Service of process in Montana
In Montana, service of process under Rule 4(d)(2) may be made by a sheriff, deputy sheriff, constable, or any other person over 18 who is not a party. A plaintiff must complete service within three years of filing the complaint or the court must dismiss without prejudice (Rule 4(t)). Montana does not issue an occupational license, but a person doing more than 10 services per year must obtain a registration certificate (with bond and exam); Montana has adopted the UIDDA by court rule.
ProcessServerState provides procedural-information-only summaries of state process-server rules. This is not legal advice. Service of process is a critical step in litigation — if you fail to serve correctly, your case can be dismissed. For complex or contested matters, consult a licensed attorney or a court self-help center. Not affiliated with any court or sheriff's office.
Is a license required in Montana?
Authority: Montana process-server registration (registration certificate; surety bond and written exam required)
Montana has no occupational 'license,' but anyone who performs more than 10 services of process in a calendar year must obtain a process-server registration certificate (with a surety bond and a written exam) to act as a levying officer. Occasional servers under the threshold need not register.
Who may serve process in Montana?
- County sheriff
- Any non-party adult (18+)
- Licensed / registered process server
- Certified / registered mail
- Publication (by court order)
Service deadline (Montana)
Mont. R. Civ. P. 4(t)(1): a plaintiff must accomplish service within three years (1,095 days) after filing the complaint, or the court must dismiss without prejudice as to any defendant who has not appeared.
UIDDA: Montana has adopted the Uniform Interstate Depositions and Discovery Act for interstate service.
Sheriff / Marshal civil-process route
Civil-process fees are set by each county and listed on the local sheriff's civil-process page. Not all counties publish a fee schedule — confirm with the county where service will be made.
Statute / Rule citation
Mont. R. Civ. P. 4 (Title 25, ch. 20, MCA)
UIDDA: Mont. R. Civ. P. 28(c) (UIDDA), eff. Oct. 1, 2011
Interstate service from Montana
Montana has adopted the Uniform Interstate Depositions and Discovery Act (UIDDA), which provides a streamlined process for issuing an out-of-state subpoena based on one issued in the trial state. Service of an initial summons across state lines follows the receiving state's rules.
Sources for Montana
Other states with licensing requirements
Check a different state
Verified against Montana primary sources on June 16, 2026. Read how we verify on our methodology page, or browse every citation in the source manifest.
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ProcessServerState provides procedural-information-only summaries of state process-server rules. This is not legal advice. Service of process is a critical step in litigation — if you fail to serve correctly, your case can be dismissed. For complex or contested matters, consult a licensed attorney or a court self-help center. Not affiliated with any court or sheriff's office.