Apply for Montana Tax ID Numbers

• 1). Withholding Montana state income tax for employees requires a state permit and special tax identification number. If your business pays employees, you must register for Montana state income tax withholding. Download a form known as "GenReg" online. Contact the Montana Department of Revenue at 866-859-2254 or 406-444-6900 with questions.
  
  
• 2). Collecting state taxes on money paid for lodging and rental vehicles also requires a state permit and tax identification number. Call the Montana Department of Revenue at 866-859-2254 or 406-444-6900 to find out if your business must collect these taxes. If so, file the same "GenReg" form used for withholding tax applications.
  
  
• 3). Montana employers must pay a payroll tax to support the state's unemployment insurance program. Download an application form (form UI-1), along with a host of reporting forms and instructions. Questions? Contact the Montana Department of Labor and Industry at 406-444-3834.
  
  
• 4). Workers' compensation insurance is technically not a tax, but it might feel like one. Most Montana businesses are required to provide workers' compensation insurance for their employees. Exceptions include some independent contractors and corporate officers. Call the Montana Workers' Compensation Regulation Bureau at 406-444-6541 with questions. Download forms at erd.dli.mt.gov/wcregs/forms.asp.