How to Pay Your New Jersey State Income Tax
Where and how to pay New Jersey income tax
New Jersey collects state income tax through the Division of Taxation. You can pay what you owe through several routes: online through the state's payment portal, by mail with a check, by phone, or through your bank's bill-pay system. The state does not charge a fee for online payments made directly through its website, though third-party payment processors may add their own fees.
The most common payment method is online at nj.gov/treasury/taxation. You will need your Social Security number, the amount you are paying, and a bank account or debit card. Payments submitted online are typically processed the same day if made before 8 p.m. Eastern time. If you mail a check, address it to the New Jersey Division of Taxation and include your Social Security number on the check itself—mail takes 7 to 10 business days to arrive and clear.
Phone payments are also available through the state's automated system, though you will pay a convenience fee for this method. Your bank's bill-pay system can work too, but you must set it up to send the payment to the Division of Taxation's address, and you should allow extra time for processing.
Key Takeaways
- You can pay online at nj.gov/treasury/taxation with no state fee, by mail with a check, or through your bank's bill-pay system.
- Online payments made before 8 p.m. Eastern time are processed the same day; mailed checks take 7 to 10 business days.
- If you owe tax when you file, you can pay at the time of filing through the state's online tax filing system.
- Payments made after the tax deadline (April 15 unless extended) will accrue interest and penalties, even if you filed on time.
- The state offers a payment plan for larger amounts owed; you must request this before the deadline or shortly after.
Paying tax when you file your return
If you file your New Jersey income tax return online through the state's system or through a tax software provider, you can pay the amount due at the same time you submit your return. The state accepts electronic payments directly from your bank account (ACH transfer) or from a debit card. This is often the simplest route because the payment and the return are linked in the state's records.
When you file by mail, you must include a check with your return. Write your Social Security number on the check and mail both together to the Division of Taxation. The state will not process your return as complete until the payment arrives, so mailing both together ensures they are matched in the system.
Payment deadlines and what happens if you pay late
New Jersey income tax returns are due on April 15 each year, the same as federal tax. If you file for an extension, your return is due by October 15, but your payment is still due by April 15. Paying after April 15 triggers interest and penalties even if you filed an extension and your return is not yet due.
Interest accrues at a rate set by the state each quarter; it compounds daily. Penalties for late payment are typically 5 percent of the unpaid tax if you pay between one and 30 days late, and 10 percent if you pay more than 30 days late. These penalties are separate from the interest charge. If you cannot pay by April 15, paying something by the deadline—even a partial payment—can reduce the penalty.
If you owe a large amount and cannot pay in full, the state may allow you to set up a payment plan. You must request this before the deadline or within a short window after. Contact the Division of Taxation directly to discuss your situation; waiting until a notice arrives makes the process slower.
Estimated tax payments for self-employed and business owners
If you are self-employed or have income that is not subject to withholding, New Jersey requires you to make estimated tax payments four times a year. These are due on April 15, June 15, September 15, and January 15 of the following year. Each payment covers roughly one quarter of your expected annual tax liability.
You can pay estimated taxes online through the state's portal, by mail, or through your bank. The state provides a worksheet to help you calculate what you owe, though many self-employed people work with a tax preparer or accountant to get the amount right. Underpaying estimated taxes can result in penalties, even if you ultimately owe nothing when you file your annual return.
What to do if you receive a tax bill or notice
If the Division of Taxation sends you a bill or notice of tax due, the letter will include a due date and payment instructions. Pay by that date to avoid additional penalties. If you disagree with the amount, you can file a protest or request a hearing, but you should still pay by the deadline to stop interest from accruing while your case is reviewed.
If you cannot pay the full amount by the due date on the notice, contact the Division of Taxation before the deadline to discuss a payment plan or other options. The state is more likely to work with you if you reach out first rather than ignoring the notice.
Setting up automatic payments and payment plans
The Division of Taxation does not offer automatic recurring payments for income tax the way some states do. However, you can set up a one-time automatic payment through your bank's bill-pay system or through the state's online portal each time you owe tax.
If you owe a substantial amount and cannot pay in full, you can request an installment agreement. The state typically allows payment plans of up to 24 months for amounts over a certain threshold, though interest and penalties continue to accrue during the plan period. You must request the plan before or shortly after the payment deadline; the state will not set one up retroactively after enforcement action has begun.
Frequently Asked Questions
Can I pay my New Jersey income tax through a credit card?
The state does not accept credit card payments directly through its website. However, third-party payment processors that accept credit cards may be available; these typically charge a convenience fee of 2 to 3 percent. Check nj.gov/treasury/taxation for current third-party options.
What if I filed an extension but still can't pay by April 15?
An extension gives you until October 15 to file your return, but your payment is due April 15 regardless. If you cannot pay by then, contact the Division of Taxation before April 15 to request a payment plan. Paying late without a plan will result in interest and penalties.
Do I need to include anything with my check payment besides the check itself?
Write your Social Security number on the check and include a copy of your tax return or a note with your name, address, and the tax year you are paying for. Mail everything to the Division of Taxation address listed on the state's website. This helps the state match your payment to your account.
What happens if I pay too much?
If you overpay, the state will either refund the excess or allow you to apply it to next year's tax. You can choose which option you prefer when you file your return or contact the Division of Taxation to request a refund.
Can I pay someone else's New Jersey tax bill?
Yes, you can pay on behalf of another person if you have their Social Security number and know the amount owed. However, the payment must be clearly marked with their name and Social Security number so the state credits it to the correct account. It is safer to have the person pay directly or to contact the Division of Taxation first to confirm the amount.