New Company Registration for Montana

Disclaimer: This article is not intended to be tax, legal, financial, or HR advice. Rules and regulations change over time and can vary by location. Consult with a lawyer, accountant, Tax, or HR expert for specific guidance.

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Register for Taxes with Middesk

Homebase has partnered with Middesk to make tax registration easier for you.

• Middesk can register you across all 50 states for withholdings/income tax (SIT) and unemployment insurance (SUI)
• Middesk will continue to support your ongoing compliance by processing and surfacing your state mail for your review
• Middesk offers registrations for select PFMLs and local jurisdictions as well

To get started, sign up here and check out this tutorial.

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State Withholding Income Tax

Tax Agency: Montana Department of Revenue

Obtaining an Account ID with Montana TAP

1. • Go to Montana.gov Transaction Portal (TAP)
   • Select Register a New Tax Account
   • Select register and review all information necessary to register
   • Complete remaining registration steps
   • Print confirmation page
   • You will receive a letter from the department of revenue which will have your Account ID in the upper right hand corner.

Creating an Online Account for Montana TAP

1. After you have received your letter with your Montana Account ID
2. Go to Montana.gov Transaction Portal (TAP)
3. Go to New user.  Set up online access
4. Select “my business account”
5. Enter Account ID from letter or contact the agency (406) 444-6900. You will need to verify your identity by answering a few questions
6. Create a username and password a

Important to Note

• You can find your Montana Account ID on any correspondence that you've received from Montana DOR.  Update your Homebase account with your Account ID. Your account ID is required for all Montana Department of Revenue interactions to ensure your account is accurate.
• If you have any questions regarding this process, contact agency at (406) 444-6900.

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Unemployment Insurance Tax (UI)

Tax Agency: Montana Department of Labor & Industry

Obtaining a Montana UI Employer Account Number (EAN)

1. Go to UIServices for Employers
2. Select register a new UI Account
3. Review information required to register and click next        
4. Select Employer and click next
5. Complete remaining registration steps

Requesting a User ID and Password

1. Select “sign up here” under log in
2. Select “employer” and your business role
3. Enter your FEIN and your Montana UI employer account number
4. Create a username, password

Important to Note

• Update your Homebase account with your Montana UI Employer Account Number (EAN). Your employer account number is required for all Montana unemployment interactions to ensure your account is accurate.

Granting Third Party Authorization

• Third Party Authorization Form must be completed in order for Check to file and pay on your behalf.  This form will be available during the onboard process. 
• Homebase uses a payroll partner, Check for backend payroll processing.