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New Hampshire payroll tax and registration guide

  • Updated

Why is this important?

To maintain compliance with state payroll tax regulations, you must provide the following information before you can use OnPay to run payroll:

  • State Employer Identification Number and state/local tax IDs
  • Tax rates - State tax offices set these rates based on the type, age, and size of your business
  • TPA and power of attorney - Most tax offices require this before we can submit quarterly wage reports and deposits on your behalf

This information must be provided and maintained by you in order for OnPay to accurately file and deposit tax payments for your company. OnPay is not responsible for any penalties or interest that incur due to missing or incorrect company tax information.

Each state has its own requirements, so if you pay employees in more than one state, you’ll find separate tax guides for each state.

Let Middesk handle your state tax registrations

Want help registering your business with state agencies? We've partnered with Middesk to make it simple for you to stay compliant in your state — and every state — when hiring employees.

  • Register with state agencies and get the tax IDs you need within minutes
  • Manage all your government accounts in one place using Middesk's intuitive platform
  • Stay compliant by managing agency mail and notices from your Middesk dashboard
  • Foreign Qualify with the Secretary of State to create payroll tax accounts 

Learn more about Middesk

 

See what information you need to provide OnPay, and what taxes and filings OnPay handles for New Hampshire Employers.

  • Information OnPay needs from you

    Use this checklist to make sure you’ve covered everything required to set up your account as a New Hampshire employer, so OnPay can accurately file and pay taxes on your behalf:

    All New Hampshire employers What is this?
    Make sure your business is registered with the New Hampshire Department of Labor

    Allows your business to pay required unemployment insurance in New Hampshire
    More info >
    Provide OnPay with your New Hampshire Unemployment ID

    A 9-digit number unique to your account with the New Hampshire Department of Labor
    More info >
    Provide OnPay with your New Hampshire Unemployment (SUI) Rate

    A tax rate you receive annually from the New Hampshire Department of Labor
    More info >
    Provide OnPay with a signed Power of Attorney (POA)

    Allows OnPay to pay taxes and file required payroll tax forms in New Hampshire for your business.
    More info >

  • Taxes and filings OnPay handles for New Hampshire Employers

    Withholding Tax

    There is no state income tax in New Hampshire.

    Unemployment Insurance Tax

    Form 21 (Filing)

    New Hampshire Quarterly Tax and Wage Report

    - Quarterly

    Other

    New Hire Report

    New Hampshire Report of New Hires

    - As required

Where you can find the tax account numbers you need

If you are an existing employer who has previously run payroll in New Hampshire, you likely already have the IDs and online accounts needed for OnPay to process your tax filings. 

If you are a new employer in New Hampshire, you will need to register your business with the New Hampshire Department of Labor and the New Hampshire Department of Labor. This must be completed for OnPay to be able to file and pay your New Hampshire taxes.

 

Unemployment Account Number and Tax Rate

Updated January 1, 2025

Existing New Hampshire Employer: 

  • Existing employers can find the Unemployment Tax ID on past returns or other correspondence you’ve received from the New Hampshire Employment Security.
  • If you cannot locate a form or return with that ID, or locate and verify your tax rate, please give the New Hampshire Employment Security a call at 603-228-4048.
  • Employer contribution rates range from 0.1% to 7% for SUTA, with a wage base of $14,000.

New New Hampshire Employer: Register with the New Hampshire Department of Labor 

  • You can register your business with the New Hampshire Department of Employment Security.
  • The New Hampshire starter rate for new employers is 2.7% for SUTA, with a wage base of $14,000.
  • If you cannot locate a form or return with that ID, or locate and verify your tax rate, please give the New Hampshire Employment Security a call at 603-228-4048.

 

Paying employees in other states?

If you operate in multiple states or just have employees working from home across a state line, it's important to file the correct state forms for those workers. See what forms we file in the states where you pay employees.

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