- March 16
- September 15
- Return Forms:
- Payment Vouchers:
- Online Filing Options:
A partnership is the relationship between two or more people who carry on a trade or business. Each partner contributes money, property, labor or skill, and expects to share in the business’s profits or losses.
Beginning with Tax Year 2019, partnerships in Montana must file an annual Montana Pass-Through Entity Tax Return (Form PTE).
Prior to Tax Year 2019, partnerships in Montana filed the Montana Partnership Information and Composite Tax Return (Form PR-1)
Annual Return Due Dates and Extensions
Montana partnership returns are due at the same time as the federal Form 1065, U.S. Return of Partnership Income:
- Calendar Year
- March 15
- Fiscal Year
- The 15th day of the third month following the close of the partnership's tax year.
Example: If your partnership's tax year ends on March 31, your return is due on June 15.
If a due date falls on a weekend or holiday, it is due on the next business day.
Montana grants all partnerships an automatic six-month extension to file a return. This means returns filed on extension are due:
- Calendar year
- September 15
- Fiscal year
- On the 15th of the ninth month following the fiscal year end.
Example: If your partnership’s tax year ends on March 31, your extension is due on December 15.
Publicly Traded Partnerships
Publicly traded partnerships do not need to include owners in a composite income tax return or pay tax on their behalf.
To qualify, a partnership needs to be defined as a publicly traded partnership under section 7704(b) of the Internal Revenue code.
Publicly traded partnerships need to send an approved electronic file with each qualified partner’s:
- Taxpayer identification number
- Share of Montana source income
A qualified partner:
- Had an interest in the partnership resulting in Montana source income during the year, or
- Sold an interest in the partnership during the current year
The file is due by the due date of the Publicly Traded Partnership’s return and must be in an electronic format that is exportable and sortable on a compact disc or flash drive. Label the disc or flash drive with the entity’s name and Federal Employer ID Number and include contact information for a company representative.
If the file is password protected, send the password in a separate envelope to the same address. The password must also be labeled with the entity’s Name and Federal Employer ID number and include contact information for a company representative.