To sign up for Square’s online payroll services in Idaho, you must be registered with the Idaho State Tax Commission and Idaho Department of Labor so we can pay and file your state taxes.

Agency Require Tax Information Format
Idaho State Tax Commission Idaho Withholding Account Number XXXXXXXXX (9 digits)
Idaho Account Filing Cycle Semi-Monthly, Monthly, Quarterly, or Annually
Idaho Department of Labor Idaho UI Account Number XXXXXXXXXX (10 digits)
Idaho Contribution Rate X.XXXXX%
Workforce Development Fund Rate X.XXXXX%
Special Administrative Reserve Rate X.XXXXX%

Idaho New Employer Registration

Idaho Withholding Account Number & Account Filing Cycle

  1. Register online as a new business.
  2. You will receive your Withholding Account Number and Filing Cycle within 10 days from the Idaho State Tax Commission.

Idaho UI Account Number

  1. Register online as a new business.
  2. You will receive your UI Account Number within 10 days from the Department of Labor.

Idaho Tax Rates

Most new employers are assigned a total tax rate of 1.395%. This breaks down to a Contribution Rate of 1.35315%, a Workforce Development Fund Rate of 0.04185%, and a Special Administrative Reserve Rate of 0%.

For more information, contact the agency at (208) 332-3576.

Find Your Idaho Tax ID Numbers and Rates

Idaho Withholding Account Number

  • You can find your Withholding Account Number on any mail you have received from the Idaho State Tax Commission.
  • If you’re unsure, contact the agency at (208) 334-7660.

Idaho Account Filing Cycle

  • You can find your Account Filing Cycle on the notice you received when you registered with the Idaho State Tax Commission for the first time.
  • If you are unable to locate this, contact the agency at (208) 334-7660.

Idaho UI Account Number

  • You can find your UI Account Number on the Notice of Taxable Wage Rate you received from the Idaho Department of Labor.
  • If you are unable to locate this, contact the agency at (208) 332-3576.

Idaho Tax Rates

  • You can find your Contribution Rate, Workforce Development Fund Rate, and Special Administrative Reserve Rate on the Notice of Taxable Wage Rate you received from the Idaho Department of Labor.
  • If you’re unable to locate this, contact the agency at (208) 332-3576.

Idaho Payroll Tax Details

Square Payroll processes the following per the frequency below to the listed state agencies:

Agency Filing Frequency
Idaho State Tax Commission Withholding Tax Payment (Form 910) Per Pay Run
Annual Withholding Tax Filing (Form 967) Annual
W-2 Reporting Annual
Idaho Department of Labor Unemployment Insurance Tax Payment / Filing (TAX020/TAX026) Quarterly
New Hire Reporting Per New Employee

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