Idaho Payroll Tax and Registration Guide

Employers who pay employees in Idaho must register with the ID State Tax Commission for a Withholding Account Number and register with the ID Dept of Commerce and Labor for a UI Account Number.

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Account Number(s) Needed:

Employers who pay employees in Idaho must register with the ID State Tax Commission for a Withholding Account Number and register with the ID Dept of Commerce and Labor for a UI Account Number.

ID Tax Commission Withholding Account Number: 9999 99999 (9 digits)

  • Register online at the State Tax Commission’s Idaho Business Registration (IBR) portal to receive both Withholding and UI account numbers within 5 days of completing the application.
  • Find an existing Withholding Account Number:

ID Dept of Commerce and Labor UI Account Number: 9999999999 (10 digits)

  • Register online at the State Tax Commission’s Idaho Business Registration (IBR) portal to receive both Withholding and UI account numbers within 5 days of completing the application.
  • Find an existing UI Account Number:
    • on Form TAX020, Employer’s Quarterly UI Tax Report
    • by calling the Dept of Labor.

Required Payroll Documentation:

Withholding

  • Form 967 (Idaho Annual Withholding Report): This is the only filing requirement for withholding. Use a Payroll report that contains Employee SSN, Quarterly Wages Paid and Withheld Amounts

Unemployment

  • TX20 (Quarterly Contribution Report)and TX26 (Continuation Report): This return is a good source of information to use to balance employee gross wages paid and employer contributions made in prior quarters.

Third Party Access /POA Needed:

No

Local Income Taxes Imposed:  

No

State Resources

Visit state resources for specific tax rates and wage details:
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