New Jersey tax filing: file NJ state taxes online, Form NJ-1040, deadlines and requirements

Do you have to file a New Jersey tax return?

New Jersey uses a gross income test, and it is simpler than California's two-number system. You must file a resident return if your gross income for 2025 was more than the threshold for your filing status:

Gross income here is New Jersey gross income, which is not identical to the federal figure. New Jersey does not tax Social Security benefits, most pensions below the retirement exclusion, unemployment compensation, or New Jersey municipal bond interest, so some income counted on your federal return drops out before you test against these numbers.

Reasons to file even under the threshold

• Withholding on your W-2. If New Jersey tax came out of your paychecks and you owe nothing, filing is the only way to get it back.
• The NJ Earned Income Tax Credit. New Jersey pays a refundable credit worth 40 percent of the federal EITC, and it requires a filed return.
• Self-employment income. Contractors reporting Schedule C income often clear the gross income threshold on receipts alone.

The current requirements are published by the New Jersey Division of Taxation.

Form NJ-1040 or NJ-1040NR

New Jersey has two personal income tax returns, and residency decides which one you file.

1. Form NJ-1040, Resident Income Tax Return. For anyone who was a New Jersey resident for the full year. It handles the exemptions, the property tax deduction or credit, and every income category the state taxes.
2. Form NJ-1040NR, Nonresident Return. For people who lived outside New Jersey but earned New Jersey-source income, and for part-year residents allocating income between the time they lived in the state and the time they did not.

If you moved into or out of New Jersey during 2025, you may file a part-year resident NJ-1040 for the resident portion and an NJ-1040NR for the nonresident portion, depending on where the income was earned. New Jersey and Pennsylvania have a reciprocal agreement, so a New Jersey resident who works in Pennsylvania is taxed only by New Jersey on those wages, and the reverse holds for Pennsylvania residents working in New Jersey. Our state tax filing pillar lists the full reciprocity map.

E-filing is the practical default. Paper returns to the Division of Taxation process more slowly and refunds follow the same pace. The online tax filing walkthrough covers what happens between upload and acceptance.

New Jersey tax filing deadline and the 80 percent extension rule

New Jersey's extension has a condition the federal one does not. You get six more months to file, but only if you have already paid at least 80 percent of your total 2025 tax liability by April 15, 2026. Miss that threshold and New Jersey treats the return as late, with a late-filing penalty on top of interest, even if you filed an extension.

You do not need a separate New Jersey form if you have a valid federal extension and expect no New Jersey balance due. If you owe and are extending, or you have no federal extension, file Form NJ-630 by April 15 and pay enough to reach the 80 percent mark. The extension moves the filing date only. Interest on any unpaid balance runs from April 15 regardless.

The federal side follows different rules, so do not assume one extension covers the other. Our guide to filing a federal tax extension explains Form 4868, and when taxes are due lays out the full 2026 calendar including quarterly estimated payments.

New Jersey tax rates, brackets and exemptions

New Jersey is a graduated-rate state. Rates on the 2025 schedule run from 1.4 percent to 10.75 percent, and only the income inside each band is taxed at that band's rate. Single filers move through seven brackets; married couples filing jointly run through eight, because the state splits the lowest band differently for joint returns. The top 10.75 percent rate applies to taxable income above $1 million for every filing status.

The bigger surprise is what New Jersey does not give you. There is no standard deduction. In its place you claim fixed exemptions: $1,000 for yourself, $1,000 for a spouse or civil union partner, $1,500 for each dependent, and additional $1,000 amounts if you or your spouse are 65 or older, blind, or totally disabled. A dependent under 22 attending college full-time adds another $1,000. New Jersey does allow a limited set of deductions, most notably the property tax deduction (or a refundable credit) and medical expenses above 2 percent of gross income, but nothing resembling the federal standard deduction.

Current rate schedules are posted on the Division of Taxation site. For a rough sense of where your federal return lands first, the tax refund calculator gives you a quick estimate.

Filing your New Jersey return online with TaxFile

The friction in New Jersey filing is that the state starts from federal numbers but taxes a different set of income, so doing the two returns separately means reconciling every difference by hand. TaxFile builds both from one pass.

• Upload or talk. Drop in your W-2s and 1099s and it reads them, or describe your year in plain language and it asks what it still needs.
• Federal and New Jersey prepared together. One set of documents produces both returns, with the New Jersey figures carried through consistently.
• Exemptions and credits checked. It applies your exemptions and looks for credits such as the New Jersey Earned Income Tax Credit and the property tax benefit.
• Error check before anything moves. Inconsistencies get flagged so they are fixed before submission, not after a notice from Trenton.
• You approve, then it files. E-filing happens through an authorized IRS e-file provider only after you review and approve every line.

Pricing is $39 for a simple return, $89 for self-employed, $199 for business, plus $19 for each state return. There is no free tier. If your New Jersey income comes from contract or freelance work, self-employed tax filing covers the Schedule C and Schedule SE side in more detail.

Two limits worth stating plainly. TaxFile does not e-file Form 4868 federal extensions and does not prepare amended returns, and it does not currently handle capital gains on Schedule D, rental income on Schedule E, or cryptocurrency. If your year includes any of those, a CPA is the right call. TaxFile is self-prepared tax software and does not provide personalized tax, legal or accounting advice, and no refund amount is ever guaranteed.