Mail payment works by sending a check or money order directly to the New Jersey Department of the Treasury
You can pay your New Jersey state income tax by mail using a personal check or money order. The state does not process credit cards or electronic transfers through the mail — those methods require online or phone payment instead. Mail payment takes longer to reach the state than electronic methods, so you need to send it well before the tax important date to avoid a late penalty.
The mail address where you send payment depends on whether you are paying with your tax return or paying separately. Both addresses are listed on the New Jersey Department of the Treasury website and on your tax forms. If you are mailing your return and payment together, use the address printed on your return instructions.
Payment by mail is useful if you do not have internet access, prefer not to use online systems, or want a paper record of your payment. However, the state receives mail slowly, and postmarks do not count as payment dates — only the date the state receives your envelope matters for penalty purposes.
Key Takeaways
- Mail payments must be sent as a check or money order; credit cards and electronic transfers are not accepted by mail.
- You must send your payment to the correct address based on whether you are mailing it with your return or separately.
- The state considers your payment received on the date it arrives at the Treasury office, not the date you mailed it or the postmark date.
- Mail payments take one to two weeks to process, so send yours at least two weeks before the tax important date to avoid late penalties.
- Include your Social Security number or federal employer identification number on your check or money order so the state can match it to your account.
What to write on your check or money order
Write the check or money order payable to "State of New Jersey." On the memo line, write your Social Security number or federal employer identification number — this is how the state matches your payment to your tax account. If you are paying for a specific tax year, you can also note the year on the memo line.
Do not send cash by mail. Cash cannot be tracked if it is lost, and the state will have no record of your payment. A check or money order creates a paper trail that protects you if the payment goes missing in the mail.
Make sure your check or money order is signed and dated. An unsigned check will be rejected and returned to you, which delays your payment and may result in a late penalty if the important date passes while you are resubmitting it.
Where to mail your payment
The mailing address depends on whether you are sending your payment with your tax return or paying a balance you already owe. If you are filing your return and paying at the same time, the address is printed in your return instructions booklet. If you are paying a balance separately — for example, because you filed electronically but owe additional tax — use the address for payments only.
The New Jersey Department of the Treasury publishes both addresses on its website under "Where to File" or "Payment Methods." Double-check the address before you mail your envelope, because sending payment to the wrong address delays processing and may cause the state to record your payment late.
If you are unsure which address to use, call the New Jersey Department of the Treasury at 609-292-6400 during business hours. They can confirm the correct mailing address for your situation.
How long mail payment takes to process
Mail typically takes one to two weeks to reach the New Jersey Department of the Treasury, depending on where you are mailing from and postal service delays. Once the state receives your envelope, it may take another week to process and post your payment to your account. Plan to mail your payment at least two to three weeks before the tax important date to may support it arrives and is recorded on time.
The state considers your payment received on the date it arrives at the Treasury office, not the postmark date. If your payment arrives after the important date, you will owe a late penalty even if you mailed it before the important date. For this reason, mail is riskier than electronic payment methods, which are recorded when ready.
You can track whether your payment has been received by logging into your New Jersey tax account online or by calling the Department of the Treasury. They can tell you the date your payment was posted to your account.
When to choose mail payment over other methods
Mail payment is slower and less certain than paying online or by phone, so most people use electronic methods when they can. However, mail payment makes sense if you do not have internet access, do not have a bank account set up for electronic payments, or prefer to keep a paper record of your payment.
If you are mailing your entire tax return along with your payment, mail is your only option for that return — you cannot file and pay electronically at the same time through the mail. In that case, make sure to mail early enough that both your return and payment arrive well before the important date.
If you have a choice between mail and electronic payment, electronic payment is faster and safer because the state records it when ready. You receive confirmation right away, and there is no risk of your payment being lost in the mail.
What happens if your payment gets lost in the mail
If you mailed a check or money order and the state never received it, you will owe a late penalty when you check your account. To resolve this, contact the New Jersey Department of the Treasury with the date you mailed your payment, the amount, and the check number if you used a check.
The state may ask you to stop payment on the original check through your bank and send a new payment. Keep a copy of your cancelled check or money order receipt as proof that you paid. If you used a check, your bank statement will show when the check cleared, which helps prove you sent the payment on time.
To avoid this problem, consider using electronic payment instead. Online and phone payments are recorded when ready, so you know right away whether the state received your money.
Alternatives to mail payment
The New Jersey Department of the Treasury offers faster payment methods that do not require mailing. You can pay online through the state's website using a bank account or debit card. Online payment is recorded when ready, and you receive a confirmation number right away.
You can also pay by phone by calling the New Jersey Department of the Treasury at 609-292-6400. Phone payment works the same way as online payment — the state records it when ready and gives you a confirmation number. Both methods charge a small fee if you use a credit card, but bank account payments are usually free.
If you are filing your return electronically, you can authorize the state to withdraw your payment directly from your bank account on the date you choose. This method is free and eliminates the risk of late payment.
Frequently Asked Questions
What if I mail my payment after the tax important date?
You will owe a late penalty on the unpaid balance. The state calculates penalties based on the date it receives your payment, not the postmark date. If you realize you will miss the important date, pay electronically instead — it is recorded when ready and may save you a penalty if you pay before midnight on the important date date.
Can I mail a credit card payment?
No. The state only accepts checks and money orders by mail. Credit card payments must be made online or by phone through the New Jersey Department of the Treasury.
Do I need to include my tax return with my payment?
Only if you are filing your return by mail. If you filed electronically, send only your payment to the address for payments. Including your return with a payment-only submission may delay processing.
How do I know if the state received my mailed payment?
Log into your New Jersey tax account online or call the Department of the Treasury at 609-292-6400. They can tell you the date your payment was posted and the amount received. Allow at least two weeks after mailing before checking.
What if I send too much money by mail?
The state will hold the overpayment on your account and explore it to future tax bills, or you can request a refund. Include a note with your payment if you want a refund instead of a credit, and the state will process it when your payment is received.