Skip to content
DepositClaimNow

Wisconsin security deposit law: deadline, deductions and penalties

Quick answer

In Wisconsin, a landlord has 21 days to return the security deposit or send an itemized list of deductions (Wis. Admin. Code ATCP 134; Wis. Stat. § 100.20(5)). Under Wisconsin law, a landlord who wrongfully keeps a deposit can owe up to twice the amount withheld.

Checked against the statute on October 29, 2026.

21

days for a Wisconsin landlord to return the deposit or itemize deductions

The deadline

Within 21 days after the tenant surrenders the premises, the landlord must return the deposit or account in writing for every amount deducted.

What the landlord must send you

A written accounting of every amount withheld, sent to the tenant's last known address.

Penalty for wrongful withholding

A tenant may recover twice the amount of the loss, together with costs and reasonable attorney's fees (Wis. Stat. § 100.20(5); Wis. Admin. Code ATCP 134).

Read the law

Summary checked against the statute on October 29, 2026. Not legal advice; laws change, so confirm with the source before relying on it.

Free deposit check

Five quick answers. No sign-up. Takes about a minute.

Did the landlord send you a written, itemized list of deductions?

Wisconsin security deposit FAQ

How long does a landlord have to return a security deposit in Wisconsin?

Within 21 days after the tenant surrenders the premises, the landlord must return the deposit or account in writing for every amount deducted.

What must a Wisconsin landlord send when keeping part of the deposit?

A written accounting of every amount withheld, sent to the tenant's last known address.

What is the penalty for wrongfully keeping a security deposit in Wisconsin?

A tenant may recover twice the amount of the loss, together with costs and reasonable attorney's fees (Wis. Stat. § 100.20(5); Wis. Admin. Code ATCP 134).

How do I get my security deposit back in Wisconsin?

Give your landlord a forwarding address in writing, wait for the 21 days deadline, then send a demand letter by certified mail that cites Wis. Admin. Code ATCP 134; Wis. Stat. § 100.20(5) and sets a payment date. If the landlord still doesn't pay, you can file in small claims court in the county where the rental is located.

Related guides

Other states