Montana Commissioner of Political Practices: Duties, Filings, and Penalties

The Montana Commissioner of Political Practices (COPP) is the independent state office that enforces Montana’s campaign finance, lobbying, and government ethics laws. If you are running for any public office in the state, lobbying the legislature, working for a principal that hires lobbyists, or trying to hold a public official accountable, this is the agency whose rules and complaint procedures you need to know. The office covers everything from governor’s races down to school board campaigns, and its reach extends to paid lobbyists, their employers, and state officers and employees.

What the Office Oversees

The Commissioner’s authority sits in three separate chapters of the Montana Code, and each one works differently.

Campaign finance is governed by Title 13, Chapter 37. The Commissioner investigates alleged violations of election law, monitors how candidates and political committees raise and spend money, and enforces reporting requirements across state races, county offices, municipal elections, and school board campaigns.¹ The office can also open investigations on its own when filed statements look incomplete or falsified.²

Lobbying is governed by Title 5, Chapter 7. The Commissioner licenses paid lobbyists, oversees the organizations (“principals”) that hire them, and enforces the cooling-off period on former officials.³

Government ethics is governed by Title 2, Chapter 2. The Code of Ethics prohibits public servants from using their positions for private financial gain and bars conflicts of interest. One jurisdictional boundary matters here: complaints against local government officials typically go through the local county attorney rather than the Commissioner.⁴

Rules for Candidates

Contribution Limits for 2026–2027

Montana caps what any individual or political committee can give a candidate per election. For the 2026–2027 cycle:

Governor and lieutenant governor (filed jointly): $1,190 per election
Other statewide offices — attorney general, secretary of state, auditor, superintendent of public instruction, supreme court justice, clerk of the supreme court: $830 per election
All other public offices, including state senate, state house, public service commission, district judge, county, city, and school board: $470 per election

“Per election” counts the primary and the general separately, so a donor can give the full amount for each.⁵

Anonymous contributions are flatly prohibited. It is illegal to knowingly make or receive one. The disclaimer requirement for a committee claiming an exemption kicks in at $35 per contributor.

Registering as a Candidate

Before raising or spending a dollar, every candidate must file a Statement of Candidate with the COPP. Statewide and state-district candidates (house, senate, public service commission, district judges) file Form C-1. Local candidates — county, municipal, and school — file Form C-1A.⁶ Both forms require you to name a campaign treasurer and identify the financial institution holding the campaign account.

The C-5 Report and 2026 Deadlines

The C-5 Campaign Finance Report is the main disclosure document. Every contributor who gives $35 or more in the aggregate during a reporting period must be listed by full name, mailing address, occupation, and employer. Contributions under $35 are reported only as a lump total. Expenditures require the date, amount, and specific purpose of each payment.⁷

During an election year, filings are roughly monthly. For the 2026 candidate cycle, C-5 deadlines fall on the 20th of each month from March through November, with each report covering the prior month’s activity. The March 20 report covers January 1 through March 15; the October 20 report covers September 15 through October 14.⁸

Large late-cycle activity gets rapid treatment. Between May 15 and the day before the primary, and again between October 15 and the day before the general, any single-source contribution or expenditure that equals or exceeds the applicable contribution limit must be reported on a C-7 or C-7E form within two business days.⁸ The two-business-day window is where campaigns most often miss a deadline.

All campaign finance and lobbying disclosures are submitted through the Campaign Electronic Reporting System (CERS), the state’s online portal. Once a report is filed, it is uploaded to a public database searchable by anyone.

Rules for Lobbyists and Principals

Anyone who receives $3,000 or more in a calendar year (excluding reimbursements for personal living expenses) to promote, oppose, or influence legislation on someone’s behalf must register as a lobbyist with the COPP. You file Form L-1 within five business days of entering into a lobbying agreement or receiving the $3,000 in payments.⁹

Registration takes three pieces: the L-1 application, a $150 license fee, and a Principal Authorization Statement (Form L-2) from your principal. Either the lobbyist or the principal can pay the fee, and a hardship waiver exists.¹⁰

Principals carry their own reporting burden. Any principal who pays or agrees to pay more than $2,650 in a calendar year for lobbying must file a Principal Authorization Statement. Principals report all payments and expenditures supporting lobbying activity on L-5 Lobbying Financial Reports, including lobbyist compensation, support staff costs, travel, and the cost of entertainment events aimed at legislators. Late L-5 reports trigger a $50-per-day penalty on the principal.¹¹

The Two-Year Revolving Door Ban

Montana imposes a 24-month cooling-off period on former government officials who want to become lobbyists. If you served as a state legislator, elected state official, department director, appointed state official, or certain personal staff within the previous two years, you cannot obtain a lobbyist license, and no principal may authorize you to lobby on their behalf.¹²

The ban does not apply if you are lobbying as part of your duties as an employee of state or local government. A former legislator who takes a job with a state agency can still represent that agency’s interests at the capitol, but cannot register as a private lobbyist for an outside principal until the 24 months expire.¹²

How To File a Complaint

The requirements differ by type of complaint, and getting the details wrong will get it rejected.

Campaign finance. The Commissioner investigates on receipt of a written complaint from any individual. The statute (MCA § 13-37-111) requires a written complaint but does not specify notarization.² The Commissioner can also act independently when filed statements appear incomplete or falsified.

Ethics and lobbying. These complaints carry stricter formality. Under the COPP’s administrative rules, an ethics complaint must be in writing, sworn before a notary public, and delivered in person or by certified mail. It must include your full name, address, and phone number; the respondent’s identifying information; a statement of facts with relevant dates; and the specific provision of the ethics code allegedly violated.⁴ Lobbying complaints follow the same notarization and certified-mail requirements.¹³

Ethics complaints must be filed within two years of the alleged violation.⁴ Anonymous tips will not trigger a formal ethics or lobbying investigation because they lack the required notarized signature.

Penalties for Violations

When the Commissioner or a county attorney finds a campaign finance violation, the responsible person faces civil liability of up to $500 or three times the amount of the unlawful contribution or expenditure, whichever is greater. That penalty structure applies to reporting violations, illegal contributions and expenditures, and foreign-influence violations under the code.¹⁴

The treble-damages provision is where the real exposure lies. A candidate who illegally accepts $10,000 in contributions faces up to $30,000 in penalties, not $500. Cases can be pursued by the Commissioner or the county attorney, and if settlement fails, the matter proceeds to state district court.¹⁴

How the Commissioner Is Appointed and Removed

A four-member nomination committee — the speaker of the house, the president of the senate, and the minority leaders of both chambers — assembles a list of two to five candidates, with a majority of the four agreeing on each name. The governor picks from that list, and the state senate confirms.¹⁵

Once in office, the Commissioner can only be removed for incompetence, malfeasance, or neglect of duty. The governor’s removal decision must be in writing, and the stated reasons are subject to judicial review. That bipartisan nomination structure and the limited removal grounds are what keep the office independent from any single branch.¹⁵

1
Montana State Legislature. Montana Code Annotated 2025 – Title 13, Chapter 37, Control of Campaign Practices
2
Montana State Legislature. Montana Code 13-37-111 – Investigative Powers and Duties, Recusal
3
Montana Legislative Services Division. Montana Code Annotated 2025 – Title 5, Chapter 7, Lobbying
4
Commissioner of Political Practices. Montana Code of Ethics and Administrative Rules
5
Commissioner of Political Practices. State of Montana Political Campaign Contribution Limits Summary 2026-2027
6
Commissioner of Political Practices. Forms
7
Commissioner of Political Practices. Form C-5 Candidate Campaign Finance Report Instructions and Form
8
Campaign Electronic Reporting System. Campaign Electronic Reporting System
9
Commissioner of Political Practices. Commissioner of Political Practices Form L-1 Lobbyist License Application
10
Montana State Legislature. Montana Code 5-7-103 – Licenses, Fees, Eligibility, Waiver
11
Commissioner of Political Practices. Lobbying Guide for Principals and Lobbyists
12
Montana State Legislature. Montana Code 5-7-310 – Prohibition of Lobbying by Former Government Personnel
13
Commissioner of Political Practices. Lobbying Complaint Form
14
Montana Legislature. Montana Code 13-37-128 – Cause of Action Created
15
Montana Legislature. Montana Code 13-37-102 – Creation of Office, Nomination, Appointment, Removal