Idaho
Last Updated June 17, 2026.
Idaho businesses must establish payroll tax accounts and comply with state withholding and unemployment requirements. Use these resources to access registration links and payroll compliance information.
State Tax Guidelines
Idaho State Tax Commission – Withholding Tax
Agency Information
Add to existing company setup
Submit a request to your service team to add ID (withholding) to your company setup. Please include the below with your request:
- Withholding – Withholding account number and Deposit Frequency. If you’re unsure of your deposit frequency or account number you can call the agency at 208-334-7660.
- Power of Attorney- POA is required, please obtain the prefilled form from your client service representative.
Register a new company
Idaho Department of Labor – Unemployment tax
Agency Information
Add to existing company setup
Submit a request to your service team to add IDSUI (unemployment) to your company setup. Please include the below with your request:
- Unemployment – Account Number and Tax rate. This can be found on a Tax Rate Notice or the Quarterly contribution report. If you’re unsure of your tax rate or account number, you can call the agency at 205-332-3570.
- Third Party Access – TPA Access is required, please obtain the instructions from your service team.
Register a new company
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