Service of process in Wisconsin
In Wisconsin, service of a summons is governed by statute (Wis. Stat. ch. 801) rather than a numbered 'Rule 4.' Personal service may be made by the sheriff or deputy, or by any adult who is not a party and who resides in Wisconsin (or in Illinois, Iowa, Michigan, or Minnesota). Where the defendant cannot be served personally with reasonable diligence, substituted service and — by court authorization — service by publication are allowed; the summons and complaint must be served within 90 days after filing.
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 Wisconsin?
No statewide license/registration. Server must be an adult not a party; must be a Wisconsin resident or a resident of IL, IA, MI, or MN. Sheriff/deputy may also serve.
Who may serve process in Wisconsin?
- County sheriff
- Any non-party adult (18+)
- Publication (by court order)
Service deadline (Wisconsin)
An authenticated copy of the summons and complaint must be served within 90 days after filing for the action to be deemed commenced (Wis. Stat. 801.02).
UIDDA: Wisconsin 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
Wis. Stat. 801.11 (manner of serving summons); 801.02 (commencement / timing)
UIDDA: Wis. Stat. 887.24 (repealed and recreated to adopt UIDDA, eff. Jan. 1, 2016)
Interstate service from Wisconsin
Wisconsin 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 Wisconsin
Other states with no license requirement
Check a different state
Verified against Wisconsin 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.