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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 is a trailing letter on your number, you can omit this when entering it in your Gusto account.

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. This tax can range from 0.269%–5.4%, and it has a wage base of $38,200 in 2018. 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 0.00807% - 0.1116%.

Administrative reserve rate

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