Register in Idaho

Idaho tax agencies

  • Idaho State Tax Commission - income tax withholding
  • Idaho Department of Labor - unemployment tax

Set up an existing company

Businesses that have run payroll in Idaho previously can find their Withholding Account Number on the Withholding Payment Voucher (Form 910) or on notices received from the Idaho State Tax Commission. If you're unsure of your number, please call the agency at (800) 972-7660. If there is a trailing letter on your number, you can omit this when entering it in your Gusto account.

You can find your Unemployment Account Number on the Notice of Tax Rate or other notices received from the Idaho Department Labor. You can also call the agency at (208) 332-3576 to inquire.

UI Contribution Rate: Your Idaho UI Contribution Rate appears on the Notice of Tax Rate form that you receive from the Idaho Department of Labor. When completing this section, please exclude the Administrative Reserve Rate and the Workforce Development Rate from this field. This tax can range from 0.399%–5.4%, and it has a wage base of $37,800. If you’re unsure, verify your rate by calling the agency at (208) 332-3576.

Workforce Development Rate: This is a component of the overall UI Tax rate and appears on the Notice of Tax Rate form that you receive from the Idaho Dept. of Labor. If you’re unsure of your rate, verify it by calling the agency at (208) 332-3576. This tax can range from 0.0% - 0.12681%.

Administrative Reserve Rate: This is a component of the overall UI Tax rate and appears on the Notice of Tax Rate form that you receive from the Idaho Dept. of Labor. If you’re unsure of your rate, verify it by calling the agency at (208) 332-3576. This tax can range from 0.0% - 0.71859%

Register a new company

Income tax withholding

Register online with the Idaho State Tax CommissionYou should receive your account number and deposit schedule in about 10 days. Please keep this time frame in mind when planning your first Idaho payroll. If you have any questions about the application call the agency at (800) 972-7660.

Unemployment tax

Most companies are liable for state unemployment if they pay at least $1500 in wages in a calendar quarter or have one employee for some part of a week in 20 different weeks during a calendar year. You can check your liability and register online with the Idaho Department of Labor. You should receive your account number and UI contribution rate in about 10 days. The rate for new employers is generally 1.35315% with a wage base of $37,800. 

The Idaho Administrative Reserve Rate is a part of the overall UI Tax rate and appears on the Notice of Tax Rate form that employers receive from the Idaho Department of Labor. New employers in Idaho will receive their Administrative Reserve Rate once they have registered with the Idaho Department of Labor. The rate for new employers is generally 0%.

The Idaho Workforce Development Rate is a part of the overall UI Tax Rate and appears on the Notice of Tax Rate form that you receive from the Idaho Department of Labor. New employers in Idaho will receive their Workforce rate once they have registered with the Idaho Department of Labor. The rate for new employers is generally .04185%.

If you have any questions about your account number or rates call the agency at (208) 332-3576.

TAP Account

In order for us to file and pay your Idaho taxes, please create an online account with TAP:

  1. Navigate to the Idaho State Tax Commission TAP website here
  2. Under "Sign Up for Online Access", click Sign Up

  3. Enter your registration information and click Submit

Once you've registered with TAP, log into your Gusto account and select Yes, I have a TAP account in the Idaho Tax Setup. We will then configure your account so that we can start filing to Idaho on your behalf.

Troubleshoot State Tax Commission authorization issues

Some agencies require special authorization for Gusto to pay or file your taxes.

To ensure successful authorization of Gusto, please verify that the following information you have entered into Gusto matches what is on file with the Idaho State Tax Commission:

  • Official company name/address
  • FEIN - Federal Employment Identification Number
  • Withholding Tax Account ID

If Gusto is having trouble gaining access to your account, please verify that the above information matches exactly what the agency has on file by giving them a call at (208) 334-7660.

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