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Find your Idaho tax account info

Income tax withholding

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's a trailing number or letter on your number after a dash or hyphen (usually a '-W' or an '-09'), you can omit this when entering it in your Gusto account. 

  • Do include or add enough leading zeros when entering your account number in Gusto so that your number is nine digits long.
    • Example: If the state notice says '123456,' please enter '000123456.' Add enough leading zeros to create a nine digit account number.

Unemployment tax

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.

Unemployment 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. Click here to view state-by-state UI rates and wage bases. 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%-0.07023%.

Administrative reserve rate

Beginning in 2018, the Administrative Reserve fund tax is not in effect.

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