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WI · SERVICE-AGMT · Updated July 2026 · Free

Wisconsin Service Agreement

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Wisconsin at a glance: Default Interest: 5% per year (Wis. Stat. § 138.04) · Governing Law: Wisconsin Statutes Chapter 138

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Overview

Service Agreements in Wisconsin

Wisconsin service agreements are governed by Chapter 138 of the Wisconsin Statutes. Late fees must comply with the 5% statutory cap unless written (Wis. Stat. § 138.04).
Key Facts

Wisconsin Service Agreement — Quick Reference

RequirementWisconsin Rule
Default Interest5% per year (Wis. Stat. § 138.04)
Governing LawWisconsin Statutes Chapter 138
Legal Requirements

Wisconsin Legal Requirements

  • Late fees exceeding 5% per year must be in writing to be enforceable.
Governing Laws

Wisconsin Governing Laws

Wis. Stat. § 138.04
Legal Rate of Interest
Defines contract default interest rates.

Read the full text of these laws at Cornell Law School's Wisconsin legal resources or your state legislature's official website.

Questions & Answers

Wisconsin Service Agreement — Frequently Asked Questions

What is the default contract interest rate in Wisconsin?

The default rate is 5% per annum.