Idaho Payroll Tax Registration and Information for Justworks Payroll

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Paying employees in Idaho

When hiring employees in new states, you will need to register for relevant state tax accounts to facilitate their payment. In Idaho, you must be registered with the Idaho State Tax Commission (STC) (income tax withholding) and Idaho Department of Labor (DOL) (unemployment tax).

Alternatively, Justworks Payroll can handle the registration process for you. We offer state tax registration services to assist with registering your business in new states. To request registration, please contact us at support@payroll.justworks.com.

Your Idaho Accounts and Rate Info

Registering for a Withholding Tax Account (Permit Number):

To register:

1. Visit the Idaho State Tax Commission (STC) website.
2. Scroll down to the “New Businesses” section to see what you'll need for registration.
3. When ready, click on the "Idaho Business Registration (IBR) Application."
4. On the right side of the page, under the “Begin New Registration” section, click "Create a new account."
5. Complete the registration process.

If you register online, you should receive your withholding account number ("Permit Number") and tax deposit schedule within about 10 days.

Registering for an Unemployment Insurance Tax Account:

Register with the Idaho Department of Labor through Idaho's Business Registration system.

You can expect to receive your account number and unemployment (UI) contribution rate within approximately 10 days. If you have any questions, you can reach the agency directly at (208) 332-3576.

Already Registered? Locate This Information

Locate Your Withholding Tax Account Number:

If your business has previously processed payroll in Idaho, you can find your Withholding Account Number by:

• Checking your employer portal,
• Reviewing notices from the Idaho State Tax Commission, such as Form 910, “Withholding Payment Voucher,” or
• Contacting the agency at (800) 972-7660.

Locate Your Unemployment Tax Account Number and Contribution Rate:

You can locate your unemployment account number and contribution rate by:

• Accessing your employer portal,
• Reviewing notices from the Idaho Department of Labor, such as the "Notice of Tax Rate," or
• Contacting the agency at (208) 332-3576.

Entering State Tax Info in Justworks Payroll 

Once you registered with the State and have a valid ID address added to your company’s offices, you can add your account info in Justworks Payroll by navigating to: 

1. Company > Settings in the left navigation bar
2. Under ‘Company tax info’ click into “Idaho” to edit the state tax information 

In your Justworks Payroll account, you’ll want to enter your ID Withholding Tax Account Number (Permit Number), Unemployment Insurance Account Number and Tax Rate.

Third-party admin access 

As your payroll provider, Justworks Payroll will utilize the provided account information to manage and report your ID tax liabilities. Occasionally, the state may issue notices related to payroll taxes. 

Justworks Payroll can examine these notices if granted Third-party admin access to your ID state tax account. During onboarding, we will request that you sign state specific TPA forms, which authorizes us to handle and report your taxes to the state. 

Why is this important?

Justworks Payroll calculates tax liabilities as part of payroll processing. If we cannot access your ID state tax accounts, we must return any unremitted tax liabilities to your company bank account, requiring you to remit and file your company’s state taxes manually.

Disclaimer

This material has been prepared for informational purposes only, and is not intended to provide, and should not be relied on for, legal or tax advice. If you have any legal or tax questions regarding this content or related issues, then you should consult with your professional legal or tax advisor.