Employers in Montana must comply with these state rules relating to payroll tax reporting and filing information returns.
Statements to Employees: Federal Form W-2, by January 31 or within 30 days of termination of employment
Information Returns: Form 1099 for each individual who is paid $600 or more and such payments are not subject to withholding; Form 1099 of any type, or any other informational return, if required to be filed with the IRS.