New Jersey EIN Number and Your 12-Digit NJ Tax ID

Last updated November 1, 2026 · Written by the EIN Registration filing team

There is no New Jersey EIN. The IRS issues it on Form SS-4. What New Jersey adds comes after it: income tax withholding with the New Jersey Division of Taxation, keyed to the EIN itself, an unemployment insurance account with the New Jersey Department of Labor and Workforce Development, and a Certificate of Authority for sales tax from the New Jersey Division of Taxation if you sell taxable goods or services.

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After your EIN in New Jersey

Account	Agency	Number you get	Register
State income tax withholding	New Jersey Division of Taxation	Your federal EIN (New Jersey Taxpayer Identification Number, your EIN plus a 3-digit suffix)	NJ-REG
Unemployment insurance	New Jersey Department of Labor and Workforce Development	Your federal EIN (the same 12-digit New Jersey Taxpayer Identification Number)	NJ-REG
Sales tax	New Jersey Division of Taxation	Certificate of Authority for sales tax	NJ-REG

Form NJ-REG, New Jersey's online tax and employer registration with the Division of Revenue and Enterprise Services, covers state tax accounts such as sales tax and income tax withholding, and the Department of Labor requires it before a business reports as an employer for unemployment, disability and family leave insurance.

New Jersey employers report state income tax withheld together with unemployment, disability and family leave insurance contributions on one quarterly return, Form NJ-927. It must be filed electronically every quarter, even if no tax was withheld, by the 30th day of the month after the quarter ends.

New Jersey and Pennsylvania have a reciprocal agreement. A New Jersey employer does not have to withhold New Jersey income tax from a Pennsylvania resident working in New Jersey who files Form NJ-165, the Employee's Certificate of Nonresidence, which the employer keeps on file.

Employers also withhold worker contributions for unemployment, disability and family leave insurance, and report them with state income tax withholding on Form NJ-927.

Also on the New Jersey list

Complete the separate business registration, Form NJ-REG, online with the Division of Revenue and Enterprise Services. It requires the EIN and produces the Business Registration Certificate that New Jersey public agencies and many private customers demand before paying an invoice.
File the annual report online by the last day of the LLC's anniversary month each year; New Jersey does not accept it on paper.

Agency sites checked November 1, 2026 · All 50 states

What is different about New Jersey

New Jersey splits formation into two filings with the same Division: the certificate of formation, which creates the LLC, and the business registration, NJ-REG, which registers it for taxes. The second one cannot be done without the federal EIN, and it is the one that issues the Business Registration Certificate contractors and public bodies ask for.
New Jersey assigns a ten-digit Entity ID at formation, printed on the filed certificate. Every later filing, including the annual report and the NJ-REG registration, asks for it, and it is the number owners most often cannot find when the first annual report comes due.
New Jersey's LLC annual report is due by the end of the anniversary month and can only be filed online. There is no paper form, so an owner waiting for a mailed notice with a form attached is waiting for something the state does not send.

Before you apply

The SS-4 must match the New Jersey Division of Revenue and Enterprise Services filing; its Entity ID is a state index, not a tax ID.

New Jersey EIN questions

How do I get an EIN number in New Jersey?

File IRS Form SS-4 after the New Jersey Division of Revenue and Enterprise Services approves any formation filing; there is no New Jersey EIN application. Form NJ-REG, New Jersey's online tax and employer registration with the Division of Revenue and Enterprise Services, covers state tax accounts such as sales tax and income tax withholding, and the Department of Labor requires it before a business reports as an employer for unemployment, disability and family leave insurance.

Does New Jersey give employers a separate withholding number?

No. The New Jersey Division of Taxation identifies withholding accounts by the federal EIN (the New Jersey Taxpayer Identification Number, your EIN plus a 3-digit suffix), so the account you open in NJ-REG is keyed to the nine digits the IRS issued. That makes the EIN the thing to have before the first New Jersey payroll.

Where do I register for New Jersey unemployment insurance?

With the New Jersey Department of Labor and Workforce Development, online through NJ-REG. It uses the same 12-digit New Jersey Taxpayer Identification Number as the account number, so there is no separate unemployment number.

Do I need a New Jersey Certificate of Authority for sales tax?

Only if you sell what New Jersey taxes. The New Jersey Division of Taxation issues it through NJ-REG, and your returns are filed under its number, not the EIN.

Is the New Jersey tax ID number the same as my EIN?

Almost. New Jersey's tax identification number is twelve digits: your nine-digit federal EIN followed by a three-digit suffix, usually 000. So the state number cannot exist until the IRS has issued the EIN. The ten-digit Entity ID on your certificate of formation is a different number again; it identifies the company in state records and is not a tax ID.

What is a New Jersey Business Registration Certificate?

It is the proof that a business has registered for New Jersey taxes, issued by the Division of Revenue and Enterprise Services after you file Form NJ-REG online. Government bodies in New Jersey generally require it before they contract with or pay a business, and many companies ask contractors for it too. NJ-REG asks for the federal EIN, so the EIN has to come first.

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Sources

You can also apply for an EIN directly with the IRS at irs.gov at no cost.