S corporations and partnerships use the Montana Pass-Through Entity Tax Return to file their annual returns.
If you are filing an S corporation or Partnership Return for a year prior to 2019, you will need to use:
December 11, 2024
S corporations and partnerships use the Montana Pass-Through Entity Tax Return to file their annual returns.
If you are filing an S corporation or Partnership Return for a year prior to 2019, you will need to use: