during the year.
Self-employed people and those with income not subject to withholding must make quarterly estimated tax payments to New Jersey. These are due in April, June, September, and January, and the amounts are based on your expected annual income and tax liability.
Tax credits that reduce what you owe
New Jersey offers several credits that directly reduce your state tax bill. The Earned Income Tax Credit is available to low- and moderate-income workers and can result in a refund even if you owe no tax. The Property Tax Reimbursement credit helps homeowners and renters with property tax or rent burden. The Dependent Care information credit covers costs of childcare or adult care while you work.
Credits are different from deductions. A deduction reduces your taxable income, while a credit directly reduces the tax you owe, dollar for dollar. A $1,000 credit saves you $1,000 in tax; a $1,000 deduction saves you tax only at your marginal rate. Because credits are more valuable, it is worth checking whether you may have access to for any before you file.
You claim credits on your state return using specific forms. The New Jersey Division of Taxation website lists all available credits and the forms needed for each one. Some credits require documentation — for example, the childcare credit requires the provider's tax identification number.
How capital gains and investment income are taxed
New Jersey taxes capital gains — profits from selling stocks, bonds, real estate, or other investments — as ordinary income at your regular tax rate. This is different from the federal system, where long-term capital gains may be taxed at lower rates. If you sell an investment and make a $10,000 profit, that $10,000 is added to your income and taxed at your marginal rate, which could be as high as 10.75%.
Dividends from stocks and mutual funds are also taxed as ordinary income in New Jersey. Interest income from savings accounts, bonds, and CDs is taxed the same way. This means investment income is not treated more favorably than wage income at the state level, even though it may be at the federal level.
If you have significant investment income, you may want to coordinate your federal and state tax planning. A strategy that reduces your federal tax on capital gains may not reduce your state tax, so the overall benefit is smaller than it appears on your federal return alone.
Filing important date and where to file
New Jersey's tax filing important date is the same as the federal important date: April 15 of the year following the tax year. If April 15 falls on a weekend or holiday, the important date moves to the next business day. You can request an automatic six-month extension by filing Form NJ-630 by the important date, which gives you until October 15 to file your return.
You file your New Jersey return with the Division of Taxation, not with your local tax assessor or municipality. You can file by mail, electronically through the state's online system, or through tax software that supports New Jersey returns. Electronic filing is faster and reduces errors — the state processes e-filed returns more quickly than paper returns.
If you file a federal extension, you do not automatically get a state extension. You must file the state extension form separately, even if you have already filed a federal extension. Failing to file by the important date, even if you are owed a refund, can result in penalties and interest on any tax owed.
Frequently Asked Questions
Do I owe New Jersey tax if I work in New Jersey but live in another state?
Yes. New Jersey taxes income earned within the state, regardless of where you live. You file a New Jersey return as a nonresident and report only the income you earned in New Jersey. You also file a return in your home state. Some states offer credits for taxes paid to other states to prevent double taxation, so check your home state's rules.
What is the difference between New Jersey state tax and federal income tax?
Federal tax goes to the IRS and funds national programs. New Jersey state tax goes to the state and funds state programs, schools, and infrastructure. They are calculated separately using different brackets, rules, and credits. You file both returns, and neither one reduces the other.
Can I deduct federal taxes paid from my New Jersey state income?
No. New Jersey does not allow a deduction for federal income taxes paid. Some states do; New Jersey does not. You calculate your New Jersey tax on your federal taxable income, but you cannot reduce it by subtracting what you paid to the IRS.
What happens if I do not file a New Jersey return when I should have?
The state can assess penalties and interest on any tax owed, and the penalties increase the longer you wait. If you are owed a refund, you generally have three years to file and claim it; after that, the refund is forfeited. If you missed a important date, filing as soon as possible limits the penalties.
Does New Jersey tax retirement income differently?
New Jersey excludes certain retirement income from taxation. Military pensions, federal pensions, and some other government pensions are fully excluded. Social Security benefits are not taxed by New Jersey. However, distributions from IRAs, 401(k)s, and other retirement accounts are taxed as ordinary income unless they may have access to for an exclusion.