In Wisconsin, a landlord must return a tenant's security deposit within 21 days after the tenant moves out. This is according to Wisconsin Administrative Code ATCP 134.06(2). During this time, the landlord can withhold amounts from the security deposit for unpaid rent, unpaid utilities, or damages caused by the tenant that go beyond normal wear and tear.
The landlord is required to provide the tenant with an itemized list of any deductions made from the security deposit, along with the remaining balance, if applicable. If the landlord fails to return the security deposit or provide an itemized list of deductions within the 21-day period, the tenant may have the right to pursue legal action to recover the withheld amount.
Please note that this information is for general purposes only and should not be considered legal advice. To get legal advice tailored to your specific situation, consult with a licensed attorney in Wisconsin.