Wisconsin Security Deposit Law (2026): Deadlines, Interest & Penalties
Under Wis. Stat. § 704.28; ATCP 134.06, a Wisconsin landlord must return a tenant's security deposit within 21 days of move-out and is not required to pay interest on the deposit. Fail to comply, and the tenant may recover 2x wrongfully withheld + attorney fees (ATCP 134 double damages). Plug your lease dates and deposit amount into the calculator above for a statute-based breakdown.
Enter Rent Details
Calculation Results
Select your state and fill out the form parameters to calculate interest and deadline penalties.
Wisconsin Deposit Rules at a Glance
| Return deadline | 21 days after move-out Standard deadline applies. |
|---|---|
| Interest on deposit | Not required |
| Separate account required | No |
| Deposit limit | No limit |
| Penalty for violations | 2x wrongfully withheld + attorney fees (ATCP 134 double damages) Attorney fees / court costs may also be recoverable |
Wisconsin Security Deposit FAQ
How long does a landlord have to return a security deposit in Wisconsin?
In Wisconsin, a landlord must return the security deposit within 21 days after the tenancy ends, under Wis. Stat. § 704.28; ATCP 134.06. Note: Standard deadline applies..
Does my landlord owe me interest on my security deposit in Wisconsin?
No. Wisconsin law does not require landlords to pay interest on residential security deposits.
What is the penalty if a landlord misses the deposit deadline in Wisconsin?
2x wrongfully withheld + attorney fees (ATCP 134 double damages). The tenant may also be able to recover attorney fees or court costs. The governing statute is Wis. Stat. § 704.28; ATCP 134.06.
Is there a limit on how much a landlord can charge as a security deposit in Wisconsin?
Yes. In Wisconsin, the security deposit is limited to No limit.
Does a Wisconsin landlord have to keep my deposit in a separate account?
No. Wisconsin law does not require landlords to hold security deposits in a separate or escrow account.
Are there exceptions to the 21-day deposit deadline in Wisconsin?
Yes — the deadline can vary: Standard deadline applies.. When in doubt, check the statute itself (Wis. Stat. § 704.28; ATCP 134.06) or ask a local tenant-rights organization.
What can I do if my landlord won't return my deposit in Wisconsin?
First, send a written demand letter citing Wis. Stat. § 704.28; ATCP 134.06 — our free generator creates one with your amounts filled in. If the landlord still doesn't pay, you can usually file in small claims court, where the penalty exposure is 2x wrongfully withheld + attorney fees (atcp 134 double damages).