New Hampshire Payroll Tax Registration

May 29, 2025

If you are an employer in New Hampshire who has recently hired an employee, you will need to register for payroll taxes with the state. Payroll tax registration is a necessary step to ensure compliance with state regulations and to properly withhold and remit taxes on behalf of your employees.

How New Hampshire Payroll Registration Works

There is one payroll tax setup task you may need to complete in New Hampshire to get your new hire on payroll for the first time. You can follow the guide below to help you get registered directly with the New Hampshire agencies or use Mosey to do it.

New Hampshire Unemployment Insurance Setup for LLC, Corporation, LLP

Employers with New Hampshire employees must register with the New Hampshire Unemployment Compensation Program if they pay wages of $1,500 or more within any calendar quarter or have at least one employee working for some part of the day in each of 20 different weeks within a calendar year. You will not be allowed to register more than 30 days in advance of your employee's first date of employment. Note: 501(c)(3) tax-exempt organizations will have the choice to either pay unemployment contributions on taxable wages each quarter or elect to reimburse the New Hampshire Employment Security Trust Fund for benefits paid to terminated employees.

  1. Register for a New Hampshire Unemployment Compensation Account

    Register online for a New Hampshire Unemployment Compensation Account. After you have completed the online registration you will be given a confirmation number. A Determination of Liability will then be mailed if applicable within seven to 10 days with your state account number.

  2. File Letter of Choice Form (Nonprofits Only)

    As a 501(c)(3) nonprofit, the New Hampshire Employment Security will mail your Determination of Liability packet with a blank Letter of Choice form. You must complete this form to elect the organization's preferred payment method for unemployment and mail it back to the agency within 30 days.

  3. Configure Payroll with Your Unemployment Account Number

    Provide your Unemployment Account Number and your assigned Unemployment Tax rate (or reimbursable status) to your payroll provider.

New Hampshire's Payroll Registration Agencies

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